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Diffstat (limited to 'mesonbuild/compilers/mixins/clang.py')
-rw-r--r-- | mesonbuild/compilers/mixins/clang.py | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/mesonbuild/compilers/mixins/clang.py b/mesonbuild/compilers/mixins/clang.py new file mode 100644 index 0000000..2e4eecd --- /dev/null +++ b/mesonbuild/compilers/mixins/clang.py @@ -0,0 +1,81 @@ +# Copyright 2019 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. + +"""Abstractions for the LLVM/Clang compiler family.""" + +import os + +from .gnu import GnuLikeCompiler +from ..compilers import clike_optimization_args +from ... import mesonlib + +clang_color_args = {'auto': ['-Xclang', '-fcolor-diagnostics'], + 'always': ['-Xclang', '-fcolor-diagnostics'], + 'never': ['-Xclang', '-fno-color-diagnostics'], + } + + +class ClangCompiler(GnuLikeCompiler): + def __init__(self, compiler_type): + super().__init__(compiler_type) + self.id = 'clang' + self.base_options.append('b_colorout') + if self.compiler_type.is_osx_compiler: + self.base_options.append('b_bitcode') + # All Clang backends can also do LLVM IR + self.can_compile_suffixes.add('ll') + + def get_colorout_args(self, colortype): + return clang_color_args[colortype][:] + + def get_optimization_args(self, optimization_level): + return clike_optimization_args[optimization_level] + + def get_pch_suffix(self): + return 'pch' + + def get_pch_use_args(self, pch_dir, header): + # Workaround for Clang bug http://llvm.org/bugs/show_bug.cgi?id=15136 + # This flag is internal to Clang (or at least not documented on the man page) + # so it might change semantics at any time. + return ['-include-pch', os.path.join(pch_dir, self.get_pch_name(header))] + + def has_multi_arguments(self, args, env): + myargs = ['-Werror=unknown-warning-option', '-Werror=unused-command-line-argument'] + if mesonlib.version_compare(self.version, '>=3.6.0'): + myargs.append('-Werror=ignored-optimization-argument') + return super().has_multi_arguments( + myargs + args, + env) + + def has_function(self, funcname, prefix, env, *, extra_args=None, dependencies=None): + if extra_args is None: + extra_args = [] + # Starting with XCode 8, we need to pass this to force linker + # visibility to obey OS X/iOS/tvOS minimum version targets with + # -mmacosx-version-min, -miphoneos-version-min, -mtvos-version-min etc. + # https://github.com/Homebrew/homebrew-core/issues/3727 + if self.compiler_type.is_osx_compiler and mesonlib.version_compare(self.version, '>=8.0'): + extra_args.append('-Wl,-no_weak_imports') + return super().has_function(funcname, prefix, env, extra_args=extra_args, + dependencies=dependencies) + + def openmp_flags(self): + if mesonlib.version_compare(self.version, '>=3.8.0'): + return ['-fopenmp'] + elif mesonlib.version_compare(self.version, '>=3.7.0'): + return ['-fopenmp=libomp'] + else: + # Shouldn't work, but it'll be checked explicitly in the OpenMP dependency. + return [] |