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Diffstat (limited to 'mesonbuild/compilers/c.py')
| -rw-r--r-- | mesonbuild/compilers/c.py | 1007 |
1 files changed, 1007 insertions, 0 deletions
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] |