diff options
Diffstat (limited to 'mesonbuild/compilers/c.py')
| -rw-r--r-- | mesonbuild/compilers/c.py | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/mesonbuild/compilers/c.py b/mesonbuild/compilers/c.py index 436f699..bde9f63 100644 --- a/mesonbuild/compilers/c.py +++ b/mesonbuild/compilers/c.py @@ -24,9 +24,10 @@ from .. import mlog from .. import coredata from . import compilers from ..mesonlib import ( - EnvironmentException, version_compare, Popen_safe, listify, + EnvironmentException, MesonException, version_compare, Popen_safe, listify, for_windows, for_darwin, for_cygwin, for_haiku, for_openbsd, ) +from .c_function_attributes import C_FUNC_ATTRIBUTES from .compilers import ( GCC_MINGW, @@ -57,6 +58,13 @@ class CCompiler(Compiler): find_library_cache = {} internal_libs = gnu_compiler_internal_libs + @staticmethod + def attribute_check_func(name): + try: + return C_FUNC_ATTRIBUTES[name] + except KeyError: + raise MesonException('Unknown function attribute "{}"'.format(name)) + def __init__(self, exelist, version, is_cross, exe_wrapper=None, **kwargs): # If a child ObjC or CPP class has already set it, don't set it ourselves if not hasattr(self, 'language'): @@ -1045,6 +1053,19 @@ class CCompiler(Compiler): m = pattern.match(ret) return ret + def has_func_attribute(self, name, env): + # Just assume that if we're not on windows that dllimport and dllexport + # don't work + if not (for_windows(env.is_cross_build(), env) or + for_cygwin(env.is_cross_build(), env)): + if name in ['dllimport', 'dllexport']: + return False + + # Clang and GCC both return warnings if the __attribute__ is undefined, + # so set -Werror + return self.compiles(self.attribute_check_func(name), env, extra_args='-Werror') + + class ClangCCompiler(ClangCompiler, CCompiler): def __init__(self, exelist, version, clang_type, is_cross, exe_wrapper=None, **kwargs): CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper, **kwargs) @@ -1490,6 +1511,12 @@ class VisualStudioCCompiler(CCompiler): assert(buildtype == 'custom') raise EnvironmentException('Requested C runtime based on buildtype, but buildtype is "custom".') + def has_func_attribute(self, name, env): + # MSVC doesn't have __attribute__ like Clang and GCC do, so just return + # false without compiling anything + return name in ['dllimport', 'dllexport'] + + class ArmCCompiler(ArmCompiler, CCompiler): def __init__(self, exelist, version, is_cross, exe_wrapper=None, **kwargs): CCompiler.__init__(self, exelist, version, is_cross, exe_wrapper, **kwargs) |