Split out languages from compilers.py

16 files changed, 2623 insertions, 2166 deletions

diff --git a/mesonbuild/compilers/__init__.py b/mesonbuild/compilers/__init__.py
index 570c2af..f09f252 100644
--- a/mesonbuild/compilers/__init__.py
+++ b/mesonbuild/compilers/__init__.py
@@ -12,4 +12,150 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from .compilers import *
+# Public symbols for compilers sub-package when using 'from . import compilers'
+__all__ = [
+    'CLANG_OSX',
+    'CLANG_STANDARD',
+    'CLANG_WIN',
+    'GCC_CYGWIN',
+    'GCC_MINGW',
+    'GCC_OSX',
+    'GCC_STANDARD',
+    'ICC_OSX',
+    'ICC_STANDARD',
+    'ICC_WIN',
+
+    'base_options',
+    'clike_langs',
+    'c_suffixes',
+    'cpp_suffixes',
+    'get_base_compile_args',
+    'get_base_link_args',
+    'is_assembly',
+    'is_header',
+    'is_library',
+    'is_llvm_ir',
+    'is_object',
+    'is_source',
+    'lang_suffixes',
+    'sanitizer_compile_args',
+    'sort_clike',
+
+    'CCompiler',
+    'ClangCCompiler',
+    'ClangCompiler',
+    'ClangCPPCompiler',
+    'ClangObjCCompiler',
+    'ClangObjCPPCompiler',
+    'CompilerArgs',
+    'CPPCompiler',
+    'DCompiler',
+    'DmdDCompiler',
+    'FortranCompiler',
+    'G95FortranCompiler',
+    'GnuCCompiler',
+    'GnuCompiler',
+    'GnuCPPCompiler',
+    'GnuDCompiler',
+    'GnuFortranCompiler',
+    'GnuObjCCompiler',
+    'GnuObjCPPCompiler',
+    'IntelCompiler',
+    'IntelCCompiler',
+    'IntelCPPCompiler',
+    'IntelFortranCompiler',
+    'JavaCompiler',
+    'LLVMDCompiler',
+    'MonoCompiler',
+    'NAGFortranCompiler',
+    'ObjCCompiler',
+    'ObjCPPCompiler',
+    'Open64FortranCompiler',
+    'PathScaleFortranCompiler',
+    'PGIFortranCompiler',
+    'RustCompiler',
+    'SunFortranCompiler',
+    'SwiftCompiler',
+    'ValaCompiler',
+    'VisualStudioCCompiler',
+    'VisualStudioCPPCompiler',
+]
+
+# Bring symbols from each module into compilers sub-package namespace
+from .compilers import (
+    GCC_OSX,
+    GCC_MINGW,
+    GCC_CYGWIN,
+    GCC_STANDARD,
+    CLANG_OSX,
+    CLANG_WIN,
+    CLANG_STANDARD,
+    ICC_OSX,
+    ICC_WIN,
+    ICC_STANDARD,
+    base_options,
+    clike_langs,
+    c_suffixes,
+    cpp_suffixes,
+    get_base_compile_args,
+    get_base_link_args,
+    is_header,
+    is_source,
+    is_assembly,
+    is_llvm_ir,
+    is_object,
+    is_library,
+    lang_suffixes,
+    sanitizer_compile_args,
+    sort_clike,
+    ClangCompiler,
+    CompilerArgs,
+    GnuCompiler,
+    IntelCompiler,
+)
+from .c import (
+    CCompiler,
+    ClangCCompiler,
+    GnuCCompiler,
+    IntelCCompiler,
+    VisualStudioCCompiler,
+)
+from .cpp import (
+    CPPCompiler,
+    ClangCPPCompiler,
+    GnuCPPCompiler,
+    IntelCPPCompiler,
+    VisualStudioCPPCompiler,
+)
+from .cs import MonoCompiler
+from .d import (
+    DCompiler,
+    DmdDCompiler,
+    GnuDCompiler,
+    LLVMDCompiler,
+)
+from .fortran import (
+    FortranCompiler,
+    G95FortranCompiler,
+    GnuFortranCompiler,
+    IntelFortranCompiler,
+    NAGFortranCompiler,
+    Open64FortranCompiler,
+    PathScaleFortranCompiler,
+    PGIFortranCompiler,
+    SunFortranCompiler,
+)
+from .java import JavaCompiler
+from .objc import (
+    ObjCCompiler,
+    ClangObjCCompiler,
+    GnuObjCCompiler,
+)
+from .objcpp import (
+    ObjCPPCompiler,
+    ClangObjCPPCompiler,
+    GnuObjCPPCompiler,
+)
+from .rust import RustCompiler
+from .swift import SwiftCompiler
+from .vala import ValaCompiler
diff --git a/mesonbuild/compilers/c.py b/mesonbuild/compilers/c.py
new file mode 100644
index 0000000..c164ccd
--- /dev/null
+++ b/mesonbuild/compilers/c.py
@@ -0,0 +1,1007 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import subprocess, os.path, tempfile
+
+from .. import mlog
+from .. import coredata
+from ..mesonlib import EnvironmentException, version_compare, Popen_safe
+
+from .compilers import (
+    GCC_MINGW,
+    get_largefile_args,
+    gnu_winlibs,
+    msvc_buildtype_args,
+    msvc_buildtype_linker_args,
+    msvc_winlibs,
+    ClangCompiler,
+    Compiler,
+    CompilerArgs,
+    CrossNoRunException,
+    GnuCompiler,
+    IntelCompiler,
+    RunResult,
+)
+
+
+class CCompiler(Compiler):
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        # If a child ObjC or CPP class has already set it, don't set it ourselves
+        if not hasattr(self, 'language'):
+            self.language = 'c'
+        super().__init__(exelist, version)
+        self.id = 'unknown'
+        self.is_cross = is_cross
+        self.can_compile_suffixes.add('h')
+        if isinstance(exe_wrapper, str):
+            self.exe_wrapper = [exe_wrapper]
+        else:
+            self.exe_wrapper = exe_wrapper
+
+    def needs_static_linker(self):
+        return True # When compiling static libraries, so yes.
+
+    def get_always_args(self):
+        '''
+        Args that are always-on for all C compilers other than MSVC
+        '''
+        return ['-pipe'] + get_largefile_args(self)
+
+    def get_linker_debug_crt_args(self):
+        """
+        Arguments needed to select a debug crt for the linker
+        This is only needed for MSVC
+        """
+        return []
+
+    def get_no_stdinc_args(self):
+        return ['-nostdinc']
+
+    def get_no_stdlib_link_args(self):
+        return ['-nostdlib']
+
+    def get_warn_args(self, level):
+        return self.warn_args[level]
+
+    def get_no_warn_args(self):
+        # Almost every compiler uses this for disabling warnings
+        return ['-w']
+
+    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
+        return []
+
+    def split_shlib_to_parts(self, fname):
+        return None, fname
+
+    # The default behavior is this, override in MSVC
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return ['-MMD', '-MQ', outtarget, '-MF', outfile]
+
+    def depfile_for_object(self, objfile):
+        return objfile + '.' + self.get_depfile_suffix()
+
+    def get_depfile_suffix(self):
+        return 'd'
+
+    def get_exelist(self):
+        return self.exelist[:]
+
+    def get_linker_exelist(self):
+        return self.exelist[:]
+
+    def get_preprocess_only_args(self):
+        return ['-E', '-P']
+
+    def get_compile_only_args(self):
+        return ['-c']
+
+    def get_no_optimization_args(self):
+        return ['-O0']
+
+    def get_compiler_check_args(self):
+        '''
+        Get arguments useful for compiler checks such as being permissive in
+        the code quality and not doing any optimization.
+        '''
+        return self.get_no_optimization_args()
+
+    def get_output_args(self, target):
+        return ['-o', target]
+
+    def get_linker_output_args(self, outputname):
+        return ['-o', outputname]
+
+    def get_coverage_args(self):
+        return ['--coverage']
+
+    def get_coverage_link_args(self):
+        return ['--coverage']
+
+    def get_werror_args(self):
+        return ['-Werror']
+
+    def get_std_exe_link_args(self):
+        return []
+
+    def get_include_args(self, path, is_system):
+        if path == '':
+            path = '.'
+        if is_system:
+            return ['-isystem', path]
+        return ['-I' + path]
+
+    def get_std_shared_lib_link_args(self):
+        return ['-shared']
+
+    def get_library_dirs(self):
+        stdo = Popen_safe(self.exelist + ['--print-search-dirs'])[1]
+        for line in stdo.split('\n'):
+            if line.startswith('libraries:'):
+                libstr = line.split('=', 1)[1]
+                return libstr.split(':')
+        return []
+
+    def get_pic_args(self):
+        return ['-fPIC']
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def get_pch_use_args(self, pch_dir, header):
+        return ['-include', os.path.split(header)[-1]]
+
+    def get_pch_name(self, header_name):
+        return os.path.split(header_name)[-1] + '.' + self.get_pch_suffix()
+
+    def get_linker_search_args(self, dirname):
+        return ['-L' + dirname]
+
+    def gen_import_library_args(self, implibname):
+        """
+        The name of the outputted import library
+
+        This implementation is used only on Windows by compilers that use GNU ld
+        """
+        return ['-Wl,--out-implib=' + implibname]
+
+    def sanity_check_impl(self, work_dir, environment, sname, code):
+        mlog.debug('Sanity testing ' + self.language + ' compiler:', ' '.join(self.exelist))
+        mlog.debug('Is cross compiler: %s.' % str(self.is_cross))
+
+        extra_flags = []
+        source_name = os.path.join(work_dir, sname)
+        binname = sname.rsplit('.', 1)[0]
+        if self.is_cross:
+            binname += '_cross'
+            if self.exe_wrapper is None:
+                # Linking cross built apps is painful. You can't really
+                # tell if you should use -nostdlib or not and for example
+                # on OSX the compiler binary is the same but you need
+                # a ton of compiler flags to differentiate between
+                # arm and x86_64. So just compile.
+                extra_flags += self.get_cross_extra_flags(environment, link=False)
+                extra_flags += self.get_compile_only_args()
+            else:
+                extra_flags += self.get_cross_extra_flags(environment, link=True)
+        # Is a valid executable output for all toolchains and platforms
+        binname += '.exe'
+        # Write binary check source
+        binary_name = os.path.join(work_dir, binname)
+        with open(source_name, 'w') as ofile:
+            ofile.write(code)
+        # Compile sanity check
+        cmdlist = self.exelist + extra_flags + [source_name] + self.get_output_args(binary_name)
+        pc, stdo, stde = Popen_safe(cmdlist, cwd=work_dir)
+        mlog.debug('Sanity check compiler command line:', ' '.join(cmdlist))
+        mlog.debug('Sanity check compile stdout:')
+        mlog.debug(stdo)
+        mlog.debug('-----\nSanity check compile stderr:')
+        mlog.debug(stde)
+        mlog.debug('-----')
+        if pc.returncode != 0:
+            raise EnvironmentException('Compiler {0} can not compile programs.'.format(self.name_string()))
+        # Run sanity check
+        if self.is_cross:
+            if self.exe_wrapper is None:
+                # Can't check if the binaries run so we have to assume they do
+                return
+            cmdlist = self.exe_wrapper + [binary_name]
+        else:
+            cmdlist = [binary_name]
+        mlog.debug('Running test binary command: ' + ' '.join(cmdlist))
+        pe = subprocess.Popen(cmdlist)
+        pe.wait()
+        if pe.returncode != 0:
+            raise EnvironmentException('Executables created by {0} compiler {1} are not runnable.'.format(self.language, self.name_string()))
+
+    def sanity_check(self, work_dir, environment):
+        code = 'int main(int argc, char **argv) { int class=0; return class; }\n'
+        return self.sanity_check_impl(work_dir, environment, 'sanitycheckc.c', code)
+
+    def has_header(self, hname, prefix, env, extra_args=None, dependencies=None):
+        fargs = {'prefix': prefix, 'header': hname}
+        code = '''{prefix}
+        #ifdef __has_include
+         #if !__has_include("{header}")
+          #error "Header '{header}' could not be found"
+         #endif
+        #else
+         #include <{header}>
+        #endif'''
+        return self.compiles(code.format(**fargs), env, extra_args,
+                             dependencies, 'preprocess')
+
+    def has_header_symbol(self, hname, symbol, prefix, env, extra_args=None, dependencies=None):
+        fargs = {'prefix': prefix, 'header': hname, 'symbol': symbol}
+        t = '''{prefix}
+        #include <{header}>
+        int main () {{
+            /* If it's not defined as a macro, try to use as a symbol */
+            #ifndef {symbol}
+                {symbol};
+            #endif
+        }}'''
+        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
+
+    def _get_compiler_check_args(self, env, extra_args, dependencies, mode='compile'):
+        if extra_args is None:
+            extra_args = []
+        elif isinstance(extra_args, str):
+            extra_args = [extra_args]
+        if dependencies is None:
+            dependencies = []
+        elif not isinstance(dependencies, list):
+            dependencies = [dependencies]
+        # Collect compiler arguments
+        args = CompilerArgs(self)
+        for d in dependencies:
+            # Add compile flags needed by dependencies
+            args += d.get_compile_args()
+            if mode == 'link':
+                # Add link flags needed to find dependencies
+                args += d.get_link_args()
+        # Select a CRT if needed since we're linking
+        if mode == 'link':
+            args += self.get_linker_debug_crt_args()
+        # Read c_args/cpp_args/etc from the cross-info file (if needed)
+        args += self.get_cross_extra_flags(env, link=(mode == 'link'))
+        if not self.is_cross:
+            if mode == 'preprocess':
+                # Add CPPFLAGS from the env.
+                args += env.coredata.external_preprocess_args[self.language]
+            elif mode == 'compile':
+                # Add CFLAGS/CXXFLAGS/OBJCFLAGS/OBJCXXFLAGS from the env
+                args += env.coredata.external_args[self.language]
+            elif mode == 'link':
+                # Add LDFLAGS from the env
+                args += env.coredata.external_link_args[self.language]
+        args += self.get_compiler_check_args()
+        # extra_args must override all other arguments, so we add them last
+        args += extra_args
+        return args
+
+    def compiles(self, code, env, extra_args=None, dependencies=None, mode='compile'):
+        args = self._get_compiler_check_args(env, extra_args, dependencies, mode)
+        # We only want to compile; not link
+        with self.compile(code, args.to_native(), mode) as p:
+            return p.returncode == 0
+
+    def _links_wrapper(self, code, env, extra_args, dependencies):
+        "Shares common code between self.links and self.run"
+        args = self._get_compiler_check_args(env, extra_args, dependencies, mode='link')
+        return self.compile(code, args)
+
+    def links(self, code, env, extra_args=None, dependencies=None):
+        with self._links_wrapper(code, env, extra_args, dependencies) as p:
+            return p.returncode == 0
+
+    def run(self, code, env, extra_args=None, dependencies=None):
+        if self.is_cross and self.exe_wrapper is None:
+            raise CrossNoRunException('Can not run test applications in this cross environment.')
+        with self._links_wrapper(code, env, extra_args, dependencies) as p:
+            if p.returncode != 0:
+                mlog.debug('Could not compile test file %s: %d\n' % (
+                    p.input_name,
+                    p.returncode))
+                return RunResult(False)
+            if self.is_cross:
+                cmdlist = self.exe_wrapper + [p.output_name]
+            else:
+                cmdlist = p.output_name
+            try:
+                pe, so, se = Popen_safe(cmdlist)
+            except Exception as e:
+                mlog.debug('Could not run: %s (error: %s)\n' % (cmdlist, e))
+                return RunResult(False)
+
+        mlog.debug('Program stdout:\n')
+        mlog.debug(so)
+        mlog.debug('Program stderr:\n')
+        mlog.debug(se)
+        return RunResult(True, pe.returncode, so, se)
+
+    def _compile_int(self, expression, prefix, env, extra_args, dependencies):
+        fargs = {'prefix': prefix, 'expression': expression}
+        t = '''#include <stdio.h>
+        {prefix}
+        int main() {{ static int a[1-2*!({expression})]; a[0]=0; return 0; }}'''
+        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
+
+    def cross_compute_int(self, expression, low, high, guess, prefix, env, extra_args, dependencies):
+        if isinstance(guess, int):
+            if self._compile_int('%s == %d' % (expression, guess), prefix, env, extra_args, dependencies):
+                return guess
+
+        cur = low
+        while low < high:
+            cur = int((low + high) / 2)
+            if cur == low:
+                break
+
+            if self._compile_int('%s >= %d' % (expression, cur), prefix, env, extra_args, dependencies):
+                low = cur
+            else:
+                high = cur
+
+        if self._compile_int('%s == %d' % (expression, cur), prefix, env, extra_args, dependencies):
+            return cur
+        raise EnvironmentException('Cross-compile check overflowed')
+
+    def compute_int(self, expression, low, high, guess, prefix, env, extra_args=None, dependencies=None):
+        if extra_args is None:
+            extra_args = []
+        if self.is_cross:
+            return self.cross_compute_int(expression, low, high, guess, prefix, env, extra_args, dependencies)
+        fargs = {'prefix': prefix, 'expression': expression}
+        t = '''#include<stdio.h>
+        {prefix}
+        int main(int argc, char **argv) {{
+            printf("%ld\\n", (long)({expression}));
+            return 0;
+        }};'''
+        res = self.run(t.format(**fargs), env, extra_args, dependencies)
+        if not res.compiled:
+            return -1
+        if res.returncode != 0:
+            raise EnvironmentException('Could not run compute_int test binary.')
+        return int(res.stdout)
+
+    def cross_sizeof(self, typename, prefix, env, extra_args=None, dependencies=None):
+        if extra_args is None:
+            extra_args = []
+        fargs = {'prefix': prefix, 'type': typename}
+        t = '''#include <stdio.h>
+        {prefix}
+        int main(int argc, char **argv) {{
+            {type} something;
+        }}'''
+        if not self.compiles(t.format(**fargs), env, extra_args, dependencies):
+            return -1
+        return self.cross_compute_int('sizeof(%s)' % typename, 1, 128, None, prefix, env, extra_args, dependencies)
+
+    def sizeof(self, typename, prefix, env, extra_args=None, dependencies=None):
+        if extra_args is None:
+            extra_args = []
+        fargs = {'prefix': prefix, 'type': typename}
+        if self.is_cross:
+            return self.cross_sizeof(typename, prefix, env, extra_args, dependencies)
+        t = '''#include<stdio.h>
+        {prefix}
+        int main(int argc, char **argv) {{
+            printf("%ld\\n", (long)(sizeof({type})));
+            return 0;
+        }};'''
+        res = self.run(t.format(**fargs), env, extra_args, dependencies)
+        if not res.compiled:
+            return -1
+        if res.returncode != 0:
+            raise EnvironmentException('Could not run sizeof test binary.')
+        return int(res.stdout)
+
+    def cross_alignment(self, typename, prefix, env, extra_args=None, dependencies=None):
+        if extra_args is None:
+            extra_args = []
+        fargs = {'prefix': prefix, 'type': typename}
+        t = '''#include <stdio.h>
+        {prefix}
+        int main(int argc, char **argv) {{
+            {type} something;
+        }}'''
+        if not self.compiles(t.format(**fargs), env, extra_args, dependencies):
+            return -1
+        t = '''#include <stddef.h>
+        {prefix}
+        struct tmp {{
+            char c;
+            {type} target;
+        }};'''
+        return self.cross_compute_int('offsetof(struct tmp, target)', 1, 1024, None, t.format(**fargs), env, extra_args, dependencies)
+
+    def alignment(self, typename, prefix, env, extra_args=None, dependencies=None):
+        if extra_args is None:
+            extra_args = []
+        if self.is_cross:
+            return self.cross_alignment(typename, prefix, env, extra_args, dependencies)
+        fargs = {'prefix': prefix, 'type': typename}
+        t = '''#include <stdio.h>
+        #include <stddef.h>
+        {prefix}
+        struct tmp {{
+            char c;
+            {type} target;
+        }};
+        int main(int argc, char **argv) {{
+            printf("%d", (int)offsetof(struct tmp, target));
+            return 0;
+        }}'''
+        res = self.run(t.format(**fargs), env, extra_args, dependencies)
+        if not res.compiled:
+            raise EnvironmentException('Could not compile alignment test.')
+        if res.returncode != 0:
+            raise EnvironmentException('Could not run alignment test binary.')
+        align = int(res.stdout)
+        if align == 0:
+            raise EnvironmentException('Could not determine alignment of %s. Sorry. You might want to file a bug.' % typename)
+        return align
+
+    def get_define(self, dname, prefix, env, extra_args, dependencies):
+        delim = '"MESON_GET_DEFINE_DELIMITER"'
+        fargs = {'prefix': prefix, 'define': dname, 'delim': delim}
+        code = '''
+        {prefix}
+        #ifndef {define}
+        # define {define}
+        #endif
+        {delim}\n{define}'''
+        args = self._get_compiler_check_args(env, extra_args, dependencies,
+                                             mode='preprocess').to_native()
+        with self.compile(code.format(**fargs), args, 'preprocess') as p:
+            if p.returncode != 0:
+                raise EnvironmentException('Could not get define {!r}'.format(dname))
+        # Get the preprocessed value after the delimiter,
+        # minus the extra newline at the end
+        return p.stdo.split(delim + '\n')[-1][:-1]
+
+    @staticmethod
+    def _no_prototype_templ():
+        """
+        Try to find the function without a prototype from a header by defining
+        our own dummy prototype and trying to link with the C library (and
+        whatever else the compiler links in by default). This is very similar
+        to the check performed by Autoconf for AC_CHECK_FUNCS.
+        """
+        # Define the symbol to something else since it is defined by the
+        # includes or defines listed by the user or by the compiler. This may
+        # include, for instance _GNU_SOURCE which must be defined before
+        # limits.h, which includes features.h
+        # Then, undef the symbol to get rid of it completely.
+        head = '''
+        #define {func} meson_disable_define_of_{func}
+        {prefix}
+        #include <limits.h>
+        #undef {func}
+        '''
+        # Override any GCC internal prototype and declare our own definition for
+        # the symbol. Use char because that's unlikely to be an actual return
+        # value for a function which ensures that we override the definition.
+        head += '''
+        #ifdef __cplusplus
+        extern "C"
+        #endif
+        char {func} ();
+        '''
+        # The actual function call
+        main = '''
+        int main () {{
+          return {func} ();
+        }}'''
+        return head, main
+
+    @staticmethod
+    def _have_prototype_templ():
+        """
+        Returns a head-er and main() call that uses the headers listed by the
+        user for the function prototype while checking if a function exists.
+        """
+        # Add the 'prefix', aka defines, includes, etc that the user provides
+        # This may include, for instance _GNU_SOURCE which must be defined
+        # before limits.h, which includes features.h
+        head = '{prefix}\n#include <limits.h>\n'
+        # We don't know what the function takes or returns, so return it as an int.
+        # Just taking the address or comparing it to void is not enough because
+        # compilers are smart enough to optimize it away. The resulting binary
+        # is not run so we don't care what the return value is.
+        main = '''\nint main() {{
+            void *a = (void*) &{func};
+            long b = (long) a;
+            return (int) b;
+        }}'''
+        return head, main
+
+    def has_function(self, funcname, prefix, env, extra_args=None, dependencies=None):
+        """
+        First, this function looks for the symbol in the default libraries
+        provided by the compiler (stdlib + a few others usually). If that
+        fails, it checks if any of the headers specified in the prefix provide
+        an implementation of the function, and if that fails, it checks if it's
+        implemented as a compiler-builtin.
+        """
+        if extra_args is None:
+            extra_args = []
+
+        # Short-circuit if the check is already provided by the cross-info file
+        varname = 'has function ' + funcname
+        varname = varname.replace(' ', '_')
+        if self.is_cross:
+            val = env.cross_info.config['properties'].get(varname, None)
+            if val is not None:
+                if isinstance(val, bool):
+                    return val
+                raise EnvironmentException('Cross variable {0} is not a boolean.'.format(varname))
+
+        fargs = {'prefix': prefix, 'func': funcname}
+
+        # glibc defines functions that are not available on Linux as stubs that
+        # fail with ENOSYS (such as e.g. lchmod). In this case we want to fail
+        # instead of detecting the stub as a valid symbol.
+        # We already included limits.h earlier to ensure that these are defined
+        # for stub functions.
+        stubs_fail = '''
+        #if defined __stub_{func} || defined __stub___{func}
+        fail fail fail this function is not going to work
+        #endif
+        '''
+
+        # If we have any includes in the prefix supplied by the user, assume
+        # that the user wants us to use the symbol prototype defined in those
+        # includes. If not, then try to do the Autoconf-style check with
+        # a dummy prototype definition of our own.
+        # This is needed when the linker determines symbol availability from an
+        # SDK based on the prototype in the header provided by the SDK.
+        # Ignoring this prototype would result in the symbol always being
+        # marked as available.
+        if '#include' in prefix:
+            head, main = self._have_prototype_templ()
+        else:
+            head, main = self._no_prototype_templ()
+        templ = head + stubs_fail + main
+
+        if self.links(templ.format(**fargs), env, extra_args, dependencies):
+            return True
+
+        # MSVC does not have compiler __builtin_-s.
+        if self.get_id() == 'msvc':
+            return False
+
+        # Detect function as a built-in
+        #
+        # Some functions like alloca() are defined as compiler built-ins which
+        # are inlined by the compiler and you can't take their address, so we
+        # need to look for them differently. On nice compilers like clang, we
+        # can just directly use the __has_builtin() macro.
+        fargs['no_includes'] = '#include' not in prefix
+        t = '''{prefix}
+        int main() {{
+        #ifdef __has_builtin
+            #if !__has_builtin(__builtin_{func})
+                #error "__builtin_{func} not found"
+            #endif
+        #elif ! defined({func})
+            /* Check for __builtin_{func} only if no includes were added to the
+             * prefix above, which means no definition of {func} can be found.
+             * We would always check for this, but we get false positives on
+             * MSYS2 if we do. Their toolchain is broken, but we can at least
+             * give them a workaround. */
+            #if {no_includes:d}
+                __builtin_{func};
+            #else
+                #error "No definition for __builtin_{func} found in the prefix"
+            #endif
+        #endif
+        }}'''
+        return self.links(t.format(**fargs), env, extra_args, dependencies)
+
+    def has_members(self, typename, membernames, prefix, env, extra_args=None, dependencies=None):
+        if extra_args is None:
+            extra_args = []
+        fargs = {'prefix': prefix, 'type': typename, 'name': 'foo'}
+        # Create code that accesses all members
+        members = ''
+        for member in membernames:
+            members += '{}.{};\n'.format(fargs['name'], member)
+        fargs['members'] = members
+        t = '''{prefix}
+        void bar() {{
+            {type} {name};
+            {members}
+        }};'''
+        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
+
+    def has_type(self, typename, prefix, env, extra_args, dependencies=None):
+        fargs = {'prefix': prefix, 'type': typename}
+        t = '''{prefix}
+        void bar() {{
+            sizeof({type});
+        }};'''
+        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
+
+    def symbols_have_underscore_prefix(self, env):
+        '''
+        Check if the compiler prefixes an underscore to global C symbols
+        '''
+        symbol_name = b'meson_uscore_prefix'
+        code = '''#ifdef __cplusplus
+        extern "C" {
+        #endif
+        void ''' + symbol_name.decode() + ''' () {}
+        #ifdef __cplusplus
+        }
+        #endif
+        '''
+        args = self.get_cross_extra_flags(env, link=False)
+        args += self.get_compiler_check_args()
+        n = 'symbols_have_underscore_prefix'
+        with self.compile(code, args, 'compile') as p:
+            if p.returncode != 0:
+                m = 'BUG: Unable to compile {!r} check: {}'
+                raise RuntimeError(m.format(n, p.stdo))
+            if not os.path.isfile(p.output_name):
+                m = 'BUG: Can\'t find compiled test code for {!r} check'
+                raise RuntimeError(m.format(n))
+            with open(p.output_name, 'rb') as o:
+                for line in o:
+                    # Check if the underscore form of the symbol is somewhere
+                    # in the output file.
+                    if b'_' + symbol_name in line:
+                        return True
+                    # Else, check if the non-underscored form is present
+                    elif symbol_name in line:
+                        return False
+        raise RuntimeError('BUG: {!r} check failed unexpectedly'.format(n))
+
+    def find_library(self, libname, env, extra_dirs):
+        # First try if we can just add the library as -l.
+        code = '''int main(int argc, char **argv) {
+    return 0;
+}
+        '''
+        if extra_dirs and isinstance(extra_dirs, str):
+            extra_dirs = [extra_dirs]
+        # Gcc + co seem to prefer builtin lib dirs to -L dirs.
+        # Only try to find std libs if no extra dirs specified.
+        if not extra_dirs:
+            args = ['-l' + libname]
+            if self.links(code, env, extra_args=args):
+                return args
+        # Not found? Try to find the library file itself.
+        extra_dirs += self.get_library_dirs()
+        suffixes = ['so', 'dylib', 'lib', 'dll', 'a']
+        for d in extra_dirs:
+            for suffix in suffixes:
+                trial = os.path.join(d, 'lib' + libname + '.' + suffix)
+                if os.path.isfile(trial):
+                    return [trial]
+                trial2 = os.path.join(d, libname + '.' + suffix)
+                if os.path.isfile(trial2):
+                    return [trial2]
+        return None
+
+    def thread_flags(self):
+        return ['-pthread']
+
+    def thread_link_flags(self):
+        return ['-pthread']
+
+    def has_multi_arguments(self, args, env):
+        return self.compiles('int i;\n', env, extra_args=args)
+
+
+class ClangCCompiler(ClangCompiler, CCompiler):
+    def __init__(self, exelist, version, clang_type, is_cross, exe_wrapper=None):
+        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        ClangCompiler.__init__(self, clang_type)
+        default_warn_args = ['-Wall', '-Winvalid-pch']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+    def get_options(self):
+        return {'c_std': coredata.UserComboOption('c_std', 'C language standard to use',
+                                                  ['none', 'c89', 'c99', 'c11',
+                                                   'gnu89', 'gnu99', 'gnu11'],
+                                                  'none')}
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['c_std']
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        return args
+
+    def get_option_link_args(self, options):
+        return []
+
+
+class GnuCCompiler(GnuCompiler, CCompiler):
+    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
+        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        GnuCompiler.__init__(self, gcc_type, defines)
+        default_warn_args = ['-Wall', '-Winvalid-pch']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+    def get_options(self):
+        opts = {'c_std': coredata.UserComboOption('c_std', 'C language standard to use',
+                                                  ['none', 'c89', 'c99', 'c11',
+                                                   'gnu89', 'gnu99', 'gnu11'],
+                                                  'none')}
+        if self.gcc_type == GCC_MINGW:
+            opts.update({
+                'c_winlibs': coredata.UserStringArrayOption('c_winlibs', 'Standard Win libraries to link against',
+                                                            gnu_winlibs), })
+        return opts
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['c_std']
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        return args
+
+    def get_option_link_args(self, options):
+        if self.gcc_type == GCC_MINGW:
+            return options['c_winlibs'].value[:]
+        return []
+
+    def get_std_shared_lib_link_args(self):
+        return ['-shared']
+
+
+class IntelCCompiler(IntelCompiler, CCompiler):
+    def __init__(self, exelist, version, icc_type, is_cross, exe_wrapper=None):
+        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        IntelCompiler.__init__(self, icc_type)
+        self.lang_header = 'c-header'
+        default_warn_args = ['-Wall', '-w3', '-diag-disable:remark', '-Wpch-messages']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+    def get_options(self):
+        c_stds = ['c89', 'c99']
+        g_stds = ['gnu89', 'gnu99']
+        if version_compare(self.version, '>=16.0.0'):
+            c_stds += ['c11']
+        opts = {'c_std': coredata.UserComboOption('c_std', 'C language standard to use',
+                                                  ['none'] + c_stds + g_stds,
+                                                  'none')}
+        return opts
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['c_std']
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        return args
+
+    def get_std_shared_lib_link_args(self):
+        return ['-shared']
+
+    def has_multi_arguments(self, args, env):
+        return super().has_multi_arguments(args + ['-diag-error', '10006'], env)
+
+
+class VisualStudioCCompiler(CCompiler):
+    std_warn_args = ['/W3']
+    std_opt_args = ['/O2']
+
+    def __init__(self, exelist, version, is_cross, exe_wrap):
+        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+        self.id = 'msvc'
+        # /showIncludes is needed for build dependency tracking in Ninja
+        # See: https://ninja-build.org/manual.html#_deps
+        self.always_args = ['/nologo', '/showIncludes']
+        self.warn_args = {'1': ['/W2'],
+                          '2': ['/W3'],
+                          '3': ['/W4']}
+        self.base_options = ['b_pch'] # FIXME add lto, pgo and the like
+
+    # Override CCompiler.get_always_args
+    def get_always_args(self):
+        return self.always_args
+
+    def get_linker_debug_crt_args(self):
+        """
+        Arguments needed to select a debug crt for the linker
+
+        Sometimes we need to manually select the CRT (C runtime) to use with
+        MSVC. One example is when trying to link with static libraries since
+        MSVC won't auto-select a CRT for us in that case and will error out
+        asking us to select one.
+        """
+        return ['/MDd']
+
+    def get_buildtype_args(self, buildtype):
+        return msvc_buildtype_args[buildtype]
+
+    def get_buildtype_linker_args(self, buildtype):
+        return msvc_buildtype_linker_args[buildtype]
+
+    def get_pch_suffix(self):
+        return 'pch'
+
+    def get_pch_name(self, header):
+        chopped = os.path.split(header)[-1].split('.')[:-1]
+        chopped.append(self.get_pch_suffix())
+        pchname = '.'.join(chopped)
+        return pchname
+
+    def get_pch_use_args(self, pch_dir, header):
+        base = os.path.split(header)[-1]
+        pchname = self.get_pch_name(header)
+        return ['/FI' + base, '/Yu' + base, '/Fp' + os.path.join(pch_dir, pchname)]
+
+    def get_preprocess_only_args(self):
+        return ['/EP']
+
+    def get_compile_only_args(self):
+        return ['/c']
+
+    def get_no_optimization_args(self):
+        return ['/Od']
+
+    def get_output_args(self, target):
+        if target.endswith('.exe'):
+            return ['/Fe' + target]
+        return ['/Fo' + target]
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return []
+
+    def get_linker_exelist(self):
+        return ['link'] # FIXME, should have same path as compiler.
+
+    def get_linker_always_args(self):
+        return ['/nologo']
+
+    def get_linker_output_args(self, outputname):
+        return ['/OUT:' + outputname]
+
+    def get_linker_search_args(self, dirname):
+        return ['/LIBPATH:' + dirname]
+
+    def get_pic_args(self):
+        return [] # PIC is handled by the loader on Windows
+
+    def get_std_shared_lib_link_args(self):
+        return ['/DLL']
+
+    def gen_vs_module_defs_args(self, defsfile):
+        if not isinstance(defsfile, str):
+            raise RuntimeError('Module definitions file should be str')
+        # With MSVC, DLLs only export symbols that are explicitly exported,
+        # so if a module defs file is specified, we use that to export symbols
+        return ['/DEF:' + defsfile]
+
+    def gen_pch_args(self, header, source, pchname):
+        objname = os.path.splitext(pchname)[0] + '.obj'
+        return objname, ['/Yc' + header, '/Fp' + pchname, '/Fo' + objname]
+
+    def gen_import_library_args(self, implibname):
+        "The name of the outputted import library"
+        return ['/IMPLIB:' + implibname]
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return []
+
+    # FIXME, no idea what these should be.
+    def thread_flags(self):
+        return []
+
+    def thread_link_flags(self):
+        return []
+
+    def get_options(self):
+        return {'c_winlibs': coredata.UserStringArrayOption('c_winlibs',
+                                                            'Windows libs to link against.',
+                                                            msvc_winlibs)
+                }
+
+    def get_option_link_args(self, options):
+        return options['c_winlibs'].value[:]
+
+    @classmethod
+    def unix_args_to_native(cls, args):
+        result = []
+        for i in args:
+            # -mms-bitfields is specific to MinGW-GCC
+            # -pthread is only valid for GCC
+            if i in ('-mms-bitfields', '-pthread'):
+                continue
+            if i.startswith('-L'):
+                i = '/LIBPATH:' + i[2:]
+            # Translate GNU-style -lfoo library name to the import library
+            elif i.startswith('-l'):
+                name = i[2:]
+                if name in ('m', 'c', 'pthread'):
+                    # With MSVC, these are provided by the C runtime which is
+                    # linked in by default
+                    continue
+                else:
+                    i = name + '.lib'
+            # -pthread in link flags is only used on Linux
+            elif i == '-pthread':
+                continue
+            result.append(i)
+        return result
+
+    def get_werror_args(self):
+        return ['/WX']
+
+    def get_include_args(self, path, is_system):
+        if path == '':
+            path = '.'
+        # msvc does not have a concept of system header dirs.
+        return ['-I' + path]
+
+    # Visual Studio is special. It ignores some arguments it does not
+    # understand and you can't tell it to error out on those.
+    # http://stackoverflow.com/questions/15259720/how-can-i-make-the-microsoft-c-compiler-treat-unknown-flags-as-errors-rather-t
+    def has_multi_arguments(self, args, env):
+        warning_text = '9002'
+        code = 'int i;\n'
+        (fd, srcname) = tempfile.mkstemp(suffix='.' + self.default_suffix)
+        os.close(fd)
+        with open(srcname, 'w') as ofile:
+            ofile.write(code)
+        # Read c_args/cpp_args/etc from the cross-info file (if needed)
+        extra_args = self.get_cross_extra_flags(env, link=False)
+        extra_args += self.get_compile_only_args()
+        commands = self.exelist + args + extra_args + [srcname]
+        mlog.debug('Running VS compile:')
+        mlog.debug('Command line: ', ' '.join(commands))
+        mlog.debug('Code:\n', code)
+        p, stdo, stde = Popen_safe(commands, cwd=os.path.split(srcname)[0])
+        if p.returncode != 0:
+            return False
+        return not(warning_text in stde or warning_text in stdo)
+
+    def get_compile_debugfile_args(self, rel_obj, pch=False):
+        pdbarr = rel_obj.split('.')[:-1]
+        pdbarr += ['pdb']
+        args = ['/Fd' + '.'.join(pdbarr)]
+        # When generating a PDB file with PCH, all compile commands write
+        # to the same PDB file. Hence, we need to serialize the PDB
+        # writes using /FS since we do parallel builds. This slows down the
+        # build obviously, which is why we only do this when PCH is on.
+        # This was added in Visual Studio 2013 (MSVC 18.0). Before that it was
+        # always on: https://msdn.microsoft.com/en-us/library/dn502518.aspx
+        if pch and version_compare(self.version, '>=18.0'):
+            args = ['/FS'] + args
+        return args
+
+    def get_link_debugfile_args(self, targetfile):
+        pdbarr = targetfile.split('.')[:-1]
+        pdbarr += ['pdb']
+        return ['/DEBUG', '/PDB:' + '.'.join(pdbarr)]
+
+    def get_link_whole_for(self, args):
+        # Only since VS2015
+        if not isinstance(args, list):
+            args = [args]
+        return ['/WHOLEARCHIVE:' + x for x in args]
diff --git a/mesonbuild/compilers/compilers.py b/mesonbuild/compilers/compilers.py
index 0db8304..3d54986 100644
--- a/mesonbuild/compilers/compilers.py
+++ b/mesonbuild/compilers/compilers.py
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import contextlib, os.path, re, shutil, subprocess, tempfile
+import contextlib, os.path, re, tempfile
 
 from ..linkers import StaticLinker
 from .. import coredata
@@ -783,1667 +783,6 @@ class Compiler:
             args += ['-Wl,-rpath-link,' + lpaths]
         return args
 
-class CCompiler(Compiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        # If a child ObjC or CPP class has already set it, don't set it ourselves
-        if not hasattr(self, 'language'):
-            self.language = 'c'
-        super().__init__(exelist, version)
-        self.id = 'unknown'
-        self.is_cross = is_cross
-        self.can_compile_suffixes.add('h')
-        if isinstance(exe_wrapper, str):
-            self.exe_wrapper = [exe_wrapper]
-        else:
-            self.exe_wrapper = exe_wrapper
-
-    def needs_static_linker(self):
-        return True # When compiling static libraries, so yes.
-
-    def get_always_args(self):
-        '''
-        Args that are always-on for all C compilers other than MSVC
-        '''
-        return ['-pipe'] + get_largefile_args(self)
-
-    def get_linker_debug_crt_args(self):
-        """
-        Arguments needed to select a debug crt for the linker
-        This is only needed for MSVC
-        """
-        return []
-
-    def get_no_stdinc_args(self):
-        return ['-nostdinc']
-
-    def get_no_stdlib_link_args(self):
-        return ['-nostdlib']
-
-    def get_warn_args(self, level):
-        return self.warn_args[level]
-
-    def get_no_warn_args(self):
-        # Almost every compiler uses this for disabling warnings
-        return ['-w']
-
-    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
-        return []
-
-    def split_shlib_to_parts(self, fname):
-        return None, fname
-
-    # The default behavior is this, override in MSVC
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return ['-MMD', '-MQ', outtarget, '-MF', outfile]
-
-    def depfile_for_object(self, objfile):
-        return objfile + '.' + self.get_depfile_suffix()
-
-    def get_depfile_suffix(self):
-        return 'd'
-
-    def get_exelist(self):
-        return self.exelist[:]
-
-    def get_linker_exelist(self):
-        return self.exelist[:]
-
-    def get_preprocess_only_args(self):
-        return ['-E', '-P']
-
-    def get_compile_only_args(self):
-        return ['-c']
-
-    def get_no_optimization_args(self):
-        return ['-O0']
-
-    def get_compiler_check_args(self):
-        '''
-        Get arguments useful for compiler checks such as being permissive in
-        the code quality and not doing any optimization.
-        '''
-        return self.get_no_optimization_args()
-
-    def get_output_args(self, target):
-        return ['-o', target]
-
-    def get_linker_output_args(self, outputname):
-        return ['-o', outputname]
-
-    def get_coverage_args(self):
-        return ['--coverage']
-
-    def get_coverage_link_args(self):
-        return ['--coverage']
-
-    def get_werror_args(self):
-        return ['-Werror']
-
-    def get_std_exe_link_args(self):
-        return []
-
-    def get_include_args(self, path, is_system):
-        if path == '':
-            path = '.'
-        if is_system:
-            return ['-isystem', path]
-        return ['-I' + path]
-
-    def get_std_shared_lib_link_args(self):
-        return ['-shared']
-
-    def get_library_dirs(self):
-        stdo = Popen_safe(self.exelist + ['--print-search-dirs'])[1]
-        for line in stdo.split('\n'):
-            if line.startswith('libraries:'):
-                libstr = line.split('=', 1)[1]
-                return libstr.split(':')
-        return []
-
-    def get_pic_args(self):
-        return ['-fPIC']
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def get_pch_use_args(self, pch_dir, header):
-        return ['-include', os.path.split(header)[-1]]
-
-    def get_pch_name(self, header_name):
-        return os.path.split(header_name)[-1] + '.' + self.get_pch_suffix()
-
-    def get_linker_search_args(self, dirname):
-        return ['-L' + dirname]
-
-    def gen_import_library_args(self, implibname):
-        """
-        The name of the outputted import library
-
-        This implementation is used only on Windows by compilers that use GNU ld
-        """
-        return ['-Wl,--out-implib=' + implibname]
-
-    def sanity_check_impl(self, work_dir, environment, sname, code):
-        mlog.debug('Sanity testing ' + self.language + ' compiler:', ' '.join(self.exelist))
-        mlog.debug('Is cross compiler: %s.' % str(self.is_cross))
-
-        extra_flags = []
-        source_name = os.path.join(work_dir, sname)
-        binname = sname.rsplit('.', 1)[0]
-        if self.is_cross:
-            binname += '_cross'
-            if self.exe_wrapper is None:
-                # Linking cross built apps is painful. You can't really
-                # tell if you should use -nostdlib or not and for example
-                # on OSX the compiler binary is the same but you need
-                # a ton of compiler flags to differentiate between
-                # arm and x86_64. So just compile.
-                extra_flags += self.get_cross_extra_flags(environment, link=False)
-                extra_flags += self.get_compile_only_args()
-            else:
-                extra_flags += self.get_cross_extra_flags(environment, link=True)
-        # Is a valid executable output for all toolchains and platforms
-        binname += '.exe'
-        # Write binary check source
-        binary_name = os.path.join(work_dir, binname)
-        with open(source_name, 'w') as ofile:
-            ofile.write(code)
-        # Compile sanity check
-        cmdlist = self.exelist + extra_flags + [source_name] + self.get_output_args(binary_name)
-        pc, stdo, stde = Popen_safe(cmdlist, cwd=work_dir)
-        mlog.debug('Sanity check compiler command line:', ' '.join(cmdlist))
-        mlog.debug('Sanity check compile stdout:')
-        mlog.debug(stdo)
-        mlog.debug('-----\nSanity check compile stderr:')
-        mlog.debug(stde)
-        mlog.debug('-----')
-        if pc.returncode != 0:
-            raise EnvironmentException('Compiler {0} can not compile programs.'.format(self.name_string()))
-        # Run sanity check
-        if self.is_cross:
-            if self.exe_wrapper is None:
-                # Can't check if the binaries run so we have to assume they do
-                return
-            cmdlist = self.exe_wrapper + [binary_name]
-        else:
-            cmdlist = [binary_name]
-        mlog.debug('Running test binary command: ' + ' '.join(cmdlist))
-        pe = subprocess.Popen(cmdlist)
-        pe.wait()
-        if pe.returncode != 0:
-            raise EnvironmentException('Executables created by {0} compiler {1} are not runnable.'.format(self.language, self.name_string()))
-
-    def sanity_check(self, work_dir, environment):
-        code = 'int main(int argc, char **argv) { int class=0; return class; }\n'
-        return self.sanity_check_impl(work_dir, environment, 'sanitycheckc.c', code)
-
-    def has_header(self, hname, prefix, env, extra_args=None, dependencies=None):
-        fargs = {'prefix': prefix, 'header': hname}
-        code = '''{prefix}
-        #ifdef __has_include
-         #if !__has_include("{header}")
-          #error "Header '{header}' could not be found"
-         #endif
-        #else
-         #include <{header}>
-        #endif'''
-        return self.compiles(code.format(**fargs), env, extra_args,
-                             dependencies, 'preprocess')
-
-    def has_header_symbol(self, hname, symbol, prefix, env, extra_args=None, dependencies=None):
-        fargs = {'prefix': prefix, 'header': hname, 'symbol': symbol}
-        t = '''{prefix}
-        #include <{header}>
-        int main () {{
-            /* If it's not defined as a macro, try to use as a symbol */
-            #ifndef {symbol}
-                {symbol};
-            #endif
-        }}'''
-        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
-
-    def _get_compiler_check_args(self, env, extra_args, dependencies, mode='compile'):
-        if extra_args is None:
-            extra_args = []
-        elif isinstance(extra_args, str):
-            extra_args = [extra_args]
-        if dependencies is None:
-            dependencies = []
-        elif not isinstance(dependencies, list):
-            dependencies = [dependencies]
-        # Collect compiler arguments
-        args = CompilerArgs(self)
-        for d in dependencies:
-            # Add compile flags needed by dependencies
-            args += d.get_compile_args()
-            if mode == 'link':
-                # Add link flags needed to find dependencies
-                args += d.get_link_args()
-        # Select a CRT if needed since we're linking
-        if mode == 'link':
-            args += self.get_linker_debug_crt_args()
-        # Read c_args/cpp_args/etc from the cross-info file (if needed)
-        args += self.get_cross_extra_flags(env, link=(mode == 'link'))
-        if not self.is_cross:
-            if mode == 'preprocess':
-                # Add CPPFLAGS from the env.
-                args += env.coredata.external_preprocess_args[self.language]
-            elif mode == 'compile':
-                # Add CFLAGS/CXXFLAGS/OBJCFLAGS/OBJCXXFLAGS from the env
-                args += env.coredata.external_args[self.language]
-            elif mode == 'link':
-                # Add LDFLAGS from the env
-                args += env.coredata.external_link_args[self.language]
-        args += self.get_compiler_check_args()
-        # extra_args must override all other arguments, so we add them last
-        args += extra_args
-        return args
-
-    def compiles(self, code, env, extra_args=None, dependencies=None, mode='compile'):
-        args = self._get_compiler_check_args(env, extra_args, dependencies, mode)
-        # We only want to compile; not link
-        with self.compile(code, args.to_native(), mode) as p:
-            return p.returncode == 0
-
-    def _links_wrapper(self, code, env, extra_args, dependencies):
-        "Shares common code between self.links and self.run"
-        args = self._get_compiler_check_args(env, extra_args, dependencies, mode='link')
-        return self.compile(code, args)
-
-    def links(self, code, env, extra_args=None, dependencies=None):
-        with self._links_wrapper(code, env, extra_args, dependencies) as p:
-            return p.returncode == 0
-
-    def run(self, code, env, extra_args=None, dependencies=None):
-        if self.is_cross and self.exe_wrapper is None:
-            raise CrossNoRunException('Can not run test applications in this cross environment.')
-        with self._links_wrapper(code, env, extra_args, dependencies) as p:
-            if p.returncode != 0:
-                mlog.debug('Could not compile test file %s: %d\n' % (
-                    p.input_name,
-                    p.returncode))
-                return RunResult(False)
-            if self.is_cross:
-                cmdlist = self.exe_wrapper + [p.output_name]
-            else:
-                cmdlist = p.output_name
-            try:
-                pe, so, se = Popen_safe(cmdlist)
-            except Exception as e:
-                mlog.debug('Could not run: %s (error: %s)\n' % (cmdlist, e))
-                return RunResult(False)
-
-        mlog.debug('Program stdout:\n')
-        mlog.debug(so)
-        mlog.debug('Program stderr:\n')
-        mlog.debug(se)
-        return RunResult(True, pe.returncode, so, se)
-
-    def _compile_int(self, expression, prefix, env, extra_args, dependencies):
-        fargs = {'prefix': prefix, 'expression': expression}
-        t = '''#include <stdio.h>
-        {prefix}
-        int main() {{ static int a[1-2*!({expression})]; a[0]=0; return 0; }}'''
-        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
-
-    def cross_compute_int(self, expression, low, high, guess, prefix, env, extra_args, dependencies):
-        if isinstance(guess, int):
-            if self._compile_int('%s == %d' % (expression, guess), prefix, env, extra_args, dependencies):
-                return guess
-
-        cur = low
-        while low < high:
-            cur = int((low + high) / 2)
-            if cur == low:
-                break
-
-            if self._compile_int('%s >= %d' % (expression, cur), prefix, env, extra_args, dependencies):
-                low = cur
-            else:
-                high = cur
-
-        if self._compile_int('%s == %d' % (expression, cur), prefix, env, extra_args, dependencies):
-            return cur
-        raise EnvironmentException('Cross-compile check overflowed')
-
-    def compute_int(self, expression, low, high, guess, prefix, env, extra_args=None, dependencies=None):
-        if extra_args is None:
-            extra_args = []
-        if self.is_cross:
-            return self.cross_compute_int(expression, low, high, guess, prefix, env, extra_args, dependencies)
-        fargs = {'prefix': prefix, 'expression': expression}
-        t = '''#include<stdio.h>
-        {prefix}
-        int main(int argc, char **argv) {{
-            printf("%ld\\n", (long)({expression}));
-            return 0;
-        }};'''
-        res = self.run(t.format(**fargs), env, extra_args, dependencies)
-        if not res.compiled:
-            return -1
-        if res.returncode != 0:
-            raise EnvironmentException('Could not run compute_int test binary.')
-        return int(res.stdout)
-
-    def cross_sizeof(self, typename, prefix, env, extra_args=None, dependencies=None):
-        if extra_args is None:
-            extra_args = []
-        fargs = {'prefix': prefix, 'type': typename}
-        t = '''#include <stdio.h>
-        {prefix}
-        int main(int argc, char **argv) {{
-            {type} something;
-        }}'''
-        if not self.compiles(t.format(**fargs), env, extra_args, dependencies):
-            return -1
-        return self.cross_compute_int('sizeof(%s)' % typename, 1, 128, None, prefix, env, extra_args, dependencies)
-
-    def sizeof(self, typename, prefix, env, extra_args=None, dependencies=None):
-        if extra_args is None:
-            extra_args = []
-        fargs = {'prefix': prefix, 'type': typename}
-        if self.is_cross:
-            return self.cross_sizeof(typename, prefix, env, extra_args, dependencies)
-        t = '''#include<stdio.h>
-        {prefix}
-        int main(int argc, char **argv) {{
-            printf("%ld\\n", (long)(sizeof({type})));
-            return 0;
-        }};'''
-        res = self.run(t.format(**fargs), env, extra_args, dependencies)
-        if not res.compiled:
-            return -1
-        if res.returncode != 0:
-            raise EnvironmentException('Could not run sizeof test binary.')
-        return int(res.stdout)
-
-    def cross_alignment(self, typename, prefix, env, extra_args=None, dependencies=None):
-        if extra_args is None:
-            extra_args = []
-        fargs = {'prefix': prefix, 'type': typename}
-        t = '''#include <stdio.h>
-        {prefix}
-        int main(int argc, char **argv) {{
-            {type} something;
-        }}'''
-        if not self.compiles(t.format(**fargs), env, extra_args, dependencies):
-            return -1
-        t = '''#include <stddef.h>
-        {prefix}
-        struct tmp {{
-            char c;
-            {type} target;
-        }};'''
-        return self.cross_compute_int('offsetof(struct tmp, target)', 1, 1024, None, t.format(**fargs), env, extra_args, dependencies)
-
-    def alignment(self, typename, prefix, env, extra_args=None, dependencies=None):
-        if extra_args is None:
-            extra_args = []
-        if self.is_cross:
-            return self.cross_alignment(typename, prefix, env, extra_args, dependencies)
-        fargs = {'prefix': prefix, 'type': typename}
-        t = '''#include <stdio.h>
-        #include <stddef.h>
-        {prefix}
-        struct tmp {{
-            char c;
-            {type} target;
-        }};
-        int main(int argc, char **argv) {{
-            printf("%d", (int)offsetof(struct tmp, target));
-            return 0;
-        }}'''
-        res = self.run(t.format(**fargs), env, extra_args, dependencies)
-        if not res.compiled:
-            raise EnvironmentException('Could not compile alignment test.')
-        if res.returncode != 0:
-            raise EnvironmentException('Could not run alignment test binary.')
-        align = int(res.stdout)
-        if align == 0:
-            raise EnvironmentException('Could not determine alignment of %s. Sorry. You might want to file a bug.' % typename)
-        return align
-
-    def get_define(self, dname, prefix, env, extra_args, dependencies):
-        delim = '"MESON_GET_DEFINE_DELIMITER"'
-        fargs = {'prefix': prefix, 'define': dname, 'delim': delim}
-        code = '''
-        {prefix}
-        #ifndef {define}
-        # define {define}
-        #endif
-        {delim}\n{define}'''
-        args = self._get_compiler_check_args(env, extra_args, dependencies,
-                                             mode='preprocess').to_native()
-        with self.compile(code.format(**fargs), args, 'preprocess') as p:
-            if p.returncode != 0:
-                raise EnvironmentException('Could not get define {!r}'.format(dname))
-        # Get the preprocessed value after the delimiter,
-        # minus the extra newline at the end
-        return p.stdo.split(delim + '\n')[-1][:-1]
-
-    @staticmethod
-    def _no_prototype_templ():
-        """
-        Try to find the function without a prototype from a header by defining
-        our own dummy prototype and trying to link with the C library (and
-        whatever else the compiler links in by default). This is very similar
-        to the check performed by Autoconf for AC_CHECK_FUNCS.
-        """
-        # Define the symbol to something else since it is defined by the
-        # includes or defines listed by the user or by the compiler. This may
-        # include, for instance _GNU_SOURCE which must be defined before
-        # limits.h, which includes features.h
-        # Then, undef the symbol to get rid of it completely.
-        head = '''
-        #define {func} meson_disable_define_of_{func}
-        {prefix}
-        #include <limits.h>
-        #undef {func}
-        '''
-        # Override any GCC internal prototype and declare our own definition for
-        # the symbol. Use char because that's unlikely to be an actual return
-        # value for a function which ensures that we override the definition.
-        head += '''
-        #ifdef __cplusplus
-        extern "C"
-        #endif
-        char {func} ();
-        '''
-        # The actual function call
-        main = '''
-        int main () {{
-          return {func} ();
-        }}'''
-        return head, main
-
-    @staticmethod
-    def _have_prototype_templ():
-        """
-        Returns a head-er and main() call that uses the headers listed by the
-        user for the function prototype while checking if a function exists.
-        """
-        # Add the 'prefix', aka defines, includes, etc that the user provides
-        # This may include, for instance _GNU_SOURCE which must be defined
-        # before limits.h, which includes features.h
-        head = '{prefix}\n#include <limits.h>\n'
-        # We don't know what the function takes or returns, so return it as an int.
-        # Just taking the address or comparing it to void is not enough because
-        # compilers are smart enough to optimize it away. The resulting binary
-        # is not run so we don't care what the return value is.
-        main = '''\nint main() {{
-            void *a = (void*) &{func};
-            long b = (long) a;
-            return (int) b;
-        }}'''
-        return head, main
-
-    def has_function(self, funcname, prefix, env, extra_args=None, dependencies=None):
-        """
-        First, this function looks for the symbol in the default libraries
-        provided by the compiler (stdlib + a few others usually). If that
-        fails, it checks if any of the headers specified in the prefix provide
-        an implementation of the function, and if that fails, it checks if it's
-        implemented as a compiler-builtin.
-        """
-        if extra_args is None:
-            extra_args = []
-
-        # Short-circuit if the check is already provided by the cross-info file
-        varname = 'has function ' + funcname
-        varname = varname.replace(' ', '_')
-        if self.is_cross:
-            val = env.cross_info.config['properties'].get(varname, None)
-            if val is not None:
-                if isinstance(val, bool):
-                    return val
-                raise EnvironmentException('Cross variable {0} is not a boolean.'.format(varname))
-
-        fargs = {'prefix': prefix, 'func': funcname}
-
-        # glibc defines functions that are not available on Linux as stubs that
-        # fail with ENOSYS (such as e.g. lchmod). In this case we want to fail
-        # instead of detecting the stub as a valid symbol.
-        # We already included limits.h earlier to ensure that these are defined
-        # for stub functions.
-        stubs_fail = '''
-        #if defined __stub_{func} || defined __stub___{func}
-        fail fail fail this function is not going to work
-        #endif
-        '''
-
-        # If we have any includes in the prefix supplied by the user, assume
-        # that the user wants us to use the symbol prototype defined in those
-        # includes. If not, then try to do the Autoconf-style check with
-        # a dummy prototype definition of our own.
-        # This is needed when the linker determines symbol availability from an
-        # SDK based on the prototype in the header provided by the SDK.
-        # Ignoring this prototype would result in the symbol always being
-        # marked as available.
-        if '#include' in prefix:
-            head, main = self._have_prototype_templ()
-        else:
-            head, main = self._no_prototype_templ()
-        templ = head + stubs_fail + main
-
-        if self.links(templ.format(**fargs), env, extra_args, dependencies):
-            return True
-
-        # MSVC does not have compiler __builtin_-s.
-        if self.get_id() == 'msvc':
-            return False
-
-        # Detect function as a built-in
-        #
-        # Some functions like alloca() are defined as compiler built-ins which
-        # are inlined by the compiler and you can't take their address, so we
-        # need to look for them differently. On nice compilers like clang, we
-        # can just directly use the __has_builtin() macro.
-        fargs['no_includes'] = '#include' not in prefix
-        t = '''{prefix}
-        int main() {{
-        #ifdef __has_builtin
-            #if !__has_builtin(__builtin_{func})
-                #error "__builtin_{func} not found"
-            #endif
-        #elif ! defined({func})
-            /* Check for __builtin_{func} only if no includes were added to the
-             * prefix above, which means no definition of {func} can be found.
-             * We would always check for this, but we get false positives on
-             * MSYS2 if we do. Their toolchain is broken, but we can at least
-             * give them a workaround. */
-            #if {no_includes:d}
-                __builtin_{func};
-            #else
-                #error "No definition for __builtin_{func} found in the prefix"
-            #endif
-        #endif
-        }}'''
-        return self.links(t.format(**fargs), env, extra_args, dependencies)
-
-    def has_members(self, typename, membernames, prefix, env, extra_args=None, dependencies=None):
-        if extra_args is None:
-            extra_args = []
-        fargs = {'prefix': prefix, 'type': typename, 'name': 'foo'}
-        # Create code that accesses all members
-        members = ''
-        for member in membernames:
-            members += '{}.{};\n'.format(fargs['name'], member)
-        fargs['members'] = members
-        t = '''{prefix}
-        void bar() {{
-            {type} {name};
-            {members}
-        }};'''
-        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
-
-    def has_type(self, typename, prefix, env, extra_args, dependencies=None):
-        fargs = {'prefix': prefix, 'type': typename}
-        t = '''{prefix}
-        void bar() {{
-            sizeof({type});
-        }};'''
-        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
-
-    def symbols_have_underscore_prefix(self, env):
-        '''
-        Check if the compiler prefixes an underscore to global C symbols
-        '''
-        symbol_name = b'meson_uscore_prefix'
-        code = '''#ifdef __cplusplus
-        extern "C" {
-        #endif
-        void ''' + symbol_name.decode() + ''' () {}
-        #ifdef __cplusplus
-        }
-        #endif
-        '''
-        args = self.get_cross_extra_flags(env, link=False)
-        args += self.get_compiler_check_args()
-        n = 'symbols_have_underscore_prefix'
-        with self.compile(code, args, 'compile') as p:
-            if p.returncode != 0:
-                m = 'BUG: Unable to compile {!r} check: {}'
-                raise RuntimeError(m.format(n, p.stdo))
-            if not os.path.isfile(p.output_name):
-                m = 'BUG: Can\'t find compiled test code for {!r} check'
-                raise RuntimeError(m.format(n))
-            with open(p.output_name, 'rb') as o:
-                for line in o:
-                    # Check if the underscore form of the symbol is somewhere
-                    # in the output file.
-                    if b'_' + symbol_name in line:
-                        return True
-                    # Else, check if the non-underscored form is present
-                    elif symbol_name in line:
-                        return False
-        raise RuntimeError('BUG: {!r} check failed unexpectedly'.format(n))
-
-    def find_library(self, libname, env, extra_dirs):
-        # First try if we can just add the library as -l.
-        code = '''int main(int argc, char **argv) {
-    return 0;
-}
-        '''
-        if extra_dirs and isinstance(extra_dirs, str):
-            extra_dirs = [extra_dirs]
-        # Gcc + co seem to prefer builtin lib dirs to -L dirs.
-        # Only try to find std libs if no extra dirs specified.
-        if not extra_dirs:
-            args = ['-l' + libname]
-            if self.links(code, env, extra_args=args):
-                return args
-        # Not found? Try to find the library file itself.
-        extra_dirs += self.get_library_dirs()
-        suffixes = ['so', 'dylib', 'lib', 'dll', 'a']
-        for d in extra_dirs:
-            for suffix in suffixes:
-                trial = os.path.join(d, 'lib' + libname + '.' + suffix)
-                if os.path.isfile(trial):
-                    return [trial]
-                trial2 = os.path.join(d, libname + '.' + suffix)
-                if os.path.isfile(trial2):
-                    return [trial2]
-        return None
-
-    def thread_flags(self):
-        return ['-pthread']
-
-    def thread_link_flags(self):
-        return ['-pthread']
-
-    def has_multi_arguments(self, args, env):
-        return self.compiles('int i;\n', env, extra_args=args)
-
-class CPPCompiler(CCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrap):
-        # If a child ObjCPP class has already set it, don't set it ourselves
-        if not hasattr(self, 'language'):
-            self.language = 'cpp'
-        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-
-    def get_no_stdinc_args(self):
-        return ['-nostdinc++']
-
-    def sanity_check(self, work_dir, environment):
-        code = 'class breakCCompiler;int main(int argc, char **argv) { return 0; }\n'
-        return self.sanity_check_impl(work_dir, environment, 'sanitycheckcpp.cc', code)
-
-    def get_compiler_check_args(self):
-        # -fpermissive allows non-conforming code to compile which is necessary
-        # for many C++ checks. Particularly, the has_header_symbol check is
-        # too strict without this and always fails.
-        return super().get_compiler_check_args() + ['-fpermissive']
-
-    def has_header_symbol(self, hname, symbol, prefix, env, extra_args=None, dependencies=None):
-        # Check if it's a C-like symbol
-        if super().has_header_symbol(hname, symbol, prefix, env, extra_args, dependencies):
-            return True
-        # Check if it's a class or a template
-        if extra_args is None:
-            extra_args = []
-        fargs = {'prefix': prefix, 'header': hname, 'symbol': symbol}
-        t = '''{prefix}
-        #include <{header}>
-        using {symbol};
-        int main () {{ return 0; }}'''
-        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
-
-class ObjCCompiler(CCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrap):
-        self.language = 'objc'
-        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-
-    def sanity_check(self, work_dir, environment):
-        # TODO try to use sanity_check_impl instead of duplicated code
-        source_name = os.path.join(work_dir, 'sanitycheckobjc.m')
-        binary_name = os.path.join(work_dir, 'sanitycheckobjc')
-        extra_flags = self.get_cross_extra_flags(environment, link=False)
-        if self.is_cross:
-            extra_flags += self.get_compile_only_args()
-        with open(source_name, 'w') as ofile:
-            ofile.write('#import<stdio.h>\n'
-                        'int main(int argc, char **argv) { return 0; }\n')
-        pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('ObjC compiler %s can not compile programs.' % self.name_string())
-        if self.is_cross:
-            # Can't check if the binaries run so we have to assume they do
-            return
-        pe = subprocess.Popen(binary_name)
-        pe.wait()
-        if pe.returncode != 0:
-            raise EnvironmentException('Executables created by ObjC compiler %s are not runnable.' % self.name_string())
-
-class ObjCPPCompiler(CPPCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrap):
-        self.language = 'objcpp'
-        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-
-    def sanity_check(self, work_dir, environment):
-        # TODO try to use sanity_check_impl instead of duplicated code
-        source_name = os.path.join(work_dir, 'sanitycheckobjcpp.mm')
-        binary_name = os.path.join(work_dir, 'sanitycheckobjcpp')
-        extra_flags = self.get_cross_extra_flags(environment, link=False)
-        if self.is_cross:
-            extra_flags += self.get_compile_only_args()
-        with open(source_name, 'w') as ofile:
-            ofile.write('#import<stdio.h>\n'
-                        'class MyClass;'
-                        'int main(int argc, char **argv) { return 0; }\n')
-        pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('ObjC++ compiler %s can not compile programs.' % self.name_string())
-        if self.is_cross:
-            # Can't check if the binaries run so we have to assume they do
-            return
-        pe = subprocess.Popen(binary_name)
-        pe.wait()
-        if pe.returncode != 0:
-            raise EnvironmentException('Executables created by ObjC++ compiler %s are not runnable.' % self.name_string())
-
-class MonoCompiler(Compiler):
-    def __init__(self, exelist, version):
-        self.language = 'cs'
-        super().__init__(exelist, version)
-        self.id = 'mono'
-        self.monorunner = 'mono'
-
-    def get_output_args(self, fname):
-        return ['-out:' + fname]
-
-    def get_link_args(self, fname):
-        return ['-r:' + fname]
-
-    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
-        return []
-
-    def get_werror_args(self):
-        return ['-warnaserror']
-
-    def split_shlib_to_parts(self, fname):
-        return None, fname
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return []
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return []
-
-    def get_linker_exelist(self):
-        return self.exelist[:]
-
-    def get_compile_only_args(self):
-        return []
-
-    def get_linker_output_args(self, outputname):
-        return []
-
-    def get_coverage_args(self):
-        return []
-
-    def get_coverage_link_args(self):
-        return []
-
-    def get_std_exe_link_args(self):
-        return []
-
-    def get_include_args(self, path):
-        return []
-
-    def get_pic_args(self):
-        return []
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def get_pch_use_args(self, pch_dir, header):
-        return []
-
-    def get_pch_name(self, header_name):
-        return ''
-
-    def sanity_check(self, work_dir, environment):
-        src = 'sanity.cs'
-        obj = 'sanity.exe'
-        source_name = os.path.join(work_dir, src)
-        with open(source_name, 'w') as ofile:
-            ofile.write('''public class Sanity {
-    static public void Main () {
-    }
-}
-''')
-        pc = subprocess.Popen(self.exelist + [src], cwd=work_dir)
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('Mono compiler %s can not compile programs.' % self.name_string())
-        cmdlist = [self.monorunner, obj]
-        pe = subprocess.Popen(cmdlist, cwd=work_dir)
-        pe.wait()
-        if pe.returncode != 0:
-            raise EnvironmentException('Executables created by Mono compiler %s are not runnable.' % self.name_string())
-
-    def needs_static_linker(self):
-        return False
-
-    def get_buildtype_args(self, buildtype):
-        return mono_buildtype_args[buildtype]
-
-class JavaCompiler(Compiler):
-    def __init__(self, exelist, version):
-        self.language = 'java'
-        super().__init__(exelist, version)
-        self.id = 'unknown'
-        self.javarunner = 'java'
-
-    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
-        return []
-
-    def get_werror_args(self):
-        return ['-Werror']
-
-    def split_shlib_to_parts(self, fname):
-        return None, fname
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return []
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return []
-
-    def get_linker_exelist(self):
-        return self.exelist[:]
-
-    def get_compile_only_args(self):
-        return []
-
-    def get_output_args(self, subdir):
-        if subdir == '':
-            subdir = './'
-        return ['-d', subdir, '-s', subdir]
-
-    def get_linker_output_args(self, outputname):
-        return []
-
-    def get_coverage_args(self):
-        return []
-
-    def get_coverage_link_args(self):
-        return []
-
-    def get_std_exe_link_args(self):
-        return []
-
-    def get_include_args(self, path):
-        return []
-
-    def get_pic_args(self):
-        return []
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def get_pch_use_args(self, pch_dir, header):
-        return []
-
-    def get_pch_name(self, header_name):
-        return ''
-
-    def get_buildtype_args(self, buildtype):
-        return java_buildtype_args[buildtype]
-
-    def sanity_check(self, work_dir, environment):
-        src = 'SanityCheck.java'
-        obj = 'SanityCheck'
-        source_name = os.path.join(work_dir, src)
-        with open(source_name, 'w') as ofile:
-            ofile.write('''class SanityCheck {
-  public static void main(String[] args) {
-    int i;
-  }
-}
-''')
-        pc = subprocess.Popen(self.exelist + [src], cwd=work_dir)
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('Java compiler %s can not compile programs.' % self.name_string())
-        runner = shutil.which(self.javarunner)
-        if runner:
-            cmdlist = [runner, obj]
-            pe = subprocess.Popen(cmdlist, cwd=work_dir)
-            pe.wait()
-            if pe.returncode != 0:
-                raise EnvironmentException('Executables created by Java compiler %s are not runnable.' % self.name_string())
-        else:
-            m = "Java Virtual Machine wasn't found, but it's needed by Meson. " \
-                "Please install a JRE.\nIf you have specific needs where this " \
-                "requirement doesn't make sense, please open a bug at " \
-                "https://github.com/mesonbuild/meson/issues/new and tell us " \
-                "all about it."
-            raise EnvironmentException(m)
-
-    def needs_static_linker(self):
-        return False
-
-class ValaCompiler(Compiler):
-    def __init__(self, exelist, version):
-        self.language = 'vala'
-        super().__init__(exelist, version)
-        self.version = version
-        self.id = 'valac'
-        self.is_cross = False
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def needs_static_linker(self):
-        return False # Because compiles into C.
-
-    def get_output_args(self, target):
-        return ['-o', target]
-
-    def get_compile_only_args(self):
-        return ['-C']
-
-    def get_pic_args(self):
-        return []
-
-    def get_always_args(self):
-        return ['-C']
-
-    def get_warn_args(self, warning_level):
-        return []
-
-    def get_no_warn_args(self):
-        return ['--disable-warnings']
-
-    def get_werror_args(self):
-        return ['--fatal-warnings']
-
-    def sanity_check(self, work_dir, environment):
-        code = 'class MesonSanityCheck : Object { }'
-        args = self.get_cross_extra_flags(environment, link=False)
-        with self.compile(code, args, 'compile') as p:
-            if p.returncode != 0:
-                msg = 'Vala compiler {!r} can not compile programs' \
-                      ''.format(self.name_string())
-                raise EnvironmentException(msg)
-
-    def get_buildtype_args(self, buildtype):
-        if buildtype == 'debug' or buildtype == 'debugoptimized' or buildtype == 'minsize':
-            return ['--debug']
-        return []
-
-    def find_library(self, libname, env, extra_dirs):
-        if extra_dirs and isinstance(extra_dirs, str):
-            extra_dirs = [extra_dirs]
-        # Valac always looks in the default vapi dir, so only search there if
-        # no extra dirs are specified.
-        if not extra_dirs:
-            code = 'class MesonFindLibrary : Object { }'
-            vapi_args = ['--pkg', libname]
-            args = self.get_cross_extra_flags(env, link=False)
-            args += vapi_args
-            with self.compile(code, args, 'compile') as p:
-                if p.returncode == 0:
-                    return vapi_args
-        # Not found? Try to find the vapi file itself.
-        for d in extra_dirs:
-            vapi = os.path.join(d, libname + '.vapi')
-            if os.path.isfile(vapi):
-                return [vapi]
-        mlog.debug('Searched {!r} and {!r} wasn\'t found'.format(extra_dirs, libname))
-        return None
-
-class RustCompiler(Compiler):
-    def __init__(self, exelist, version):
-        self.language = 'rust'
-        super().__init__(exelist, version)
-        self.id = 'rustc'
-
-    def needs_static_linker(self):
-        return False
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def sanity_check(self, work_dir, environment):
-        source_name = os.path.join(work_dir, 'sanity.rs')
-        output_name = os.path.join(work_dir, 'rusttest')
-        with open(source_name, 'w') as ofile:
-            ofile.write('''fn main() {
-}
-''')
-        pc = subprocess.Popen(self.exelist + ['-o', output_name, source_name], cwd=work_dir)
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('Rust compiler %s can not compile programs.' % self.name_string())
-        if subprocess.call(output_name) != 0:
-            raise EnvironmentException('Executables created by Rust compiler %s are not runnable.' % self.name_string())
-
-    def get_dependency_gen_args(self, outfile):
-        return ['--dep-info', outfile]
-
-    def get_buildtype_args(self, buildtype):
-        return rust_buildtype_args[buildtype]
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
-
-    def get_sysroot(self):
-        cmd = self.exelist + ['--print', 'sysroot']
-        p, stdo, stde = Popen_safe(cmd)
-        return stdo.split('\n')[0]
-
-class SwiftCompiler(Compiler):
-    def __init__(self, exelist, version):
-        self.language = 'swift'
-        super().__init__(exelist, version)
-        self.version = version
-        self.id = 'llvm'
-        self.is_cross = False
-
-    def get_linker_exelist(self):
-        return self.exelist[:]
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def needs_static_linker(self):
-        return True
-
-    def get_werror_args(self):
-        return ['--fatal-warnings']
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return ['-emit-dependencies']
-
-    def depfile_for_object(self, objfile):
-        return os.path.splitext(objfile)[0] + '.' + self.get_depfile_suffix()
-
-    def get_depfile_suffix(self):
-        return 'd'
-
-    def get_output_args(self, target):
-        return ['-o', target]
-
-    def get_linker_output_args(self, target):
-        return ['-o', target]
-
-    def get_header_import_args(self, headername):
-        return ['-import-objc-header', headername]
-
-    def get_warn_args(self, level):
-        return []
-
-    def get_buildtype_args(self, buildtype):
-        return swift_buildtype_args[buildtype]
-
-    def get_buildtype_linker_args(self, buildtype):
-        return []
-
-    def get_std_exe_link_args(self):
-        return ['-emit-executable']
-
-    def get_module_args(self, modname):
-        return ['-module-name', modname]
-
-    def get_mod_gen_args(self):
-        return ['-emit-module']
-
-    def build_rpath_args(self, *args):
-        return [] # FIXME
-
-    def get_include_args(self, dirname):
-        return ['-I' + dirname]
-
-    def get_compile_only_args(self):
-        return ['-c']
-
-    def sanity_check(self, work_dir, environment):
-        src = 'swifttest.swift'
-        source_name = os.path.join(work_dir, src)
-        output_name = os.path.join(work_dir, 'swifttest')
-        with open(source_name, 'w') as ofile:
-            ofile.write('''print("Swift compilation is working.")
-''')
-        extra_flags = self.get_cross_extra_flags(environment, link=True)
-        pc = subprocess.Popen(self.exelist + extra_flags + ['-emit-executable', '-o', output_name, src], cwd=work_dir)
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('Swift compiler %s can not compile programs.' % self.name_string())
-        if subprocess.call(output_name) != 0:
-            raise EnvironmentException('Executables created by Swift compiler %s are not runnable.' % self.name_string())
-
-class DCompiler(Compiler):
-    def __init__(self, exelist, version, is_cross):
-        self.language = 'd'
-        super().__init__(exelist, version)
-        self.id = 'unknown'
-        self.is_cross = is_cross
-
-    def sanity_check(self, work_dir, environment):
-        source_name = os.path.join(work_dir, 'sanity.d')
-        output_name = os.path.join(work_dir, 'dtest')
-        with open(source_name, 'w') as ofile:
-            ofile.write('''void main() {
-}
-''')
-        pc = subprocess.Popen(self.exelist + self.get_output_args(output_name) + [source_name], cwd=work_dir)
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('D compiler %s can not compile programs.' % self.name_string())
-        if subprocess.call(output_name) != 0:
-            raise EnvironmentException('Executables created by D compiler %s are not runnable.' % self.name_string())
-
-    def needs_static_linker(self):
-        return True
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def get_linker_exelist(self):
-        return self.exelist[:]
-
-    def get_preprocess_only_args(self):
-        return ['-E']
-
-    def get_compile_only_args(self):
-        return ['-c']
-
-    def depfile_for_object(self, objfile):
-        return objfile + '.' + self.get_depfile_suffix()
-
-    def get_depfile_suffix(self):
-        return 'dep'
-
-    def get_pic_args(self):
-        return ['-fPIC']
-
-    def get_std_shared_lib_link_args(self):
-        return ['-shared']
-
-    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
-        # FIXME: Make this work for Windows, MacOS and cross-compiling
-        return get_gcc_soname_args(GCC_STANDARD, prefix, shlib_name, suffix, path, soversion, is_shared_module)
-
-    def get_unittest_args(self):
-        return ['-unittest']
-
-    def get_buildtype_linker_args(self, buildtype):
-        return []
-
-    def get_std_exe_link_args(self):
-        return []
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        # This method is to be used by LDC and DMD.
-        # GDC can deal with the verbatim flags.
-        if not rpath_paths and not install_rpath:
-            return []
-        paths = ':'.join([os.path.join(build_dir, p) for p in rpath_paths])
-        if len(paths) < len(install_rpath):
-            padding = 'X' * (len(install_rpath) - len(paths))
-            if not paths:
-                paths = padding
-            else:
-                paths = paths + ':' + padding
-        return ['-L-rpath={}'.format(paths)]
-
-    def _get_compiler_check_args(self, env, extra_args, dependencies, mode='compile'):
-        if extra_args is None:
-            extra_args = []
-        elif isinstance(extra_args, str):
-            extra_args = [extra_args]
-        if dependencies is None:
-            dependencies = []
-        elif not isinstance(dependencies, list):
-            dependencies = [dependencies]
-        # Collect compiler arguments
-        args = CompilerArgs(self)
-        for d in dependencies:
-            # Add compile flags needed by dependencies
-            args += d.get_compile_args()
-            if mode == 'link':
-                # Add link flags needed to find dependencies
-                args += d.get_link_args()
-
-        if mode == 'compile':
-            # Add DFLAGS from the env
-            args += env.coredata.external_args[self.language]
-        elif mode == 'link':
-            # Add LDFLAGS from the env
-            args += env.coredata.external_link_args[self.language]
-        # extra_args must override all other arguments, so we add them last
-        args += extra_args
-        return args
-
-    def compiles(self, code, env, extra_args=None, dependencies=None, mode='compile'):
-        args = self._get_compiler_check_args(env, extra_args, dependencies, mode)
-
-        with self.compile(code, args, mode) as p:
-            return p.returncode == 0
-
-    def has_multi_arguments(self, args, env):
-        return self.compiles('int i;\n', env, extra_args=args)
-
-    @classmethod
-    def translate_args_to_nongnu(cls, args):
-        dcargs = []
-        # Translate common arguments to flags the LDC/DMD compilers
-        # can understand.
-        # The flags might have been added by pkg-config files,
-        # and are therefore out of the user's control.
-        for arg in args:
-            if arg == '-pthread':
-                continue
-            if arg.startswith('-Wl,'):
-                linkargs = arg[arg.index(',') + 1:].split(',')
-                for la in linkargs:
-                    dcargs.append('-L' + la.strip())
-                continue
-            elif arg.startswith('-l'):
-                # translate library link flag
-                dcargs.append('-L' + arg)
-                continue
-            elif arg.startswith('-L/') or arg.startswith('-L./'):
-                # we need to handle cases where -L is set by e.g. a pkg-config
-                # setting to select a linker search path. We can however not
-                # unconditionally prefix '-L' with '-L' because the user might
-                # have set this flag too to do what it is intended to for this
-                # compiler (pass flag through to the linker)
-                # Hence, we guess here whether the flag was intended to pass
-                # a linker search path.
-                dcargs.append('-L' + arg)
-                continue
-            dcargs.append(arg)
-
-        return dcargs
-
-class GnuDCompiler(DCompiler):
-    def __init__(self, exelist, version, is_cross):
-        DCompiler.__init__(self, exelist, version, is_cross)
-        self.id = 'gcc'
-        default_warn_args = ['-Wall', '-Wdeprecated']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-        self.base_options = ['b_colorout', 'b_sanitize', 'b_staticpic']
-
-    def get_colorout_args(self, colortype):
-        if mesonlib.version_compare(self.version, '>=4.9.0'):
-            return gnu_color_args[colortype][:]
-        return []
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return ['-fmake-deps=' + outfile]
-
-    def get_output_args(self, target):
-        return ['-o', target]
-
-    def get_linker_output_args(self, target):
-        return ['-o', target]
-
-    def get_include_args(self, path, is_system):
-        return ['-I' + path]
-
-    def get_warn_args(self, level):
-        return self.warn_args[level]
-
-    def get_werror_args(self):
-        return ['-Werror']
-
-    def get_linker_search_args(self, dirname):
-        return ['-L' + dirname]
-
-    def get_buildtype_args(self, buildtype):
-        return d_gdc_buildtype_args[buildtype]
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
-
-    def get_unittest_args(self):
-        return ['-funittest']
-
-class LLVMDCompiler(DCompiler):
-    def __init__(self, exelist, version, is_cross):
-        DCompiler.__init__(self, exelist, version, is_cross)
-        self.id = 'llvm'
-        self.base_options = ['b_coverage', 'b_colorout']
-
-    def get_colorout_args(self, colortype):
-        if colortype == 'always':
-            return ['-enable-color']
-        return []
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        # LDC using the -deps flag returns a non-Makefile dependency-info file, which
-        # the backends can not use. So we disable this feature for now.
-        return []
-
-    def get_output_args(self, target):
-        return ['-of', target]
-
-    def get_linker_output_args(self, target):
-        return ['-of', target]
-
-    def get_include_args(self, path, is_system):
-        return ['-I' + path]
-
-    def get_warn_args(self, level):
-        if level == '2' or level == '3':
-            return ['-wi', '-dw']
-        else:
-            return ['-wi']
-
-    def get_werror_args(self):
-        return ['-w']
-
-    def get_coverage_args(self):
-        return ['-cov']
-
-    def get_buildtype_args(self, buildtype):
-        return d_ldc_buildtype_args[buildtype]
-
-    def get_pic_args(self):
-        return ['-relocation-model=pic']
-
-    def get_linker_search_args(self, dirname):
-        # -L is recognized as "add this to the search path" by the linker,
-        # while the compiler recognizes it as "pass to linker". So, the first
-        # -L is for the compiler, telling it to pass the second -L to the linker.
-        return ['-L-L' + dirname]
-
-    @classmethod
-    def unix_args_to_native(cls, args):
-        return cls.translate_args_to_nongnu(args)
-
-class DmdDCompiler(DCompiler):
-    def __init__(self, exelist, version, is_cross):
-        DCompiler.__init__(self, exelist, version, is_cross)
-        self.id = 'dmd'
-        self.base_options = ['b_coverage', 'b_colorout']
-
-    def get_colorout_args(self, colortype):
-        if colortype == 'always':
-            return ['-color=on']
-        return []
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        # LDC using the -deps flag returns a non-Makefile dependency-info file, which
-        # the backends can not use. So we disable this feature for now.
-        return []
-
-    def get_output_args(self, target):
-        return ['-of' + target]
-
-    def get_werror_args(self):
-        return ['-w']
-
-    def get_linker_output_args(self, target):
-        return ['-of' + target]
-
-    def get_include_args(self, path, is_system):
-        return ['-I' + path]
-
-    def get_warn_args(self, level):
-        return ['-wi']
-
-    def get_coverage_args(self):
-        return ['-cov']
-
-    def get_linker_search_args(self, dirname):
-        # -L is recognized as "add this to the search path" by the linker,
-        # while the compiler recognizes it as "pass to linker". So, the first
-        # -L is for the compiler, telling it to pass the second -L to the linker.
-        return ['-L-L' + dirname]
-
-    def get_buildtype_args(self, buildtype):
-        return d_dmd_buildtype_args[buildtype]
-
-    def get_std_shared_lib_link_args(self):
-        return ['-shared', '-defaultlib=libphobos2.so']
-
-    @classmethod
-    def unix_args_to_native(cls, args):
-        return cls.translate_args_to_nongnu(args)
-
-class VisualStudioCCompiler(CCompiler):
-    std_warn_args = ['/W3']
-    std_opt_args = ['/O2']
-
-    def __init__(self, exelist, version, is_cross, exe_wrap):
-        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-        self.id = 'msvc'
-        # /showIncludes is needed for build dependency tracking in Ninja
-        # See: https://ninja-build.org/manual.html#_deps
-        self.always_args = ['/nologo', '/showIncludes']
-        self.warn_args = {'1': ['/W2'],
-                          '2': ['/W3'],
-                          '3': ['/W4']}
-        self.base_options = ['b_pch'] # FIXME add lto, pgo and the like
-
-    # Override CCompiler.get_always_args
-    def get_always_args(self):
-        return self.always_args
-
-    def get_linker_debug_crt_args(self):
-        """
-        Arguments needed to select a debug crt for the linker
-
-        Sometimes we need to manually select the CRT (C runtime) to use with
-        MSVC. One example is when trying to link with static libraries since
-        MSVC won't auto-select a CRT for us in that case and will error out
-        asking us to select one.
-        """
-        return ['/MDd']
-
-    def get_buildtype_args(self, buildtype):
-        return msvc_buildtype_args[buildtype]
-
-    def get_buildtype_linker_args(self, buildtype):
-        return msvc_buildtype_linker_args[buildtype]
-
-    def get_pch_suffix(self):
-        return 'pch'
-
-    def get_pch_name(self, header):
-        chopped = os.path.split(header)[-1].split('.')[:-1]
-        chopped.append(self.get_pch_suffix())
-        pchname = '.'.join(chopped)
-        return pchname
-
-    def get_pch_use_args(self, pch_dir, header):
-        base = os.path.split(header)[-1]
-        pchname = self.get_pch_name(header)
-        return ['/FI' + base, '/Yu' + base, '/Fp' + os.path.join(pch_dir, pchname)]
-
-    def get_preprocess_only_args(self):
-        return ['/EP']
-
-    def get_compile_only_args(self):
-        return ['/c']
-
-    def get_no_optimization_args(self):
-        return ['/Od']
-
-    def get_output_args(self, target):
-        if target.endswith('.exe'):
-            return ['/Fe' + target]
-        return ['/Fo' + target]
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return []
-
-    def get_linker_exelist(self):
-        return ['link'] # FIXME, should have same path as compiler.
-
-    def get_linker_always_args(self):
-        return ['/nologo']
-
-    def get_linker_output_args(self, outputname):
-        return ['/OUT:' + outputname]
-
-    def get_linker_search_args(self, dirname):
-        return ['/LIBPATH:' + dirname]
-
-    def get_pic_args(self):
-        return [] # PIC is handled by the loader on Windows
-
-    def get_std_shared_lib_link_args(self):
-        return ['/DLL']
-
-    def gen_vs_module_defs_args(self, defsfile):
-        if not isinstance(defsfile, str):
-            raise RuntimeError('Module definitions file should be str')
-        # With MSVC, DLLs only export symbols that are explicitly exported,
-        # so if a module defs file is specified, we use that to export symbols
-        return ['/DEF:' + defsfile]
-
-    def gen_pch_args(self, header, source, pchname):
-        objname = os.path.splitext(pchname)[0] + '.obj'
-        return objname, ['/Yc' + header, '/Fp' + pchname, '/Fo' + objname]
-
-    def gen_import_library_args(self, implibname):
-        "The name of the outputted import library"
-        return ['/IMPLIB:' + implibname]
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return []
-
-    # FIXME, no idea what these should be.
-    def thread_flags(self):
-        return []
-
-    def thread_link_flags(self):
-        return []
-
-    def get_options(self):
-        return {'c_winlibs': coredata.UserStringArrayOption('c_winlibs',
-                                                            'Windows libs to link against.',
-                                                            msvc_winlibs)
-                }
-
-    def get_option_link_args(self, options):
-        return options['c_winlibs'].value[:]
-
-    @classmethod
-    def unix_args_to_native(cls, args):
-        result = []
-        for i in args:
-            # -mms-bitfields is specific to MinGW-GCC
-            # -pthread is only valid for GCC
-            if i in ('-mms-bitfields', '-pthread'):
-                continue
-            if i.startswith('-L'):
-                i = '/LIBPATH:' + i[2:]
-            # Translate GNU-style -lfoo library name to the import library
-            elif i.startswith('-l'):
-                name = i[2:]
-                if name in ('m', 'c', 'pthread'):
-                    # With MSVC, these are provided by the C runtime which is
-                    # linked in by default
-                    continue
-                else:
-                    i = name + '.lib'
-            # -pthread in link flags is only used on Linux
-            elif i == '-pthread':
-                continue
-            result.append(i)
-        return result
-
-    def get_werror_args(self):
-        return ['/WX']
-
-    def get_include_args(self, path, is_system):
-        if path == '':
-            path = '.'
-        # msvc does not have a concept of system header dirs.
-        return ['-I' + path]
-
-    # Visual Studio is special. It ignores some arguments it does not
-    # understand and you can't tell it to error out on those.
-    # http://stackoverflow.com/questions/15259720/how-can-i-make-the-microsoft-c-compiler-treat-unknown-flags-as-errors-rather-t
-    def has_multi_arguments(self, args, env):
-        warning_text = '9002'
-        code = 'int i;\n'
-        (fd, srcname) = tempfile.mkstemp(suffix='.' + self.default_suffix)
-        os.close(fd)
-        with open(srcname, 'w') as ofile:
-            ofile.write(code)
-        # Read c_args/cpp_args/etc from the cross-info file (if needed)
-        extra_args = self.get_cross_extra_flags(env, link=False)
-        extra_args += self.get_compile_only_args()
-        commands = self.exelist + args + extra_args + [srcname]
-        mlog.debug('Running VS compile:')
-        mlog.debug('Command line: ', ' '.join(commands))
-        mlog.debug('Code:\n', code)
-        p, stdo, stde = Popen_safe(commands, cwd=os.path.split(srcname)[0])
-        if p.returncode != 0:
-            return False
-        return not(warning_text in stde or warning_text in stdo)
-
-    def get_compile_debugfile_args(self, rel_obj, pch=False):
-        pdbarr = rel_obj.split('.')[:-1]
-        pdbarr += ['pdb']
-        args = ['/Fd' + '.'.join(pdbarr)]
-        # When generating a PDB file with PCH, all compile commands write
-        # to the same PDB file. Hence, we need to serialize the PDB
-        # writes using /FS since we do parallel builds. This slows down the
-        # build obviously, which is why we only do this when PCH is on.
-        # This was added in Visual Studio 2013 (MSVC 18.0). Before that it was
-        # always on: https://msdn.microsoft.com/en-us/library/dn502518.aspx
-        if pch and mesonlib.version_compare(self.version, '>=18.0'):
-            args = ['/FS'] + args
-        return args
-
-    def get_link_debugfile_args(self, targetfile):
-        pdbarr = targetfile.split('.')[:-1]
-        pdbarr += ['pdb']
-        return ['/DEBUG', '/PDB:' + '.'.join(pdbarr)]
-
-    def get_link_whole_for(self, args):
-        # Only since VS2015
-        if not isinstance(args, list):
-            args = [args]
-        return ['/WHOLEARCHIVE:' + x for x in args]
-
-
-class VisualStudioCPPCompiler(VisualStudioCCompiler, CPPCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrap):
-        self.language = 'cpp'
-        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-        VisualStudioCCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-        self.base_options = ['b_pch'] # FIXME add lto, pgo and the like
-
-    def get_options(self):
-        return {'cpp_eh': coredata.UserComboOption('cpp_eh',
-                                                   'C++ exception handling type.',
-                                                   ['none', 'a', 's', 'sc'],
-                                                   'sc'),
-                'cpp_winlibs': coredata.UserStringArrayOption('cpp_winlibs',
-                                                              'Windows libs to link against.',
-                                                              msvc_winlibs)
-                }
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['cpp_eh']
-        if std.value != 'none':
-            args.append('/EH' + std.value)
-        return args
-
-    def get_option_link_args(self, options):
-        return options['cpp_winlibs'].value[:]
-
-    def get_compiler_check_args(self):
-        # Visual Studio C++ compiler doesn't support -fpermissive,
-        # so just use the plain C args.
-        return super(VisualStudioCCompiler, self).get_compiler_check_args()
 
 GCC_STANDARD = 0
 GCC_OSX = 1
@@ -2591,102 +930,6 @@ class GnuCompiler:
             return ['-mwindows']
         return []
 
-class GnuCCompiler(GnuCompiler, CCompiler):
-    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
-        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        GnuCompiler.__init__(self, gcc_type, defines)
-        default_warn_args = ['-Wall', '-Winvalid-pch']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-    def get_options(self):
-        opts = {'c_std': coredata.UserComboOption('c_std', 'C language standard to use',
-                                                  ['none', 'c89', 'c99', 'c11',
-                                                   'gnu89', 'gnu99', 'gnu11'],
-                                                  'none')}
-        if self.gcc_type == GCC_MINGW:
-            opts.update({
-                'c_winlibs': coredata.UserStringArrayOption('c_winlibs', 'Standard Win libraries to link against',
-                                                            gnu_winlibs), })
-        return opts
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['c_std']
-        if std.value != 'none':
-            args.append('-std=' + std.value)
-        return args
-
-    def get_option_link_args(self, options):
-        if self.gcc_type == GCC_MINGW:
-            return options['c_winlibs'].value[:]
-        return []
-
-    def get_std_shared_lib_link_args(self):
-        return ['-shared']
-
-
-class GnuCPPCompiler(GnuCompiler, CPPCompiler):
-
-    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrap, defines):
-        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-        GnuCompiler.__init__(self, gcc_type, defines)
-        default_warn_args = ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-    def get_options(self):
-        opts = {'cpp_std': coredata.UserComboOption('cpp_std', 'C++ language standard to use',
-                                                    ['none', 'c++03', 'c++11', 'c++14', 'c++1z',
-                                                     'gnu++03', 'gnu++11', 'gnu++14', 'gnu++1z'],
-                                                    'none'),
-                'cpp_debugstl': coredata.UserBooleanOption('cpp_debugstl',
-                                                           'STL debug mode',
-                                                           False)}
-        if self.gcc_type == GCC_MINGW:
-            opts.update({
-                'cpp_winlibs': coredata.UserStringArrayOption('cpp_winlibs', 'Standard Win libraries to link against',
-                                                              gnu_winlibs), })
-        return opts
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['cpp_std']
-        if std.value != 'none':
-            args.append('-std=' + std.value)
-        if options['cpp_debugstl'].value:
-            args.append('-D_GLIBCXX_DEBUG=1')
-        return args
-
-    def get_option_link_args(self, options):
-        if self.gcc_type == GCC_MINGW:
-            return options['cpp_winlibs'].value[:]
-        return []
-
-
-class GnuObjCCompiler(GnuCompiler, ObjCCompiler):
-
-    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
-        ObjCCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        GnuCompiler.__init__(self, gcc_type, defines)
-        default_warn_args = ['-Wall', '-Winvalid-pch']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-class GnuObjCPPCompiler(GnuCompiler, ObjCPPCompiler):
-
-    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
-        ObjCPPCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        GnuCompiler.__init__(self, gcc_type, defines)
-        default_warn_args = ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-
 class ClangCompiler:
     def __init__(self, clang_type):
         self.id = 'clang'
@@ -2765,70 +1008,6 @@ class ClangCompiler:
         return ['-Wl,--whole-archive'] + args + ['-Wl,--no-whole-archive']
 
 
-class ClangCCompiler(ClangCompiler, CCompiler):
-    def __init__(self, exelist, version, clang_type, is_cross, exe_wrapper=None):
-        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        ClangCompiler.__init__(self, clang_type)
-        default_warn_args = ['-Wall', '-Winvalid-pch']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-    def get_options(self):
-        return {'c_std': coredata.UserComboOption('c_std', 'C language standard to use',
-                                                  ['none', 'c89', 'c99', 'c11',
-                                                   'gnu89', 'gnu99', 'gnu11'],
-                                                  'none')}
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['c_std']
-        if std.value != 'none':
-            args.append('-std=' + std.value)
-        return args
-
-    def get_option_link_args(self, options):
-        return []
-
-
-class ClangCPPCompiler(ClangCompiler, CPPCompiler):
-    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
-        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        ClangCompiler.__init__(self, cltype)
-        default_warn_args = ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-    def get_options(self):
-        return {'cpp_std': coredata.UserComboOption('cpp_std', 'C++ language standard to use',
-                                                    ['none', 'c++03', 'c++11', 'c++14', 'c++1z',
-                                                     'gnu++11', 'gnu++14', 'gnu++1z'],
-                                                    'none')}
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['cpp_std']
-        if std.value != 'none':
-            args.append('-std=' + std.value)
-        return args
-
-    def get_option_link_args(self, options):
-        return []
-
-class ClangObjCCompiler(ClangCompiler, GnuObjCCompiler):
-    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
-        GnuObjCCompiler.__init__(self, exelist, version, cltype, is_cross, exe_wrapper)
-        ClangCompiler.__init__(self, cltype)
-        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
-
-class ClangObjCPPCompiler(ClangCompiler, GnuObjCPPCompiler):
-    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
-        GnuObjCPPCompiler.__init__(self, exelist, version, cltype, is_cross, exe_wrapper)
-        ClangCompiler.__init__(self, cltype)
-        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
-
-
 # Tested on linux for ICC 14.0.3, 15.0.6, 16.0.4, 17.0.1
 class IntelCompiler:
     def __init__(self, icc_type):
@@ -2878,336 +1057,3 @@ class IntelCompiler:
         # if self.icc_type == ICC_OSX:
         #     return ['-bundle']
         return ['-shared']
-
-
-class IntelCCompiler(IntelCompiler, CCompiler):
-    def __init__(self, exelist, version, icc_type, is_cross, exe_wrapper=None):
-        CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        IntelCompiler.__init__(self, icc_type)
-        self.lang_header = 'c-header'
-        default_warn_args = ['-Wall', '-w3', '-diag-disable:remark', '-Wpch-messages']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-    def get_options(self):
-        c_stds = ['c89', 'c99']
-        g_stds = ['gnu89', 'gnu99']
-        if mesonlib.version_compare(self.version, '>=16.0.0'):
-            c_stds += ['c11']
-        opts = {'c_std': coredata.UserComboOption('c_std', 'C language standard to use',
-                                                  ['none'] + c_stds + g_stds,
-                                                  'none')}
-        return opts
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['c_std']
-        if std.value != 'none':
-            args.append('-std=' + std.value)
-        return args
-
-    def get_std_shared_lib_link_args(self):
-        return ['-shared']
-
-    def has_multi_arguments(self, args, env):
-        return super().has_multi_arguments(args + ['-diag-error', '10006'], env)
-
-
-class IntelCPPCompiler(IntelCompiler, CPPCompiler):
-    def __init__(self, exelist, version, icc_type, is_cross, exe_wrap):
-        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
-        IntelCompiler.__init__(self, icc_type)
-        self.lang_header = 'c++-header'
-        default_warn_args = ['-Wall', '-w3', '-diag-disable:remark',
-                             '-Wpch-messages', '-Wnon-virtual-dtor']
-        self.warn_args = {'1': default_warn_args,
-                          '2': default_warn_args + ['-Wextra'],
-                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-
-    def get_options(self):
-        c_stds = []
-        g_stds = ['gnu++98']
-        if mesonlib.version_compare(self.version, '>=15.0.0'):
-            c_stds += ['c++11', 'c++14']
-            g_stds += ['gnu++11']
-        if mesonlib.version_compare(self.version, '>=16.0.0'):
-            c_stds += ['c++17']
-        if mesonlib.version_compare(self.version, '>=17.0.0'):
-            g_stds += ['gnu++14']
-        opts = {'cpp_std': coredata.UserComboOption('cpp_std', 'C++ language standard to use',
-                                                    ['none'] + c_stds + g_stds,
-                                                    'none'),
-                'cpp_debugstl': coredata.UserBooleanOption('cpp_debugstl',
-                                                           'STL debug mode',
-                                                           False)}
-        return opts
-
-    def get_option_compile_args(self, options):
-        args = []
-        std = options['cpp_std']
-        if std.value != 'none':
-            args.append('-std=' + std.value)
-        if options['cpp_debugstl'].value:
-            args.append('-D_GLIBCXX_DEBUG=1')
-        return args
-
-    def get_option_link_args(self, options):
-        return []
-
-    def has_multi_arguments(self, args, env):
-        return super().has_multi_arguments(args + ['-diag-error', '10006'], env)
-
-
-class FortranCompiler(Compiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        self.language = 'fortran'
-        super().__init__(exelist, version)
-        self.is_cross = is_cross
-        self.exe_wrapper = exe_wrapper
-        # Not really correct but I don't have Fortran compilers to test with. Sorry.
-        self.gcc_type = GCC_STANDARD
-        self.id = "IMPLEMENTATION CLASSES MUST SET THIS"
-
-    def name_string(self):
-        return ' '.join(self.exelist)
-
-    def get_pic_args(self):
-        if self.gcc_type in (GCC_CYGWIN, GCC_MINGW, GCC_OSX):
-            return [] # On Window and OS X, pic is always on.
-        return ['-fPIC']
-
-    def get_std_shared_lib_link_args(self):
-        return ['-shared']
-
-    def needs_static_linker(self):
-        return True
-
-    def sanity_check(self, work_dir, environment):
-        source_name = os.path.join(work_dir, 'sanitycheckf.f90')
-        binary_name = os.path.join(work_dir, 'sanitycheckf')
-        with open(source_name, 'w') as ofile:
-            ofile.write('''program prog
-     print *, "Fortran compilation is working."
-end program prog
-''')
-        extra_flags = self.get_cross_extra_flags(environment, link=True)
-        pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
-        pc.wait()
-        if pc.returncode != 0:
-            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
-        if self.is_cross:
-            if self.exe_wrapper is None:
-                # Can't check if the binaries run so we have to assume they do
-                return
-            cmdlist = self.exe_wrapper + [binary_name]
-        else:
-            cmdlist = [binary_name]
-        pe = subprocess.Popen(cmdlist, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
-        pe.wait()
-        if pe.returncode != 0:
-            raise EnvironmentException('Executables created by Fortran compiler %s are not runnable.' % self.name_string())
-
-    def get_std_warn_args(self, level):
-        return FortranCompiler.std_warn_args
-
-    def get_buildtype_args(self, buildtype):
-        return gnulike_buildtype_args[buildtype]
-
-    def get_buildtype_linker_args(self, buildtype):
-        if mesonlib.is_osx():
-            return apple_buildtype_linker_args[buildtype]
-        return gnulike_buildtype_linker_args[buildtype]
-
-    def split_shlib_to_parts(self, fname):
-        return os.path.split(fname)[0], fname
-
-    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
-        return get_gcc_soname_args(self.gcc_type, prefix, shlib_name, suffix, path, soversion, is_shared_module)
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        # Disabled until this is fixed:
-        # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62162
-        # return ['-cpp', '-MMD', '-MQ', outtarget]
-        return []
-
-    def get_output_args(self, target):
-        return ['-o', target]
-
-    def get_preprocess_only_args(self):
-        return ['-E']
-
-    def get_compile_only_args(self):
-        return ['-c']
-
-    def get_linker_exelist(self):
-        return self.exelist[:]
-
-    def get_linker_output_args(self, outputname):
-        return ['-o', outputname]
-
-    def get_include_args(self, path, is_system):
-        return ['-I' + path]
-
-    def get_module_outdir_args(self, path):
-        return ['-J' + path]
-
-    def depfile_for_object(self, objfile):
-        return objfile + '.' + self.get_depfile_suffix()
-
-    def get_depfile_suffix(self):
-        return 'd'
-
-    def get_std_exe_link_args(self):
-        return []
-
-    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
-        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
-
-    def module_name_to_filename(self, module_name):
-        return module_name.lower() + '.mod'
-
-    def get_warn_args(self, level):
-        return ['-Wall']
-
-    def get_no_warn_args(self):
-        return ['-w']
-
-
-class GnuFortranCompiler(FortranCompiler):
-    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.gcc_type = gcc_type
-        self.defines = defines or {}
-        self.id = 'gcc'
-
-    def has_builtin_define(self, define):
-        return define in self.defines
-
-    def get_builtin_define(self, define):
-        if define in self.defines:
-            return self.defines[define]
-
-    def get_always_args(self):
-        return ['-pipe']
-
-    def gen_import_library_args(self, implibname):
-        """
-        The name of the outputted import library
-
-        Used only on Windows
-        """
-        return ['-Wl,--out-implib=' + implibname]
-
-class G95FortranCompiler(FortranCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.id = 'g95'
-
-    def get_module_outdir_args(self, path):
-        return ['-fmod=' + path]
-
-    def get_always_args(self):
-        return ['-pipe']
-
-    def get_no_warn_args(self):
-        # FIXME: Confirm that there's no compiler option to disable all warnings
-        return []
-
-    def gen_import_library_args(self, implibname):
-        """
-        The name of the outputted import library
-
-        Used only on Windows
-        """
-        return ['-Wl,--out-implib=' + implibname]
-
-class SunFortranCompiler(FortranCompiler):
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.id = 'sun'
-
-    def get_dependency_gen_args(self, outtarget, outfile):
-        return ['-fpp']
-
-    def get_always_args(self):
-        return []
-
-    def get_warn_args(self, level):
-        return []
-
-    def get_module_outdir_args(self, path):
-        return ['-moddir=' + path]
-
-class IntelFortranCompiler(IntelCompiler, FortranCompiler):
-    std_warn_args = ['-warn', 'all']
-
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        self.file_suffixes = ('f90', 'f', 'for', 'ftn', 'fpp')
-        FortranCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
-        # FIXME: Add support for OS X and Windows in detect_fortran_compiler so
-        # we are sent the type of compiler
-        IntelCompiler.__init__(self, ICC_STANDARD)
-        self.id = 'intel'
-
-    def get_module_outdir_args(self, path):
-        return ['-module', path]
-
-    def get_warn_args(self, level):
-        return IntelFortranCompiler.std_warn_args
-
-class PathScaleFortranCompiler(FortranCompiler):
-    std_warn_args = ['-fullwarn']
-
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.id = 'pathscale'
-
-    def get_module_outdir_args(self, path):
-        return ['-module', path]
-
-    def get_std_warn_args(self, level):
-        return PathScaleFortranCompiler.std_warn_args
-
-class PGIFortranCompiler(FortranCompiler):
-    std_warn_args = ['-Minform=inform']
-
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.id = 'pgi'
-
-    def get_module_outdir_args(self, path):
-        return ['-module', path]
-
-    def get_warn_args(self, level):
-        return PGIFortranCompiler.std_warn_args
-
-    def get_no_warn_args(self):
-        return ['-silent']
-
-
-class Open64FortranCompiler(FortranCompiler):
-    std_warn_args = ['-fullwarn']
-
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.id = 'open64'
-
-    def get_module_outdir_args(self, path):
-        return ['-module', path]
-
-    def get_warn_args(self, level):
-        return Open64FortranCompiler.std_warn_args
-
-class NAGFortranCompiler(FortranCompiler):
-    std_warn_args = []
-
-    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
-        super().__init__(exelist, version, is_cross, exe_wrapper=None)
-        self.id = 'nagfor'
-
-    def get_module_outdir_args(self, path):
-        return ['-mdir', path]
-
-    def get_warn_args(self, level):
-        return NAGFortranCompiler.std_warn_args
diff --git a/mesonbuild/compilers/cpp.py b/mesonbuild/compilers/cpp.py
new file mode 100644
index 0000000..6d50e57
--- /dev/null
+++ b/mesonbuild/compilers/cpp.py
@@ -0,0 +1,202 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from .. import coredata
+from ..mesonlib import version_compare
+
+from .c import CCompiler, VisualStudioCCompiler
+from .compilers import (
+    GCC_MINGW,
+    gnu_winlibs,
+    msvc_winlibs,
+    ClangCompiler,
+    GnuCompiler,
+    IntelCompiler,
+)
+
+class CPPCompiler(CCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrap):
+        # If a child ObjCPP class has already set it, don't set it ourselves
+        if not hasattr(self, 'language'):
+            self.language = 'cpp'
+        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+
+    def get_no_stdinc_args(self):
+        return ['-nostdinc++']
+
+    def sanity_check(self, work_dir, environment):
+        code = 'class breakCCompiler;int main(int argc, char **argv) { return 0; }\n'
+        return self.sanity_check_impl(work_dir, environment, 'sanitycheckcpp.cc', code)
+
+    def get_compiler_check_args(self):
+        # -fpermissive allows non-conforming code to compile which is necessary
+        # for many C++ checks. Particularly, the has_header_symbol check is
+        # too strict without this and always fails.
+        return super().get_compiler_check_args() + ['-fpermissive']
+
+    def has_header_symbol(self, hname, symbol, prefix, env, extra_args=None, dependencies=None):
+        # Check if it's a C-like symbol
+        if super().has_header_symbol(hname, symbol, prefix, env, extra_args, dependencies):
+            return True
+        # Check if it's a class or a template
+        if extra_args is None:
+            extra_args = []
+        fargs = {'prefix': prefix, 'header': hname, 'symbol': symbol}
+        t = '''{prefix}
+        #include <{header}>
+        using {symbol};
+        int main () {{ return 0; }}'''
+        return self.compiles(t.format(**fargs), env, extra_args, dependencies)
+
+
+class ClangCPPCompiler(ClangCompiler, CPPCompiler):
+    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
+        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        ClangCompiler.__init__(self, cltype)
+        default_warn_args = ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+    def get_options(self):
+        return {'cpp_std': coredata.UserComboOption('cpp_std', 'C++ language standard to use',
+                                                    ['none', 'c++03', 'c++11', 'c++14', 'c++1z',
+                                                     'gnu++11', 'gnu++14', 'gnu++1z'],
+                                                    'none')}
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['cpp_std']
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        return args
+
+    def get_option_link_args(self, options):
+        return []
+
+
+class GnuCPPCompiler(GnuCompiler, CPPCompiler):
+    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrap, defines):
+        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+        GnuCompiler.__init__(self, gcc_type, defines)
+        default_warn_args = ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+    def get_options(self):
+        opts = {'cpp_std': coredata.UserComboOption('cpp_std', 'C++ language standard to use',
+                                                    ['none', 'c++03', 'c++11', 'c++14', 'c++1z',
+                                                     'gnu++03', 'gnu++11', 'gnu++14', 'gnu++1z'],
+                                                    'none'),
+                'cpp_debugstl': coredata.UserBooleanOption('cpp_debugstl',
+                                                           'STL debug mode',
+                                                           False)}
+        if self.gcc_type == GCC_MINGW:
+            opts.update({
+                'cpp_winlibs': coredata.UserStringArrayOption('cpp_winlibs', 'Standard Win libraries to link against',
+                                                              gnu_winlibs), })
+        return opts
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['cpp_std']
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        if options['cpp_debugstl'].value:
+            args.append('-D_GLIBCXX_DEBUG=1')
+        return args
+
+    def get_option_link_args(self, options):
+        if self.gcc_type == GCC_MINGW:
+            return options['cpp_winlibs'].value[:]
+        return []
+
+
+class IntelCPPCompiler(IntelCompiler, CPPCompiler):
+    def __init__(self, exelist, version, icc_type, is_cross, exe_wrap):
+        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+        IntelCompiler.__init__(self, icc_type)
+        self.lang_header = 'c++-header'
+        default_warn_args = ['-Wall', '-w3', '-diag-disable:remark',
+                             '-Wpch-messages', '-Wnon-virtual-dtor']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+    def get_options(self):
+        c_stds = []
+        g_stds = ['gnu++98']
+        if version_compare(self.version, '>=15.0.0'):
+            c_stds += ['c++11', 'c++14']
+            g_stds += ['gnu++11']
+        if version_compare(self.version, '>=16.0.0'):
+            c_stds += ['c++17']
+        if version_compare(self.version, '>=17.0.0'):
+            g_stds += ['gnu++14']
+        opts = {'cpp_std': coredata.UserComboOption('cpp_std', 'C++ language standard to use',
+                                                    ['none'] + c_stds + g_stds,
+                                                    'none'),
+                'cpp_debugstl': coredata.UserBooleanOption('cpp_debugstl',
+                                                           'STL debug mode',
+                                                           False)}
+        return opts
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['cpp_std']
+        if std.value != 'none':
+            args.append('-std=' + std.value)
+        if options['cpp_debugstl'].value:
+            args.append('-D_GLIBCXX_DEBUG=1')
+        return args
+
+    def get_option_link_args(self, options):
+        return []
+
+    def has_multi_arguments(self, args, env):
+        return super().has_multi_arguments(args + ['-diag-error', '10006'], env)
+
+
+class VisualStudioCPPCompiler(VisualStudioCCompiler, CPPCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrap):
+        self.language = 'cpp'
+        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+        VisualStudioCCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+        self.base_options = ['b_pch'] # FIXME add lto, pgo and the like
+
+    def get_options(self):
+        return {'cpp_eh': coredata.UserComboOption('cpp_eh',
+                                                   'C++ exception handling type.',
+                                                   ['none', 'a', 's', 'sc'],
+                                                   'sc'),
+                'cpp_winlibs': coredata.UserStringArrayOption('cpp_winlibs',
+                                                              'Windows libs to link against.',
+                                                              msvc_winlibs)
+                }
+
+    def get_option_compile_args(self, options):
+        args = []
+        std = options['cpp_eh']
+        if std.value != 'none':
+            args.append('/EH' + std.value)
+        return args
+
+    def get_option_link_args(self, options):
+        return options['cpp_winlibs'].value[:]
+
+    def get_compiler_check_args(self):
+        # Visual Studio C++ compiler doesn't support -fpermissive,
+        # so just use the plain C args.
+        return super(VisualStudioCCompiler, self).get_compiler_check_args()
diff --git a/mesonbuild/compilers/cs.py b/mesonbuild/compilers/cs.py
new file mode 100644
index 0000000..c65a539
--- /dev/null
+++ b/mesonbuild/compilers/cs.py
@@ -0,0 +1,106 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path, subprocess
+
+from ..mesonlib import EnvironmentException
+
+from .compilers import Compiler, mono_buildtype_args
+
+class MonoCompiler(Compiler):
+    def __init__(self, exelist, version):
+        self.language = 'cs'
+        super().__init__(exelist, version)
+        self.id = 'mono'
+        self.monorunner = 'mono'
+
+    def get_output_args(self, fname):
+        return ['-out:' + fname]
+
+    def get_link_args(self, fname):
+        return ['-r:' + fname]
+
+    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
+        return []
+
+    def get_werror_args(self):
+        return ['-warnaserror']
+
+    def split_shlib_to_parts(self, fname):
+        return None, fname
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return []
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return []
+
+    def get_linker_exelist(self):
+        return self.exelist[:]
+
+    def get_compile_only_args(self):
+        return []
+
+    def get_linker_output_args(self, outputname):
+        return []
+
+    def get_coverage_args(self):
+        return []
+
+    def get_coverage_link_args(self):
+        return []
+
+    def get_std_exe_link_args(self):
+        return []
+
+    def get_include_args(self, path):
+        return []
+
+    def get_pic_args(self):
+        return []
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def get_pch_use_args(self, pch_dir, header):
+        return []
+
+    def get_pch_name(self, header_name):
+        return ''
+
+    def sanity_check(self, work_dir, environment):
+        src = 'sanity.cs'
+        obj = 'sanity.exe'
+        source_name = os.path.join(work_dir, src)
+        with open(source_name, 'w') as ofile:
+            ofile.write('''public class Sanity {
+    static public void Main () {
+    }
+}
+''')
+        pc = subprocess.Popen(self.exelist + [src], cwd=work_dir)
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('Mono compiler %s can not compile programs.' % self.name_string())
+        cmdlist = [self.monorunner, obj]
+        pe = subprocess.Popen(cmdlist, cwd=work_dir)
+        pe.wait()
+        if pe.returncode != 0:
+            raise EnvironmentException('Executables created by Mono compiler %s are not runnable.' % self.name_string())
+
+    def needs_static_linker(self):
+        return False
+
+    def get_buildtype_args(self, buildtype):
+        return mono_buildtype_args[buildtype]
diff --git a/mesonbuild/compilers/d.py b/mesonbuild/compilers/d.py
new file mode 100644
index 0000000..e1d534f
--- /dev/null
+++ b/mesonbuild/compilers/d.py
@@ -0,0 +1,324 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path, subprocess
+
+from ..mesonlib import EnvironmentException, version_compare
+
+from .compilers import (
+    GCC_STANDARD,
+    d_dmd_buildtype_args,
+    d_gdc_buildtype_args,
+    d_ldc_buildtype_args,
+    get_gcc_soname_args,
+    gnu_color_args,
+    Compiler,
+    CompilerArgs,
+)
+
+class DCompiler(Compiler):
+    def __init__(self, exelist, version, is_cross):
+        self.language = 'd'
+        super().__init__(exelist, version)
+        self.id = 'unknown'
+        self.is_cross = is_cross
+
+    def sanity_check(self, work_dir, environment):
+        source_name = os.path.join(work_dir, 'sanity.d')
+        output_name = os.path.join(work_dir, 'dtest')
+        with open(source_name, 'w') as ofile:
+            ofile.write('''void main() {
+}
+''')
+        pc = subprocess.Popen(self.exelist + self.get_output_args(output_name) + [source_name], cwd=work_dir)
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('D compiler %s can not compile programs.' % self.name_string())
+        if subprocess.call(output_name) != 0:
+            raise EnvironmentException('Executables created by D compiler %s are not runnable.' % self.name_string())
+
+    def needs_static_linker(self):
+        return True
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def get_linker_exelist(self):
+        return self.exelist[:]
+
+    def get_preprocess_only_args(self):
+        return ['-E']
+
+    def get_compile_only_args(self):
+        return ['-c']
+
+    def depfile_for_object(self, objfile):
+        return objfile + '.' + self.get_depfile_suffix()
+
+    def get_depfile_suffix(self):
+        return 'dep'
+
+    def get_pic_args(self):
+        return ['-fPIC']
+
+    def get_std_shared_lib_link_args(self):
+        return ['-shared']
+
+    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
+        # FIXME: Make this work for Windows, MacOS and cross-compiling
+        return get_gcc_soname_args(GCC_STANDARD, prefix, shlib_name, suffix, path, soversion, is_shared_module)
+
+    def get_unittest_args(self):
+        return ['-unittest']
+
+    def get_buildtype_linker_args(self, buildtype):
+        return []
+
+    def get_std_exe_link_args(self):
+        return []
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        # This method is to be used by LDC and DMD.
+        # GDC can deal with the verbatim flags.
+        if not rpath_paths and not install_rpath:
+            return []
+        paths = ':'.join([os.path.join(build_dir, p) for p in rpath_paths])
+        if len(paths) < len(install_rpath):
+            padding = 'X' * (len(install_rpath) - len(paths))
+            if not paths:
+                paths = padding
+            else:
+                paths = paths + ':' + padding
+        return ['-L-rpath={}'.format(paths)]
+
+    def _get_compiler_check_args(self, env, extra_args, dependencies, mode='compile'):
+        if extra_args is None:
+            extra_args = []
+        elif isinstance(extra_args, str):
+            extra_args = [extra_args]
+        if dependencies is None:
+            dependencies = []
+        elif not isinstance(dependencies, list):
+            dependencies = [dependencies]
+        # Collect compiler arguments
+        args = CompilerArgs(self)
+        for d in dependencies:
+            # Add compile flags needed by dependencies
+            args += d.get_compile_args()
+            if mode == 'link':
+                # Add link flags needed to find dependencies
+                args += d.get_link_args()
+
+        if mode == 'compile':
+            # Add DFLAGS from the env
+            args += env.coredata.external_args[self.language]
+        elif mode == 'link':
+            # Add LDFLAGS from the env
+            args += env.coredata.external_link_args[self.language]
+        # extra_args must override all other arguments, so we add them last
+        args += extra_args
+        return args
+
+    def compiles(self, code, env, extra_args=None, dependencies=None, mode='compile'):
+        args = self._get_compiler_check_args(env, extra_args, dependencies, mode)
+
+        with self.compile(code, args, mode) as p:
+            return p.returncode == 0
+
+    def has_multi_arguments(self, args, env):
+        return self.compiles('int i;\n', env, extra_args=args)
+
+    @classmethod
+    def translate_args_to_nongnu(cls, args):
+        dcargs = []
+        # Translate common arguments to flags the LDC/DMD compilers
+        # can understand.
+        # The flags might have been added by pkg-config files,
+        # and are therefore out of the user's control.
+        for arg in args:
+            if arg == '-pthread':
+                continue
+            if arg.startswith('-Wl,'):
+                linkargs = arg[arg.index(',') + 1:].split(',')
+                for la in linkargs:
+                    dcargs.append('-L' + la.strip())
+                continue
+            elif arg.startswith('-l'):
+                # translate library link flag
+                dcargs.append('-L' + arg)
+                continue
+            elif arg.startswith('-L/') or arg.startswith('-L./'):
+                # we need to handle cases where -L is set by e.g. a pkg-config
+                # setting to select a linker search path. We can however not
+                # unconditionally prefix '-L' with '-L' because the user might
+                # have set this flag too to do what it is intended to for this
+                # compiler (pass flag through to the linker)
+                # Hence, we guess here whether the flag was intended to pass
+                # a linker search path.
+                dcargs.append('-L' + arg)
+                continue
+            dcargs.append(arg)
+
+        return dcargs
+
+
+class GnuDCompiler(DCompiler):
+    def __init__(self, exelist, version, is_cross):
+        DCompiler.__init__(self, exelist, version, is_cross)
+        self.id = 'gcc'
+        default_warn_args = ['-Wall', '-Wdeprecated']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+        self.base_options = ['b_colorout', 'b_sanitize', 'b_staticpic']
+
+    def get_colorout_args(self, colortype):
+        if version_compare(self.version, '>=4.9.0'):
+            return gnu_color_args[colortype][:]
+        return []
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return ['-fmake-deps=' + outfile]
+
+    def get_output_args(self, target):
+        return ['-o', target]
+
+    def get_linker_output_args(self, target):
+        return ['-o', target]
+
+    def get_include_args(self, path, is_system):
+        return ['-I' + path]
+
+    def get_warn_args(self, level):
+        return self.warn_args[level]
+
+    def get_werror_args(self):
+        return ['-Werror']
+
+    def get_linker_search_args(self, dirname):
+        return ['-L' + dirname]
+
+    def get_buildtype_args(self, buildtype):
+        return d_gdc_buildtype_args[buildtype]
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
+
+    def get_unittest_args(self):
+        return ['-funittest']
+
+
+class LLVMDCompiler(DCompiler):
+    def __init__(self, exelist, version, is_cross):
+        DCompiler.__init__(self, exelist, version, is_cross)
+        self.id = 'llvm'
+        self.base_options = ['b_coverage', 'b_colorout']
+
+    def get_colorout_args(self, colortype):
+        if colortype == 'always':
+            return ['-enable-color']
+        return []
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        # LDC using the -deps flag returns a non-Makefile dependency-info file, which
+        # the backends can not use. So we disable this feature for now.
+        return []
+
+    def get_output_args(self, target):
+        return ['-of', target]
+
+    def get_linker_output_args(self, target):
+        return ['-of', target]
+
+    def get_include_args(self, path, is_system):
+        return ['-I' + path]
+
+    def get_warn_args(self, level):
+        if level == '2' or level == '3':
+            return ['-wi', '-dw']
+        else:
+            return ['-wi']
+
+    def get_werror_args(self):
+        return ['-w']
+
+    def get_coverage_args(self):
+        return ['-cov']
+
+    def get_buildtype_args(self, buildtype):
+        return d_ldc_buildtype_args[buildtype]
+
+    def get_pic_args(self):
+        return ['-relocation-model=pic']
+
+    def get_linker_search_args(self, dirname):
+        # -L is recognized as "add this to the search path" by the linker,
+        # while the compiler recognizes it as "pass to linker". So, the first
+        # -L is for the compiler, telling it to pass the second -L to the linker.
+        return ['-L-L' + dirname]
+
+    @classmethod
+    def unix_args_to_native(cls, args):
+        return cls.translate_args_to_nongnu(args)
+
+
+class DmdDCompiler(DCompiler):
+    def __init__(self, exelist, version, is_cross):
+        DCompiler.__init__(self, exelist, version, is_cross)
+        self.id = 'dmd'
+        self.base_options = ['b_coverage', 'b_colorout']
+
+    def get_colorout_args(self, colortype):
+        if colortype == 'always':
+            return ['-color=on']
+        return []
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        # LDC using the -deps flag returns a non-Makefile dependency-info file, which
+        # the backends can not use. So we disable this feature for now.
+        return []
+
+    def get_output_args(self, target):
+        return ['-of' + target]
+
+    def get_werror_args(self):
+        return ['-w']
+
+    def get_linker_output_args(self, target):
+        return ['-of' + target]
+
+    def get_include_args(self, path, is_system):
+        return ['-I' + path]
+
+    def get_warn_args(self, level):
+        return ['-wi']
+
+    def get_coverage_args(self):
+        return ['-cov']
+
+    def get_linker_search_args(self, dirname):
+        # -L is recognized as "add this to the search path" by the linker,
+        # while the compiler recognizes it as "pass to linker". So, the first
+        # -L is for the compiler, telling it to pass the second -L to the linker.
+        return ['-L-L' + dirname]
+
+    def get_buildtype_args(self, buildtype):
+        return d_dmd_buildtype_args[buildtype]
+
+    def get_std_shared_lib_link_args(self):
+        return ['-shared', '-defaultlib=libphobos2.so']
+
+    @classmethod
+    def unix_args_to_native(cls, args):
+        return cls.translate_args_to_nongnu(args)
diff --git a/mesonbuild/compilers/fortran.py b/mesonbuild/compilers/fortran.py
new file mode 100644
index 0000000..d44b529
--- /dev/null
+++ b/mesonbuild/compilers/fortran.py
@@ -0,0 +1,289 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path, subprocess
+
+from ..mesonlib import EnvironmentException, is_osx
+
+from .compilers import (
+    GCC_CYGWIN,
+    GCC_MINGW,
+    GCC_OSX,
+    GCC_STANDARD,
+    ICC_STANDARD,
+    apple_buildtype_linker_args,
+    get_gcc_soname_args,
+    gnulike_buildtype_args,
+    gnulike_buildtype_linker_args,
+    Compiler,
+    IntelCompiler,
+)
+
+class FortranCompiler(Compiler):
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        self.language = 'fortran'
+        super().__init__(exelist, version)
+        self.is_cross = is_cross
+        self.exe_wrapper = exe_wrapper
+        # Not really correct but I don't have Fortran compilers to test with. Sorry.
+        self.gcc_type = GCC_STANDARD
+        self.id = "IMPLEMENTATION CLASSES MUST SET THIS"
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def get_pic_args(self):
+        if self.gcc_type in (GCC_CYGWIN, GCC_MINGW, GCC_OSX):
+            return [] # On Window and OS X, pic is always on.
+        return ['-fPIC']
+
+    def get_std_shared_lib_link_args(self):
+        return ['-shared']
+
+    def needs_static_linker(self):
+        return True
+
+    def sanity_check(self, work_dir, environment):
+        source_name = os.path.join(work_dir, 'sanitycheckf.f90')
+        binary_name = os.path.join(work_dir, 'sanitycheckf')
+        with open(source_name, 'w') as ofile:
+            ofile.write('''program prog
+     print *, "Fortran compilation is working."
+end program prog
+''')
+        extra_flags = self.get_cross_extra_flags(environment, link=True)
+        pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('Compiler %s can not compile programs.' % self.name_string())
+        if self.is_cross:
+            if self.exe_wrapper is None:
+                # Can't check if the binaries run so we have to assume they do
+                return
+            cmdlist = self.exe_wrapper + [binary_name]
+        else:
+            cmdlist = [binary_name]
+        pe = subprocess.Popen(cmdlist, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+        pe.wait()
+        if pe.returncode != 0:
+            raise EnvironmentException('Executables created by Fortran compiler %s are not runnable.' % self.name_string())
+
+    def get_std_warn_args(self, level):
+        return FortranCompiler.std_warn_args
+
+    def get_buildtype_args(self, buildtype):
+        return gnulike_buildtype_args[buildtype]
+
+    def get_buildtype_linker_args(self, buildtype):
+        if is_osx():
+            return apple_buildtype_linker_args[buildtype]
+        return gnulike_buildtype_linker_args[buildtype]
+
+    def split_shlib_to_parts(self, fname):
+        return os.path.split(fname)[0], fname
+
+    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
+        return get_gcc_soname_args(self.gcc_type, prefix, shlib_name, suffix, path, soversion, is_shared_module)
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        # Disabled until this is fixed:
+        # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62162
+        # return ['-cpp', '-MMD', '-MQ', outtarget]
+        return []
+
+    def get_output_args(self, target):
+        return ['-o', target]
+
+    def get_preprocess_only_args(self):
+        return ['-E']
+
+    def get_compile_only_args(self):
+        return ['-c']
+
+    def get_linker_exelist(self):
+        return self.exelist[:]
+
+    def get_linker_output_args(self, outputname):
+        return ['-o', outputname]
+
+    def get_include_args(self, path, is_system):
+        return ['-I' + path]
+
+    def get_module_outdir_args(self, path):
+        return ['-J' + path]
+
+    def depfile_for_object(self, objfile):
+        return objfile + '.' + self.get_depfile_suffix()
+
+    def get_depfile_suffix(self):
+        return 'd'
+
+    def get_std_exe_link_args(self):
+        return []
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
+
+    def module_name_to_filename(self, module_name):
+        return module_name.lower() + '.mod'
+
+    def get_warn_args(self, level):
+        return ['-Wall']
+
+    def get_no_warn_args(self):
+        return ['-w']
+
+
+class GnuFortranCompiler(FortranCompiler):
+    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.gcc_type = gcc_type
+        self.defines = defines or {}
+        self.id = 'gcc'
+
+    def has_builtin_define(self, define):
+        return define in self.defines
+
+    def get_builtin_define(self, define):
+        if define in self.defines:
+            return self.defines[define]
+
+    def get_always_args(self):
+        return ['-pipe']
+
+    def gen_import_library_args(self, implibname):
+        """
+        The name of the outputted import library
+
+        Used only on Windows
+        """
+        return ['-Wl,--out-implib=' + implibname]
+
+
+class G95FortranCompiler(FortranCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.id = 'g95'
+
+    def get_module_outdir_args(self, path):
+        return ['-fmod=' + path]
+
+    def get_always_args(self):
+        return ['-pipe']
+
+    def get_no_warn_args(self):
+        # FIXME: Confirm that there's no compiler option to disable all warnings
+        return []
+
+    def gen_import_library_args(self, implibname):
+        """
+        The name of the outputted import library
+
+        Used only on Windows
+        """
+        return ['-Wl,--out-implib=' + implibname]
+
+
+class SunFortranCompiler(FortranCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.id = 'sun'
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return ['-fpp']
+
+    def get_always_args(self):
+        return []
+
+    def get_warn_args(self, level):
+        return []
+
+    def get_module_outdir_args(self, path):
+        return ['-moddir=' + path]
+
+
+class IntelFortranCompiler(IntelCompiler, FortranCompiler):
+    std_warn_args = ['-warn', 'all']
+
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        self.file_suffixes = ('f90', 'f', 'for', 'ftn', 'fpp')
+        FortranCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        # FIXME: Add support for OS X and Windows in detect_fortran_compiler so
+        # we are sent the type of compiler
+        IntelCompiler.__init__(self, ICC_STANDARD)
+        self.id = 'intel'
+
+    def get_module_outdir_args(self, path):
+        return ['-module', path]
+
+    def get_warn_args(self, level):
+        return IntelFortranCompiler.std_warn_args
+
+
+class PathScaleFortranCompiler(FortranCompiler):
+    std_warn_args = ['-fullwarn']
+
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.id = 'pathscale'
+
+    def get_module_outdir_args(self, path):
+        return ['-module', path]
+
+    def get_std_warn_args(self, level):
+        return PathScaleFortranCompiler.std_warn_args
+
+class PGIFortranCompiler(FortranCompiler):
+    std_warn_args = ['-Minform=inform']
+
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.id = 'pgi'
+
+    def get_module_outdir_args(self, path):
+        return ['-module', path]
+
+    def get_warn_args(self, level):
+        return PGIFortranCompiler.std_warn_args
+
+    def get_no_warn_args(self):
+        return ['-silent']
+
+
+class Open64FortranCompiler(FortranCompiler):
+    std_warn_args = ['-fullwarn']
+
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.id = 'open64'
+
+    def get_module_outdir_args(self, path):
+        return ['-module', path]
+
+    def get_warn_args(self, level):
+        return Open64FortranCompiler.std_warn_args
+
+
+class NAGFortranCompiler(FortranCompiler):
+    std_warn_args = []
+
+    def __init__(self, exelist, version, is_cross, exe_wrapper=None):
+        super().__init__(exelist, version, is_cross, exe_wrapper=None)
+        self.id = 'nagfor'
+
+    def get_module_outdir_args(self, path):
+        return ['-mdir', path]
+
+    def get_warn_args(self, level):
+        return NAGFortranCompiler.std_warn_args
diff --git a/mesonbuild/compilers/java.py b/mesonbuild/compilers/java.py
new file mode 100644
index 0000000..0253bfe
--- /dev/null
+++ b/mesonbuild/compilers/java.py
@@ -0,0 +1,115 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path, shutil, subprocess
+
+from ..mesonlib import EnvironmentException
+
+from .compilers import Compiler, java_buildtype_args
+
+class JavaCompiler(Compiler):
+    def __init__(self, exelist, version):
+        self.language = 'java'
+        super().__init__(exelist, version)
+        self.id = 'unknown'
+        self.javarunner = 'java'
+
+    def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
+        return []
+
+    def get_werror_args(self):
+        return ['-Werror']
+
+    def split_shlib_to_parts(self, fname):
+        return None, fname
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return []
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return []
+
+    def get_linker_exelist(self):
+        return self.exelist[:]
+
+    def get_compile_only_args(self):
+        return []
+
+    def get_output_args(self, subdir):
+        if subdir == '':
+            subdir = './'
+        return ['-d', subdir, '-s', subdir]
+
+    def get_linker_output_args(self, outputname):
+        return []
+
+    def get_coverage_args(self):
+        return []
+
+    def get_coverage_link_args(self):
+        return []
+
+    def get_std_exe_link_args(self):
+        return []
+
+    def get_include_args(self, path):
+        return []
+
+    def get_pic_args(self):
+        return []
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def get_pch_use_args(self, pch_dir, header):
+        return []
+
+    def get_pch_name(self, header_name):
+        return ''
+
+    def get_buildtype_args(self, buildtype):
+        return java_buildtype_args[buildtype]
+
+    def sanity_check(self, work_dir, environment):
+        src = 'SanityCheck.java'
+        obj = 'SanityCheck'
+        source_name = os.path.join(work_dir, src)
+        with open(source_name, 'w') as ofile:
+            ofile.write('''class SanityCheck {
+  public static void main(String[] args) {
+    int i;
+  }
+}
+''')
+        pc = subprocess.Popen(self.exelist + [src], cwd=work_dir)
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('Java compiler %s can not compile programs.' % self.name_string())
+        runner = shutil.which(self.javarunner)
+        if runner:
+            cmdlist = [runner, obj]
+            pe = subprocess.Popen(cmdlist, cwd=work_dir)
+            pe.wait()
+            if pe.returncode != 0:
+                raise EnvironmentException('Executables created by Java compiler %s are not runnable.' % self.name_string())
+        else:
+            m = "Java Virtual Machine wasn't found, but it's needed by Meson. " \
+                "Please install a JRE.\nIf you have specific needs where this " \
+                "requirement doesn't make sense, please open a bug at " \
+                "https://github.com/mesonbuild/meson/issues/new and tell us " \
+                "all about it."
+            raise EnvironmentException(m)
+
+    def needs_static_linker(self):
+        return False
diff --git a/mesonbuild/compilers/objc.py b/mesonbuild/compilers/objc.py
new file mode 100644
index 0000000..b011c81
--- /dev/null
+++ b/mesonbuild/compilers/objc.py
@@ -0,0 +1,64 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path, subprocess
+
+from ..mesonlib import EnvironmentException
+
+from .c import CCompiler
+from .compilers import ClangCompiler, GnuCompiler
+
+class ObjCCompiler(CCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrap):
+        self.language = 'objc'
+        CCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+
+    def sanity_check(self, work_dir, environment):
+        # TODO try to use sanity_check_impl instead of duplicated code
+        source_name = os.path.join(work_dir, 'sanitycheckobjc.m')
+        binary_name = os.path.join(work_dir, 'sanitycheckobjc')
+        extra_flags = self.get_cross_extra_flags(environment, link=False)
+        if self.is_cross:
+            extra_flags += self.get_compile_only_args()
+        with open(source_name, 'w') as ofile:
+            ofile.write('#import<stdio.h>\n'
+                        'int main(int argc, char **argv) { return 0; }\n')
+        pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('ObjC compiler %s can not compile programs.' % self.name_string())
+        if self.is_cross:
+            # Can't check if the binaries run so we have to assume they do
+            return
+        pe = subprocess.Popen(binary_name)
+        pe.wait()
+        if pe.returncode != 0:
+            raise EnvironmentException('Executables created by ObjC compiler %s are not runnable.' % self.name_string())
+
+
+class GnuObjCCompiler(GnuCompiler, ObjCCompiler):
+    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
+        ObjCCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        GnuCompiler.__init__(self, gcc_type, defines)
+        default_warn_args = ['-Wall', '-Winvalid-pch']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+
+class ClangObjCCompiler(ClangCompiler, GnuObjCCompiler):
+    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
+        GnuObjCCompiler.__init__(self, exelist, version, cltype, is_cross, exe_wrapper)
+        ClangCompiler.__init__(self, cltype)
+        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
diff --git a/mesonbuild/compilers/objcpp.py b/mesonbuild/compilers/objcpp.py
new file mode 100644
index 0000000..b181f9a
--- /dev/null
+++ b/mesonbuild/compilers/objcpp.py
@@ -0,0 +1,65 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path, subprocess
+
+from ..mesonlib import EnvironmentException
+
+from .cpp import CPPCompiler
+from .compilers import ClangCompiler, GnuCompiler
+
+class ObjCPPCompiler(CPPCompiler):
+    def __init__(self, exelist, version, is_cross, exe_wrap):
+        self.language = 'objcpp'
+        CPPCompiler.__init__(self, exelist, version, is_cross, exe_wrap)
+
+    def sanity_check(self, work_dir, environment):
+        # TODO try to use sanity_check_impl instead of duplicated code
+        source_name = os.path.join(work_dir, 'sanitycheckobjcpp.mm')
+        binary_name = os.path.join(work_dir, 'sanitycheckobjcpp')
+        extra_flags = self.get_cross_extra_flags(environment, link=False)
+        if self.is_cross:
+            extra_flags += self.get_compile_only_args()
+        with open(source_name, 'w') as ofile:
+            ofile.write('#import<stdio.h>\n'
+                        'class MyClass;'
+                        'int main(int argc, char **argv) { return 0; }\n')
+        pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('ObjC++ compiler %s can not compile programs.' % self.name_string())
+        if self.is_cross:
+            # Can't check if the binaries run so we have to assume they do
+            return
+        pe = subprocess.Popen(binary_name)
+        pe.wait()
+        if pe.returncode != 0:
+            raise EnvironmentException('Executables created by ObjC++ compiler %s are not runnable.' % self.name_string())
+
+
+class GnuObjCPPCompiler(GnuCompiler, ObjCPPCompiler):
+    def __init__(self, exelist, version, gcc_type, is_cross, exe_wrapper=None, defines=None):
+        ObjCPPCompiler.__init__(self, exelist, version, is_cross, exe_wrapper)
+        GnuCompiler.__init__(self, gcc_type, defines)
+        default_warn_args = ['-Wall', '-Winvalid-pch', '-Wnon-virtual-dtor']
+        self.warn_args = {'1': default_warn_args,
+                          '2': default_warn_args + ['-Wextra'],
+                          '3': default_warn_args + ['-Wextra', '-Wpedantic']}
+
+
+class ClangObjCPPCompiler(ClangCompiler, GnuObjCPPCompiler):
+    def __init__(self, exelist, version, cltype, is_cross, exe_wrapper=None):
+        GnuObjCPPCompiler.__init__(self, exelist, version, cltype, is_cross, exe_wrapper)
+        ClangCompiler.__init__(self, cltype)
+        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']
diff --git a/mesonbuild/compilers/rust.py b/mesonbuild/compilers/rust.py
new file mode 100644
index 0000000..38ba6a2
--- /dev/null
+++ b/mesonbuild/compilers/rust.py
@@ -0,0 +1,59 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import subprocess, os.path
+
+from ..mesonlib import EnvironmentException, Popen_safe
+
+from .compilers import Compiler, rust_buildtype_args
+
+class RustCompiler(Compiler):
+    def __init__(self, exelist, version):
+        self.language = 'rust'
+        super().__init__(exelist, version)
+        self.id = 'rustc'
+
+    def needs_static_linker(self):
+        return False
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def sanity_check(self, work_dir, environment):
+        source_name = os.path.join(work_dir, 'sanity.rs')
+        output_name = os.path.join(work_dir, 'rusttest')
+        with open(source_name, 'w') as ofile:
+            ofile.write('''fn main() {
+}
+''')
+        pc = subprocess.Popen(self.exelist + ['-o', output_name, source_name], cwd=work_dir)
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('Rust compiler %s can not compile programs.' % self.name_string())
+        if subprocess.call(output_name) != 0:
+            raise EnvironmentException('Executables created by Rust compiler %s are not runnable.' % self.name_string())
+
+    def get_dependency_gen_args(self, outfile):
+        return ['--dep-info', outfile]
+
+    def get_buildtype_args(self, buildtype):
+        return rust_buildtype_args[buildtype]
+
+    def build_rpath_args(self, build_dir, from_dir, rpath_paths, install_rpath):
+        return self.build_unix_rpath_args(build_dir, from_dir, rpath_paths, install_rpath)
+
+    def get_sysroot(self):
+        cmd = self.exelist + ['--print', 'sysroot']
+        p, stdo, stde = Popen_safe(cmd)
+        return stdo.split('\n')[0]
diff --git a/mesonbuild/compilers/swift.py b/mesonbuild/compilers/swift.py
new file mode 100644
index 0000000..59997d6
--- /dev/null
+++ b/mesonbuild/compilers/swift.py
@@ -0,0 +1,99 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import subprocess, os.path
+
+from ..mesonlib import EnvironmentException
+
+from .compilers import Compiler, swift_buildtype_args
+
+class SwiftCompiler(Compiler):
+    def __init__(self, exelist, version):
+        self.language = 'swift'
+        super().__init__(exelist, version)
+        self.version = version
+        self.id = 'llvm'
+        self.is_cross = False
+
+    def get_linker_exelist(self):
+        return self.exelist[:]
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def needs_static_linker(self):
+        return True
+
+    def get_werror_args(self):
+        return ['--fatal-warnings']
+
+    def get_dependency_gen_args(self, outtarget, outfile):
+        return ['-emit-dependencies']
+
+    def depfile_for_object(self, objfile):
+        return os.path.splitext(objfile)[0] + '.' + self.get_depfile_suffix()
+
+    def get_depfile_suffix(self):
+        return 'd'
+
+    def get_output_args(self, target):
+        return ['-o', target]
+
+    def get_linker_output_args(self, target):
+        return ['-o', target]
+
+    def get_header_import_args(self, headername):
+        return ['-import-objc-header', headername]
+
+    def get_warn_args(self, level):
+        return []
+
+    def get_buildtype_args(self, buildtype):
+        return swift_buildtype_args[buildtype]
+
+    def get_buildtype_linker_args(self, buildtype):
+        return []
+
+    def get_std_exe_link_args(self):
+        return ['-emit-executable']
+
+    def get_module_args(self, modname):
+        return ['-module-name', modname]
+
+    def get_mod_gen_args(self):
+        return ['-emit-module']
+
+    def build_rpath_args(self, *args):
+        return [] # FIXME
+
+    def get_include_args(self, dirname):
+        return ['-I' + dirname]
+
+    def get_compile_only_args(self):
+        return ['-c']
+
+    def sanity_check(self, work_dir, environment):
+        src = 'swifttest.swift'
+        source_name = os.path.join(work_dir, src)
+        output_name = os.path.join(work_dir, 'swifttest')
+        with open(source_name, 'w') as ofile:
+            ofile.write('''print("Swift compilation is working.")
+''')
+        extra_flags = self.get_cross_extra_flags(environment, link=True)
+        pc = subprocess.Popen(self.exelist + extra_flags + ['-emit-executable', '-o', output_name, src], cwd=work_dir)
+        pc.wait()
+        if pc.returncode != 0:
+            raise EnvironmentException('Swift compiler %s can not compile programs.' % self.name_string())
+        if subprocess.call(output_name) != 0:
+            raise EnvironmentException('Executables created by Swift compiler %s are not runnable.' % self.name_string())
diff --git a/mesonbuild/compilers/vala.py b/mesonbuild/compilers/vala.py
new file mode 100644
index 0000000..21c040c
--- /dev/null
+++ b/mesonbuild/compilers/vala.py
@@ -0,0 +1,90 @@
+# Copyright 2012-2017 The Meson development team
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os.path
+
+from .. import mlog
+from ..mesonlib import EnvironmentException
+
+from .compilers import Compiler
+
+class ValaCompiler(Compiler):
+    def __init__(self, exelist, version):
+        self.language = 'vala'
+        super().__init__(exelist, version)
+        self.version = version
+        self.id = 'valac'
+        self.is_cross = False
+
+    def name_string(self):
+        return ' '.join(self.exelist)
+
+    def needs_static_linker(self):
+        return False # Because compiles into C.
+
+    def get_output_args(self, target):
+        return ['-o', target]
+
+    def get_compile_only_args(self):
+        return ['-C']
+
+    def get_pic_args(self):
+        return []
+
+    def get_always_args(self):
+        return ['-C']
+
+    def get_warn_args(self, warning_level):
+        return []
+
+    def get_no_warn_args(self):
+        return ['--disable-warnings']
+
+    def get_werror_args(self):
+        return ['--fatal-warnings']
+
+    def sanity_check(self, work_dir, environment):
+        code = 'class MesonSanityCheck : Object { }'
+        args = self.get_cross_extra_flags(environment, link=False)
+        with self.compile(code, args, 'compile') as p:
+            if p.returncode != 0:
+                msg = 'Vala compiler {!r} can not compile programs' \
+                      ''.format(self.name_string())
+                raise EnvironmentException(msg)
+
+    def get_buildtype_args(self, buildtype):
+        if buildtype == 'debug' or buildtype == 'debugoptimized' or buildtype == 'minsize':
+            return ['--debug']
+        return []
+
+    def find_library(self, libname, env, extra_dirs):
+        if extra_dirs and isinstance(extra_dirs, str):
+            extra_dirs = [extra_dirs]
+        # Valac always looks in the default vapi dir, so only search there if
+        # no extra dirs are specified.
+        if not extra_dirs:
+            code = 'class MesonFindLibrary : Object { }'
+            vapi_args = ['--pkg', libname]
+            args = self.get_cross_extra_flags(env, link=False)
+            args += vapi_args
+            with self.compile(code, args, 'compile') as p:
+                if p.returncode == 0:
+                    return vapi_args
+        # Not found? Try to find the vapi file itself.
+        for d in extra_dirs:
+            vapi = os.path.join(d, libname + '.vapi')
+            if os.path.isfile(vapi):
+                return [vapi]
+        mlog.debug('Searched {!r} and {!r} wasn\'t found'.format(extra_dirs, libname))
+        return None
diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
index 4d3adc8..3be068a 100644
--- a/mesonbuild/environment.py
+++ b/mesonbuild/environment.py
@@ -14,9 +14,55 @@
 
 import configparser, os, platform, re, shlex, shutil, subprocess
 
-from .compilers import *
+from . import coredata
 from .linkers import ArLinker, VisualStudioLinker
+from . import mesonlib
 from .mesonlib import EnvironmentException, Popen_safe
+from . import mlog
+
+from . import compilers
+from .compilers import (
+    CLANG_OSX,
+    CLANG_STANDARD,
+    CLANG_WIN,
+    GCC_CYGWIN,
+    GCC_MINGW,
+    GCC_OSX,
+    GCC_STANDARD,
+    ICC_STANDARD,
+    is_assembly,
+    is_header,
+    is_library,
+    is_llvm_ir,
+    is_object,
+    is_source,
+)
+from .compilers import (
+    ClangCCompiler,
+    ClangCPPCompiler,
+    ClangObjCCompiler,
+    ClangObjCPPCompiler,
+    G95FortranCompiler,
+    GnuCCompiler,
+    GnuCPPCompiler,
+    GnuFortranCompiler,
+    GnuObjCCompiler,
+    GnuObjCPPCompiler,
+    IntelCCompiler,
+    IntelCPPCompiler,
+    IntelFortranCompiler,
+    JavaCompiler,
+    MonoCompiler,
+    NAGFortranCompiler,
+    Open64FortranCompiler,
+    PathScaleFortranCompiler,
+    PGIFortranCompiler,
+    RustCompiler,
+    SunFortranCompiler,
+    ValaCompiler,
+    VisualStudioCCompiler,
+    VisualStudioCPPCompiler,
+)
 
 build_filename = 'meson.build'
 
@@ -680,11 +726,11 @@ class Environment:
             raise EnvironmentException('Could not execute D compiler "%s"' % ' '.join(exelist))
         version = search_version(out)
         if 'LLVM D compiler' in out:
-            return LLVMDCompiler(exelist, version, is_cross)
+            return compilers.LLVMDCompiler(exelist, version, is_cross)
         elif 'gdc' in out:
-            return GnuDCompiler(exelist, version, is_cross)
+            return compilers.GnuDCompiler(exelist, version, is_cross)
         elif 'Digital Mars' in out:
-            return DmdDCompiler(exelist, version, is_cross)
+            return compilers.DmdDCompiler(exelist, version, is_cross)
         raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
 
     def detect_swift_compiler(self):
@@ -695,7 +741,7 @@ class Environment:
             raise EnvironmentException('Could not execute Swift compiler "%s"' % ' '.join(exelist))
         version = search_version(err)
         if 'Swift' in err:
-            return SwiftCompiler(exelist, version)
+            return compilers.SwiftCompiler(exelist, version)
         raise EnvironmentException('Unknown compiler "' + ' '.join(exelist) + '"')
 
     def detect_static_linker(self, compiler):
@@ -708,12 +754,12 @@ class Environment:
             evar = 'AR'
             if evar in os.environ:
                 linkers = [shlex.split(os.environ[evar])]
-            elif isinstance(compiler, VisualStudioCCompiler):
+            elif isinstance(compiler, compilers.VisualStudioCCompiler):
                 linkers = [self.vs_static_linker]
-            elif isinstance(compiler, GnuCompiler):
+            elif isinstance(compiler, compilers.GnuCompiler):
                 # Use gcc-ar if available; needed for LTO
                 linkers = [self.gcc_static_linker, self.default_static_linker]
-            elif isinstance(compiler, ClangCompiler):
+            elif isinstance(compiler, compilers.ClangCompiler):
                 # Use llvm-ar if available; needed for LTO
                 linkers = [self.clang_static_linker, self.default_static_linker]
             else:
diff --git a/run_project_tests.py b/run_project_tests.py
index 76216a4..5994c5a 100755
--- a/run_project_tests.py
+++ b/run_project_tests.py
@@ -25,7 +25,6 @@ import mesontest
 from mesonbuild import environment
 from mesonbuild import mesonlib
 from mesonbuild import mlog
-from mesonbuild import mesonmain
 from mesonbuild.mesonlib import stringlistify, Popen_safe
 from mesonbuild.coredata import backendlist
 import argparse
diff --git a/run_unittests.py b/run_unittests.py
index 93a43ae..6a50302 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -109,7 +109,7 @@ class InternalTests(unittest.TestCase):
 
     def test_compiler_args_class(self):
         cargsfunc = mesonbuild.compilers.CompilerArgs
-        c = mesonbuild.environment.CCompiler([], 'fake', False)
+        c = mesonbuild.compilers.CCompiler([], 'fake', False)
         # Test that bad initialization fails
         self.assertRaises(TypeError, cargsfunc, [])
         self.assertRaises(TypeError, cargsfunc, [], [])