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# Copyright 2012-2022 The Meson development team
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Mixin classes to be shared between C and C++ compilers.
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Without this we'll end up with awful diamond inherintance problems. The goal
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of this is to have mixin's, which are classes that are designed *not* to be
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standalone, they only work through inheritance.
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"""
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import collections
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import functools
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import glob
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import itertools
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import os
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import re
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import subprocess
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import typing as T
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from pathlib import Path
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from ... import arglist
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from ... import mesonlib
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from ... import mlog
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from ...linkers import GnuLikeDynamicLinkerMixin, SolarisDynamicLinker, CompCertDynamicLinker
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from ...mesonlib import LibType
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from ...coredata import OptionKey
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from .. import compilers
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from ..compilers import CompileCheckMode
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from .visualstudio import VisualStudioLikeCompiler
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if T.TYPE_CHECKING:
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from ...dependencies import Dependency
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from ..._typing import ImmutableListProtocol
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from ...environment import Environment
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from ...compilers.compilers import Compiler
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from ...programs import ExternalProgram
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else:
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# This is a bit clever, for mypy we pretend that these mixins descend from
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# Compiler, so we get all of the methods and attributes defined for us, but
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# for runtime we make them descend from object (which all classes normally
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# do). This gives up DRYer type checking, with no runtime impact
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Compiler = object
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GROUP_FLAGS = re.compile(r'''\.so (?:\.[0-9]+)? (?:\.[0-9]+)? (?:\.[0-9]+)?$ |
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^(?:-Wl,)?-l |
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\.a$''', re.X)
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class CLikeCompilerArgs(arglist.CompilerArgs):
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prepend_prefixes = ('-I', '-L')
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dedup2_prefixes = ('-I', '-isystem', '-L', '-D', '-U')
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# NOTE: not thorough. A list of potential corner cases can be found in
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# https://github.com/mesonbuild/meson/pull/4593#pullrequestreview-182016038
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dedup1_prefixes = ('-l', '-Wl,-l', '-Wl,--export-dynamic')
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dedup1_suffixes = ('.lib', '.dll', '.so', '.dylib', '.a')
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dedup1_args = ('-c', '-S', '-E', '-pipe', '-pthread')
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def to_native(self, copy: bool = False) -> T.List[str]:
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# This seems to be allowed, but could never work?
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assert isinstance(self.compiler, compilers.Compiler), 'How did you get here'
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# Check if we need to add --start/end-group for circular dependencies
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# between static libraries, and for recursively searching for symbols
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# needed by static libraries that are provided by object files or
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# shared libraries.
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self.flush_pre_post()
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if copy:
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new = self.copy()
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else:
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new = self
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# This covers all ld.bfd, ld.gold, ld.gold, and xild on Linux, which
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# all act like (or are) gnu ld
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# TODO: this could probably be added to the DynamicLinker instead
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if isinstance(self.compiler.linker, (GnuLikeDynamicLinkerMixin, SolarisDynamicLinker, CompCertDynamicLinker)):
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group_start = -1
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group_end = -1
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for i, each in enumerate(new):
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if not GROUP_FLAGS.search(each):
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continue
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group_end = i
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if group_start < 0:
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# First occurrence of a library
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group_start = i
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if group_start >= 0:
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# Last occurrence of a library
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new.insert(group_end + 1, '-Wl,--end-group')
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new.insert(group_start, '-Wl,--start-group')
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# Remove system/default include paths added with -isystem
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default_dirs = self.compiler.get_default_include_dirs()
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if default_dirs:
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bad_idx_list = [] # type: T.List[int]
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for i, each in enumerate(new):
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if not each.startswith('-isystem'):
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continue
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# Remove the -isystem and the path if the path is a default path
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if (each == '-isystem' and
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i < (len(new) - 1) and
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new[i + 1] in default_dirs):
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bad_idx_list += [i, i + 1]
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elif each.startswith('-isystem=') and each[9:] in default_dirs:
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bad_idx_list += [i]
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elif each[8:] in default_dirs:
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bad_idx_list += [i]
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for i in reversed(bad_idx_list):
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new.pop(i)
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return self.compiler.unix_args_to_native(new._container)
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def __repr__(self) -> str:
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self.flush_pre_post()
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return f'CLikeCompilerArgs({self.compiler!r}, {self._container!r})'
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class CLikeCompiler(Compiler):
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"""Shared bits for the C and CPP Compilers."""
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if T.TYPE_CHECKING:
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warn_args = {} # type: T.Dict[str, T.List[str]]
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# TODO: Replace this manual cache with functools.lru_cache
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find_library_cache = {} # type: T.Dict[T.Tuple[T.Tuple[str, ...], str, T.Tuple[str, ...], str, LibType], T.Optional[T.List[str]]]
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find_framework_cache = {} # type: T.Dict[T.Tuple[T.Tuple[str, ...], str, T.Tuple[str, ...], bool], T.Optional[T.List[str]]]
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internal_libs = arglist.UNIXY_COMPILER_INTERNAL_LIBS
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def __init__(self, exe_wrapper: T.Optional['ExternalProgram'] = None):
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# If a child ObjC or CPP class has already set it, don't set it ourselves
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self.can_compile_suffixes.add('h')
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# If the exe wrapper was not found, pretend it wasn't set so that the
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# sanity check is skipped and compiler checks use fallbacks.
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if not exe_wrapper or not exe_wrapper.found() or not exe_wrapper.get_command():
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self.exe_wrapper = None
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else:
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self.exe_wrapper = exe_wrapper
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def compiler_args(self, args: T.Optional[T.Iterable[str]] = None) -> CLikeCompilerArgs:
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# This is correct, mypy just doesn't understand co-operative inheritance
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return CLikeCompilerArgs(self, args)
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def needs_static_linker(self) -> bool:
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return True # When compiling static libraries, so yes.
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def get_always_args(self) -> T.List[str]:
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'''
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Args that are always-on for all C compilers other than MSVC
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'''
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return self.get_largefile_args()
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def get_no_stdinc_args(self) -> T.List[str]:
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return ['-nostdinc']
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def get_no_stdlib_link_args(self) -> T.List[str]:
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return ['-nostdlib']
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def get_warn_args(self, level: str) -> T.List[str]:
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# TODO: this should be an enum
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return self.warn_args[level]
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def get_no_warn_args(self) -> T.List[str]:
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# Almost every compiler uses this for disabling warnings
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return ['-w']
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def get_depfile_suffix(self) -> str:
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return 'd'
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def get_exelist(self) -> T.List[str]:
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return self.exelist.copy()
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def get_preprocess_only_args(self) -> T.List[str]:
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return ['-E', '-P']
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def get_compile_only_args(self) -> T.List[str]:
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return ['-c']
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def get_no_optimization_args(self) -> T.List[str]:
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return ['-O0']
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def get_output_args(self, outputname: str) -> T.List[str]:
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return ['-o', outputname]
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def get_werror_args(self) -> T.List[str]:
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return ['-Werror']
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def get_include_args(self, path: str, is_system: bool) -> T.List[str]:
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if path == '':
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path = '.'
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if is_system:
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return ['-isystem', path]
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return ['-I' + path]
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def get_compiler_dirs(self, env: 'Environment', name: str) -> T.List[str]:
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'''
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Get dirs from the compiler, either `libraries:` or `programs:`
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'''
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return []
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@functools.lru_cache()
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def _get_library_dirs(self, env: 'Environment',
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elf_class: T.Optional[int] = None) -> 'ImmutableListProtocol[str]':
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# TODO: replace elf_class with enum
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dirs = self.get_compiler_dirs(env, 'libraries')
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if elf_class is None or elf_class == 0:
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return dirs
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# if we do have an elf class for 32-bit or 64-bit, we want to check that
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# the directory in question contains libraries of the appropriate class. Since
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# system directories aren't mixed, we only need to check one file for each
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# directory and go by that. If we can't check the file for some reason, assume
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# the compiler knows what it's doing, and accept the directory anyway.
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retval = []
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for d in dirs:
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files = [f for f in os.listdir(d) if f.endswith('.so') and os.path.isfile(os.path.join(d, f))]
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# if no files, accept directory and move on
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if not files:
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retval.append(d)
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continue
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for f in files:
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file_to_check = os.path.join(d, f)
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try:
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with open(file_to_check, 'rb') as fd:
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header = fd.read(5)
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# if file is not an ELF file, it's weird, but accept dir
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# if it is elf, and the class matches, accept dir
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if header[1:4] != b'ELF' or int(header[4]) == elf_class:
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retval.append(d)
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# at this point, it's an ELF file which doesn't match the
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# appropriate elf_class, so skip this one
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# stop scanning after the first successful read
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break
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except OSError:
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# Skip the file if we can't read it
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pass
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return retval
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def get_library_dirs(self, env: 'Environment',
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elf_class: T.Optional[int] = None) -> T.List[str]:
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"""Wrap the lru_cache so that we return a new copy and don't allow
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mutation of the cached value.
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"""
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return self._get_library_dirs(env, elf_class).copy()
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@functools.lru_cache()
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def _get_program_dirs(self, env: 'Environment') -> 'ImmutableListProtocol[str]':
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'''
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Programs used by the compiler. Also where toolchain DLLs such as
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libstdc++-6.dll are found with MinGW.
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'''
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return self.get_compiler_dirs(env, 'programs')
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def get_program_dirs(self, env: 'Environment') -> T.List[str]:
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return self._get_program_dirs(env).copy()
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def get_pic_args(self) -> T.List[str]:
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return ['-fPIC']
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def get_pch_use_args(self, pch_dir: str, header: str) -> T.List[str]:
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return ['-include', os.path.basename(header)]
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def get_pch_name(self, name: str) -> str:
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return os.path.basename(name) + '.' + self.get_pch_suffix()
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def get_default_include_dirs(self) -> T.List[str]:
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return []
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def gen_export_dynamic_link_args(self, env: 'Environment') -> T.List[str]:
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return self.linker.export_dynamic_args(env)
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def gen_import_library_args(self, implibname: str) -> T.List[str]:
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return self.linker.import_library_args(implibname)
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def _sanity_check_impl(self, work_dir: str, environment: 'Environment',
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sname: str, code: str) -> None:
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mlog.debug('Sanity testing ' + self.get_display_language() + ' compiler:', ' '.join(self.exelist))
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mlog.debug(f'Is cross compiler: {self.is_cross!s}.')
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source_name = os.path.join(work_dir, sname)
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binname = sname.rsplit('.', 1)[0]
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mode = CompileCheckMode.LINK
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if self.is_cross:
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binname += '_cross'
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if self.exe_wrapper is None:
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# Linking cross built apps is painful. You can't really
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# tell if you should use -nostdlib or not and for example
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# on OSX the compiler binary is the same but you need
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# a ton of compiler flags to differentiate between
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# arm and x86_64. So just compile.
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mode = CompileCheckMode.COMPILE
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cargs, largs = self._get_basic_compiler_args(environment, mode)
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extra_flags = cargs + self.linker_to_compiler_args(largs)
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# Is a valid executable output for all toolchains and platforms
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binname += '.exe'
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# Write binary check source
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binary_name = os.path.join(work_dir, binname)
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with open(source_name, 'w', encoding='utf-8') as ofile:
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ofile.write(code)
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# Compile sanity check
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# NOTE: extra_flags must be added at the end. On MSVC, it might contain a '/link' argument
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# after which all further arguments will be passed directly to the linker
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cmdlist = self.exelist + [sname] + self.get_output_args(binname) + extra_flags
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pc, stdo, stde = mesonlib.Popen_safe(cmdlist, cwd=work_dir)
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mlog.debug('Sanity check compiler command line:', ' '.join(cmdlist))
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mlog.debug('Sanity check compile stdout:')
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mlog.debug(stdo)
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mlog.debug('-----\nSanity check compile stderr:')
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mlog.debug(stde)
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mlog.debug('-----')
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if pc.returncode != 0:
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raise mesonlib.EnvironmentException(f'Compiler {self.name_string()} can not compile programs.')
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# Run sanity check
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if self.is_cross:
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if self.exe_wrapper is None:
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# Can't check if the binaries run so we have to assume they do
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return
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cmdlist = self.exe_wrapper.get_command() + [binary_name]
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else:
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cmdlist = [binary_name]
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mlog.debug('Running test binary command: ' + ' '.join(cmdlist))
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try:
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pe = subprocess.Popen(cmdlist)
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except Exception as e:
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raise mesonlib.EnvironmentException(f'Could not invoke sanity test executable: {e!s}.')
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pe.wait()
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if pe.returncode != 0:
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raise mesonlib.EnvironmentException(f'Executables created by {self.language} compiler {self.name_string()} are not runnable.')
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|
|
|
|
|
def sanity_check(self, work_dir: str, environment: 'Environment') -> None:
|
|
|
|
code = 'int main(void) { int class=0; return class; }\n'
|
|
|
|
return self._sanity_check_impl(work_dir, environment, 'sanitycheckc.c', code)
|
|
|
|
|
|
|
|
def check_header(self, hname: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[['CompileCheckMode'], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> T.Tuple[bool, bool]:
|
|
|
|
code = f'''{prefix}
|
|
|
|
#include <{hname}>'''
|
|
|
|
return self.compiles(code, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
|
|
|
|
def has_header(self, hname: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[['CompileCheckMode'], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None,
|
|
|
|
disable_cache: bool = False) -> T.Tuple[bool, bool]:
|
|
|
|
code = f'''{prefix}
|
|
|
|
#ifdef __has_include
|
|
|
|
#if !__has_include("{hname}")
|
|
|
|
#error "Header '{hname}' could not be found"
|
|
|
|
#endif
|
|
|
|
#else
|
|
|
|
#include <{hname}>
|
|
|
|
#endif'''
|
|
|
|
return self.compiles(code, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies, mode='preprocess', disable_cache=disable_cache)
|
|
|
|
|
|
|
|
def has_header_symbol(self, hname: str, symbol: str, prefix: str,
|
|
|
|
env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> T.Tuple[bool, bool]:
|
|
|
|
t = f'''{prefix}
|
|
|
|
#include <{hname}>
|
|
|
|
int main(void) {{
|
|
|
|
/* If it's not defined as a macro, try to use as a symbol */
|
|
|
|
#ifndef {symbol}
|
|
|
|
{symbol};
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
return self.compiles(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
|
|
|
|
def _get_basic_compiler_args(self, env: 'Environment', mode: CompileCheckMode) -> T.Tuple[T.List[str], T.List[str]]:
|
|
|
|
cargs = [] # type: T.List[str]
|
|
|
|
largs = [] # type: T.List[str]
|
|
|
|
if mode is CompileCheckMode.LINK:
|
|
|
|
# Sometimes we need to manually select the CRT to use with MSVC.
|
|
|
|
# One example is when trying to do a compiler check that involves
|
|
|
|
# linking with static libraries since MSVC won't select a CRT for
|
|
|
|
# us in that case and will error out asking us to pick one.
|
|
|
|
try:
|
|
|
|
crt_val = env.coredata.options[OptionKey('b_vscrt')].value
|
|
|
|
buildtype = env.coredata.options[OptionKey('buildtype')].value
|
|
|
|
cargs += self.get_crt_compile_args(crt_val, buildtype)
|
|
|
|
except (KeyError, AttributeError):
|
|
|
|
pass
|
|
|
|
|
|
|
|
# Add CFLAGS/CXXFLAGS/OBJCFLAGS/OBJCXXFLAGS and CPPFLAGS from the env
|
|
|
|
sys_args = env.coredata.get_external_args(self.for_machine, self.language)
|
|
|
|
if isinstance(sys_args, str):
|
|
|
|
sys_args = [sys_args]
|
|
|
|
# Apparently it is a thing to inject linker flags both
|
|
|
|
# via CFLAGS _and_ LDFLAGS, even though the former are
|
|
|
|
# also used during linking. These flags can break
|
|
|
|
# argument checks. Thanks, Autotools.
|
|
|
|
cleaned_sys_args = self.remove_linkerlike_args(sys_args)
|
|
|
|
cargs += cleaned_sys_args
|
|
|
|
|
|
|
|
if mode is CompileCheckMode.LINK:
|
|
|
|
ld_value = env.lookup_binary_entry(self.for_machine, self.language + '_ld')
|
|
|
|
if ld_value is not None:
|
|
|
|
largs += self.use_linker_args(ld_value[0], self.version)
|
|
|
|
|
|
|
|
# Add LDFLAGS from the env
|
|
|
|
sys_ld_args = env.coredata.get_external_link_args(self.for_machine, self.language)
|
|
|
|
# CFLAGS and CXXFLAGS go to both linking and compiling, but we want them
|
|
|
|
# to only appear on the command line once. Remove dupes.
|
|
|
|
largs += [x for x in sys_ld_args if x not in sys_args]
|
|
|
|
|
|
|
|
cargs += self.get_compiler_args_for_mode(mode)
|
|
|
|
return cargs, largs
|
|
|
|
|
|
|
|
def build_wrapper_args(self, env: 'Environment',
|
|
|
|
extra_args: T.Union[None, arglist.CompilerArgs, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]],
|
|
|
|
dependencies: T.Optional[T.List['Dependency']],
|
|
|
|
mode: CompileCheckMode = CompileCheckMode.COMPILE) -> arglist.CompilerArgs:
|
|
|
|
# TODO: the caller should handle the listfing of these arguments
|
|
|
|
if extra_args is None:
|
|
|
|
extra_args = []
|
|
|
|
else:
|
|
|
|
# TODO: we want to do this in the caller
|
|
|
|
extra_args = mesonlib.listify(extra_args)
|
|
|
|
extra_args = mesonlib.listify([e(mode.value) if callable(e) else e for e in extra_args])
|
|
|
|
|
|
|
|
if dependencies is None:
|
|
|
|
dependencies = []
|
|
|
|
elif not isinstance(dependencies, collections.abc.Iterable):
|
|
|
|
# TODO: we want to ensure the front end does the listifing here
|
|
|
|
dependencies = [dependencies]
|
|
|
|
# Collect compiler arguments
|
|
|
|
cargs = self.compiler_args() # type: arglist.CompilerArgs
|
|
|
|
largs = [] # type: T.List[str]
|
|
|
|
for d in dependencies:
|
|
|
|
# Add compile flags needed by dependencies
|
|
|
|
cargs += d.get_compile_args()
|
|
|
|
if mode is CompileCheckMode.LINK:
|
|
|
|
# Add link flags needed to find dependencies
|
|
|
|
largs += d.get_link_args()
|
|
|
|
|
|
|
|
ca, la = self._get_basic_compiler_args(env, mode)
|
|
|
|
cargs += ca
|
|
|
|
largs += la
|
|
|
|
|
|
|
|
cargs += self.get_compiler_check_args(mode)
|
|
|
|
|
|
|
|
# on MSVC compiler and linker flags must be separated by the "/link" argument
|
|
|
|
# at this point, the '/link' argument may already be part of extra_args, otherwise, it is added here
|
|
|
|
if self.linker_to_compiler_args([]) == ['/link'] and largs != [] and '/link' not in extra_args:
|
|
|
|
extra_args += ['/link']
|
|
|
|
|
|
|
|
args = cargs + extra_args + largs
|
|
|
|
return args
|
|
|
|
|
|
|
|
def run(self, code: 'mesonlib.FileOrString', env: 'Environment', *,
|
|
|
|
extra_args: T.Union[T.List[str], T.Callable[[CompileCheckMode], T.List[str]], None] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> compilers.RunResult:
|
|
|
|
need_exe_wrapper = env.need_exe_wrapper(self.for_machine)
|
|
|
|
if need_exe_wrapper and self.exe_wrapper is None:
|
|
|
|
raise compilers.CrossNoRunException('Can not run test applications in this cross environment.')
|
|
|
|
with self._build_wrapper(code, env, extra_args, dependencies, mode='link', want_output=True) as p:
|
|
|
|
if p.returncode != 0:
|
|
|
|
mlog.debug(f'Could not compile test file {p.input_name}: {p.returncode}\n')
|
|
|
|
return compilers.RunResult(False)
|
|
|
|
if need_exe_wrapper:
|
|
|
|
cmdlist = self.exe_wrapper.get_command() + [p.output_name]
|
|
|
|
else:
|
|
|
|
cmdlist = [p.output_name]
|
|
|
|
try:
|
|
|
|
pe, so, se = mesonlib.Popen_safe(cmdlist)
|
|
|
|
except Exception as e:
|
|
|
|
mlog.debug(f'Could not run: {cmdlist} (error: {e})\n')
|
|
|
|
return compilers.RunResult(False)
|
|
|
|
|
|
|
|
mlog.debug('Program stdout:\n')
|
|
|
|
mlog.debug(so)
|
|
|
|
mlog.debug('Program stderr:\n')
|
|
|
|
mlog.debug(se)
|
|
|
|
return compilers.RunResult(True, pe.returncode, so, se)
|
|
|
|
|
|
|
|
def _compile_int(self, expression: str, prefix: str, env: 'Environment',
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]],
|
|
|
|
dependencies: T.Optional[T.List['Dependency']]) -> bool:
|
|
|
|
t = f'''#include <stdio.h>
|
|
|
|
{prefix}
|
|
|
|
int main(void) {{ static int a[1-2*!({expression})]; a[0]=0; return 0; }}'''
|
|
|
|
return self.compiles(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)[0]
|
|
|
|
|
|
|
|
def cross_compute_int(self, expression: str, low: T.Optional[int], high: T.Optional[int],
|
|
|
|
guess: T.Optional[int], prefix: str, env: 'Environment',
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> int:
|
|
|
|
# Try user's guess first
|
|
|
|
if isinstance(guess, int):
|
|
|
|
if self._compile_int(f'{expression} == {guess}', prefix, env, extra_args, dependencies):
|
|
|
|
return guess
|
|
|
|
|
|
|
|
# If no bounds are given, compute them in the limit of int32
|
|
|
|
maxint = 0x7fffffff
|
|
|
|
minint = -0x80000000
|
|
|
|
if not isinstance(low, int) or not isinstance(high, int):
|
|
|
|
if self._compile_int(f'{expression} >= 0', prefix, env, extra_args, dependencies):
|
|
|
|
low = cur = 0
|
|
|
|
while self._compile_int(f'{expression} > {cur}', prefix, env, extra_args, dependencies):
|
|
|
|
low = cur + 1
|
|
|
|
if low > maxint:
|
|
|
|
raise mesonlib.EnvironmentException('Cross-compile check overflowed')
|
|
|
|
cur = cur * 2 + 1
|
|
|
|
if cur > maxint:
|
|
|
|
cur = maxint
|
|
|
|
high = cur
|
|
|
|
else:
|
|
|
|
high = cur = -1
|
|
|
|
while self._compile_int(f'{expression} < {cur}', prefix, env, extra_args, dependencies):
|
|
|
|
high = cur - 1
|
|
|
|
if high < minint:
|
|
|
|
raise mesonlib.EnvironmentException('Cross-compile check overflowed')
|
|
|
|
cur = cur * 2
|
|
|
|
if cur < minint:
|
|
|
|
cur = minint
|
|
|
|
low = cur
|
|
|
|
else:
|
|
|
|
# Sanity check limits given by user
|
|
|
|
if high < low:
|
|
|
|
raise mesonlib.EnvironmentException('high limit smaller than low limit')
|
|
|
|
condition = f'{expression} <= {high} && {expression} >= {low}'
|
|
|
|
if not self._compile_int(condition, prefix, env, extra_args, dependencies):
|
|
|
|
raise mesonlib.EnvironmentException('Value out of given range')
|
|
|
|
|
|
|
|
# Binary search
|
|
|
|
while low != high:
|
|
|
|
cur = low + int((high - low) / 2)
|
|
|
|
if self._compile_int(f'{expression} <= {cur}', prefix, env, extra_args, dependencies):
|
|
|
|
high = cur
|
|
|
|
else:
|
|
|
|
low = cur + 1
|
|
|
|
|
|
|
|
return low
|
|
|
|
|
|
|
|
def compute_int(self, expression: str, low: T.Optional[int], high: T.Optional[int],
|
|
|
|
guess: T.Optional[int], prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]],
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> int:
|
|
|
|
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)
|
|
|
|
t = f'''#include<stdio.h>
|
|
|
|
{prefix}
|
|
|
|
int main(void) {{
|
|
|
|
printf("%ld\\n", (long)({expression}));
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
res = self.run(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
if not res.compiled:
|
|
|
|
return -1
|
|
|
|
if res.returncode != 0:
|
|
|
|
raise mesonlib.EnvironmentException('Could not run compute_int test binary.')
|
|
|
|
return int(res.stdout)
|
|
|
|
|
|
|
|
def cross_sizeof(self, typename: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> int:
|
|
|
|
if extra_args is None:
|
|
|
|
extra_args = []
|
|
|
|
t = f'''#include <stdio.h>
|
|
|
|
{prefix}
|
|
|
|
int main(void) {{
|
|
|
|
{typename} something;
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
if not self.compiles(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)[0]:
|
|
|
|
return -1
|
|
|
|
return self.cross_compute_int(f'sizeof({typename})', None, None, None, prefix, env, extra_args, dependencies)
|
|
|
|
|
|
|
|
def sizeof(self, typename: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> int:
|
|
|
|
if extra_args is None:
|
|
|
|
extra_args = []
|
|
|
|
if self.is_cross:
|
|
|
|
return self.cross_sizeof(typename, prefix, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
t = f'''#include<stdio.h>
|
|
|
|
{prefix}
|
|
|
|
int main(void) {{
|
|
|
|
printf("%ld\\n", (long)(sizeof({typename})));
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
res = self.run(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
if not res.compiled:
|
|
|
|
return -1
|
|
|
|
if res.returncode != 0:
|
|
|
|
raise mesonlib.EnvironmentException('Could not run sizeof test binary.')
|
|
|
|
return int(res.stdout)
|
|
|
|
|
|
|
|
def cross_alignment(self, typename: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Optional[T.List[str]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> int:
|
|
|
|
if extra_args is None:
|
|
|
|
extra_args = []
|
|
|
|
t = f'''#include <stdio.h>
|
|
|
|
{prefix}
|
|
|
|
int main(void) {{
|
|
|
|
{typename} something;
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
if not self.compiles(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)[0]:
|
|
|
|
return -1
|
|
|
|
t = f'''#include <stddef.h>
|
|
|
|
{prefix}
|
|
|
|
struct tmp {{
|
|
|
|
char c;
|
|
|
|
{typename} target;
|
|
|
|
}};'''
|
|
|
|
return self.cross_compute_int('offsetof(struct tmp, target)', None, None, None, t, env, extra_args, dependencies)
|
|
|
|
|
|
|
|
def alignment(self, typename: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Optional[T.List[str]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> int:
|
|
|
|
if extra_args is None:
|
|
|
|
extra_args = []
|
|
|
|
if self.is_cross:
|
|
|
|
return self.cross_alignment(typename, prefix, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
t = f'''#include <stdio.h>
|
|
|
|
#include <stddef.h>
|
|
|
|
{prefix}
|
|
|
|
struct tmp {{
|
|
|
|
char c;
|
|
|
|
{typename} target;
|
|
|
|
}};
|
|
|
|
int main(void) {{
|
|
|
|
printf("%d", (int)offsetof(struct tmp, target));
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
res = self.run(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
if not res.compiled:
|
|
|
|
raise mesonlib.EnvironmentException('Could not compile alignment test.')
|
|
|
|
if res.returncode != 0:
|
|
|
|
raise mesonlib.EnvironmentException('Could not run alignment test binary.')
|
|
|
|
align = int(res.stdout)
|
|
|
|
if align == 0:
|
|
|
|
raise mesonlib.EnvironmentException(f'Could not determine alignment of {typename}. Sorry. You might want to file a bug.')
|
|
|
|
return align
|
|
|
|
|
|
|
|
def get_define(self, dname: str, prefix: str, env: 'Environment',
|
|
|
|
extra_args: T.Union[T.List[str], T.Callable[[CompileCheckMode], T.List[str]]],
|
|
|
|
dependencies: T.Optional[T.List['Dependency']],
|
|
|
|
disable_cache: bool = False) -> T.Tuple[str, bool]:
|
|
|
|
delim = '"MESON_GET_DEFINE_DELIMITER"'
|
|
|
|
code = f'''
|
|
|
|
{prefix}
|
|
|
|
#ifndef {dname}
|
|
|
|
# define {dname}
|
|
|
|
#endif
|
|
|
|
{delim}\n{dname}'''
|
|
|
|
args = self.build_wrapper_args(env, extra_args, dependencies,
|
|
|
|
mode=CompileCheckMode.PREPROCESS).to_native()
|
|
|
|
func = functools.partial(self.cached_compile, code, env.coredata, extra_args=args, mode='preprocess')
|
|
|
|
if disable_cache:
|
|
|
|
func = functools.partial(self.compile, code, extra_args=args, mode='preprocess', temp_dir=env.scratch_dir)
|
|
|
|
with func() as p:
|
|
|
|
cached = p.cached
|
|
|
|
if p.returncode != 0:
|
|
|
|
raise mesonlib.EnvironmentException(f'Could not get define {dname!r}')
|
|
|
|
# Get the preprocessed value after the delimiter,
|
|
|
|
# minus the extra newline at the end and
|
|
|
|
# merge string literals.
|
|
|
|
return self._concatenate_string_literals(p.stdout.split(delim + '\n')[-1][:-1]), cached
|
|
|
|
|
|
|
|
def get_return_value(self, fname: str, rtype: str, prefix: str,
|
|
|
|
env: 'Environment', extra_args: T.Optional[T.List[str]],
|
|
|
|
dependencies: T.Optional[T.List['Dependency']]) -> T.Union[str, int]:
|
|
|
|
# TODO: rtype should be an enum.
|
|
|
|
# TODO: maybe we can use overload to tell mypy when this will return int vs str?
|
|
|
|
if rtype == 'string':
|
|
|
|
fmt = '%s'
|
|
|
|
cast = '(char*)'
|
|
|
|
elif rtype == 'int':
|
|
|
|
fmt = '%lli'
|
|
|
|
cast = '(long long int)'
|
|
|
|
else:
|
|
|
|
raise AssertionError(f'BUG: Unknown return type {rtype!r}')
|
|
|
|
code = f'''{prefix}
|
|
|
|
#include <stdio.h>
|
|
|
|
int main(void) {{
|
|
|
|
printf ("{fmt}", {cast} {fname}());
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
res = self.run(code, env, extra_args=extra_args, dependencies=dependencies)
|
|
|
|
if not res.compiled:
|
|
|
|
raise mesonlib.EnvironmentException(f'Could not get return value of {fname}()')
|
|
|
|
if rtype == 'string':
|
|
|
|
return res.stdout
|
|
|
|
elif rtype == 'int':
|
|
|
|
try:
|
|
|
|
return int(res.stdout.strip())
|
|
|
|
except ValueError:
|
|
|
|
raise mesonlib.EnvironmentException(f'Return value of {fname}() is not an int')
|
|
|
|
assert False, 'Unreachable'
|
|
|
|
|
|
|
|
@staticmethod
|
|
|
|
def _no_prototype_templ() -> T.Tuple[str, str]:
|
|
|
|
"""
|
|
|
|
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} (void);
|
|
|
|
'''
|
|
|
|
# The actual function call
|
|
|
|
main = '''
|
|
|
|
int main(void) {{
|
|
|
|
return {func} ();
|
|
|
|
}}'''
|
|
|
|
return head, main
|
|
|
|
|
|
|
|
@staticmethod
|
|
|
|
def _have_prototype_templ() -> T.Tuple[str, str]:
|
|
|
|
"""
|
|
|
|
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) {{
|
|
|
|
void *a = (void*) &{func};
|
|
|
|
long long b = (long long) a;
|
|
|
|
return (int) b;
|
|
|
|
}}'''
|
|
|
|
return head, main
|
|
|
|
|
|
|
|
def has_function(self, funcname: str, prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Optional[T.List[str]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> T.Tuple[bool, bool]:
|
|
|
|
"""Determine if a function exists.
|
|
|
|
|
|
|
|
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.properties.host.get(varname, None)
|
|
|
|
if val is not None:
|
|
|
|
if isinstance(val, bool):
|
|
|
|
return val, False
|
|
|
|
raise mesonlib.EnvironmentException(f'Cross variable {varname} is not a boolean.')
|
|
|
|
|
|
|
|
# TODO: we really need a protocol for this,
|
|
|
|
#
|
|
|
|
# class StrProto(typing.Protocol):
|
|
|
|
# def __str__(self) -> str: ...
|
|
|
|
fargs = {'prefix': prefix, 'func': funcname} # type: T.Dict[str, T.Union[str, bool, int]]
|
|
|
|
|
|
|
|
# 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
|
|
|
|
|
|
|
|
res, cached = self.links(templ.format(**fargs), env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
if res:
|
|
|
|
return True, cached
|
|
|
|
|
|
|
|
# MSVC does not have compiler __builtin_-s.
|
|
|
|
if self.get_id() in {'msvc', 'intel-cl'}:
|
|
|
|
return False, 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
|
|
|
|
is_builtin = funcname.startswith('__builtin_')
|
|
|
|
fargs['is_builtin'] = is_builtin
|
|
|
|
fargs['__builtin_'] = '' if is_builtin else '__builtin_'
|
|
|
|
t = '''{prefix}
|
|
|
|
int main(void) {{
|
|
|
|
|
|
|
|
/* With some toolchains (MSYS2/mingw for example) the compiler
|
|
|
|
* provides various builtins which are not really implemented and
|
|
|
|
* fall back to the stdlib where they aren't provided and fail at
|
|
|
|
* build/link time. In case the user provides a header, including
|
|
|
|
* the header didn't lead to the function being defined, and the
|
|
|
|
* function we are checking isn't a builtin itself we assume the
|
|
|
|
* builtin is not functional and we just error out. */
|
|
|
|
#if !{no_includes:d} && !defined({func}) && !{is_builtin:d}
|
|
|
|
#error "No definition for {__builtin_}{func} found in the prefix"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef __has_builtin
|
|
|
|
#if !__has_builtin({__builtin_}{func})
|
|
|
|
#error "{__builtin_}{func} not found"
|
|
|
|
#endif
|
|
|
|
#elif ! defined({func})
|
|
|
|
{__builtin_}{func};
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}}'''
|
|
|
|
return self.links(t.format(**fargs), env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
|
|
|
|
def has_members(self, typename: str, membernames: T.List[str],
|
|
|
|
prefix: str, env: 'Environment', *,
|
|
|
|
extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> T.Tuple[bool, bool]:
|
|
|
|
if extra_args is None:
|
|
|
|
extra_args = []
|
|
|
|
# Create code that accesses all members
|
|
|
|
members = ''
|
|
|
|
for member in membernames:
|
|
|
|
members += f'foo.{member};\n'
|
|
|
|
t = f'''{prefix}
|
|
|
|
void bar(void) {{
|
|
|
|
{typename} foo;
|
|
|
|
{members}
|
|
|
|
}}'''
|
|
|
|
return self.compiles(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
|
|
|
|
def has_type(self, typename: str, prefix: str, env: 'Environment',
|
|
|
|
extra_args: T.Union[T.List[str], T.Callable[[CompileCheckMode], T.List[str]]], *,
|
|
|
|
dependencies: T.Optional[T.List['Dependency']] = None) -> T.Tuple[bool, bool]:
|
|
|
|
t = f'''{prefix}
|
|
|
|
void bar(void) {{
|
|
|
|
sizeof({typename});
|
|
|
|
}}'''
|
|
|
|
return self.compiles(t, env, extra_args=extra_args,
|
|
|
|
dependencies=dependencies)
|
|
|
|
|
|
|
|
def _symbols_have_underscore_prefix_searchbin(self, env: 'Environment') -> bool:
|
|
|
|
'''
|
|
|
|
Check if symbols have underscore prefix by compiling a small test binary
|
|
|
|
and then searching the binary for the string,
|
|
|
|
'''
|
|
|
|
symbol_name = b'meson_uscore_prefix'
|
|
|
|
code = '''#ifdef __cplusplus
|
|
|
|
extern "C" {
|
|
|
|
#endif
|
|
|
|
void ''' + symbol_name.decode() + ''' (void) {}
|
|
|
|
#ifdef __cplusplus
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
'''
|
|
|
|
args = self.get_compiler_check_args(CompileCheckMode.COMPILE)
|
|
|
|
n = '_symbols_have_underscore_prefix_searchbin'
|
|
|
|
with self._build_wrapper(code, env, extra_args=args, mode='compile', want_output=True, temp_dir=env.scratch_dir) as p:
|
|
|
|
if p.returncode != 0:
|
|
|
|
raise RuntimeError(f'BUG: Unable to compile {n!r} check: {p.stderr}')
|
|
|
|
if not os.path.isfile(p.output_name):
|
|
|
|
raise RuntimeError(f'BUG: Can\'t find compiled test code for {n!r} check')
|
|
|
|
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:
|
|
|
|
mlog.debug("Underscore prefix check found prefixed function in binary")
|
|
|
|
return True
|
|
|
|
# Else, check if the non-underscored form is present
|
|
|
|
elif symbol_name in line:
|
|
|
|
mlog.debug("Underscore prefix check found non-prefixed function in binary")
|
|
|
|
return False
|
|
|
|
raise RuntimeError(f'BUG: {n!r} check did not find symbol string in binary')
|
|
|
|
|
|
|
|
def _symbols_have_underscore_prefix_define(self, env: 'Environment') -> T.Optional[bool]:
|
|
|
|
'''
|
|
|
|
Check if symbols have underscore prefix by querying the
|
|
|
|
__USER_LABEL_PREFIX__ define that most compilers provide
|
|
|
|
for this. Return if functions have underscore prefix or None
|
|
|
|
if it was not possible to determine, like when the compiler
|
|
|
|
does not set the define or the define has an unexpected value.
|
|
|
|
'''
|
|
|
|
delim = '"MESON_HAVE_UNDERSCORE_DELIMITER" '
|
|
|
|
code = f'''
|
|
|
|
#ifndef __USER_LABEL_PREFIX__
|
|
|
|
#define MESON_UNDERSCORE_PREFIX unsupported
|
|
|
|
#else
|
|
|
|
#define MESON_UNDERSCORE_PREFIX __USER_LABEL_PREFIX__
|
|
|
|
#endif
|
|
|
|
{delim}MESON_UNDERSCORE_PREFIX
|
|
|
|
'''
|
|
|
|
with self._build_wrapper(code, env, mode='preprocess', want_output=False, temp_dir=env.scratch_dir) as p:
|
|
|
|
if p.returncode != 0:
|
|
|
|
raise RuntimeError(f'BUG: Unable to preprocess _symbols_have_underscore_prefix_define check: {p.stdout}')
|
|
|
|
symbol_prefix = p.stdout.partition(delim)[-1].rstrip()
|
|
|
|
|
|
|
|
mlog.debug(f'Queried compiler for function prefix: __USER_LABEL_PREFIX__ is "{symbol_prefix!s}"')
|
|
|
|
if symbol_prefix == '_':
|
|
|
|
return True
|
|
|
|
elif symbol_prefix == '':
|
|
|
|
return False
|
|
|
|
else:
|
|
|
|
return None
|
|
|
|
|
|
|
|
def _symbols_have_underscore_prefix_list(self, env: 'Environment') -> T.Optional[bool]:
|
|
|
|
'''
|
|
|
|
Check if symbols have underscore prefix by consulting a hardcoded
|
|
|
|
list of cases where we know the results.
|
|
|
|
Return if functions have underscore prefix or None if unknown.
|
|
|
|
'''
|
|
|
|
m = env.machines[self.for_machine]
|
|
|
|
# Darwin always uses the underscore prefix, not matter what
|
|
|
|
if m.is_darwin():
|
|
|
|
return True
|
|
|
|
# Windows uses the underscore prefix on x86 (32bit) only
|
|
|
|
if m.is_windows() or m.is_cygwin():
|
|
|
|
return m.cpu_family == 'x86'
|
|
|
|
return None
|
|
|
|
|
|
|
|
def symbols_have_underscore_prefix(self, env: 'Environment') -> bool:
|
|
|
|
'''
|
|
|
|
Check if the compiler prefixes an underscore to global C symbols
|
|
|
|
'''
|
|
|
|
# First, try to query the compiler directly
|
|
|
|
result = self._symbols_have_underscore_prefix_define(env)
|
|
|
|
if result is not None:
|
|
|
|
return result
|
|
|
|
|
|
|
|
# Else, try to consult a hardcoded list of cases we know
|
|
|
|
# absolutely have an underscore prefix
|
|
|
|
result = self._symbols_have_underscore_prefix_list(env)
|
|
|
|
if result is not None:
|
|
|
|
return result
|
|
|
|
|
|
|
|
# As a last resort, try search in a compiled binary, which is the
|
|
|
|
# most unreliable way of checking this, see #5482
|
|
|
|
return self._symbols_have_underscore_prefix_searchbin(env)
|
|
|
|
|
|
|
|
def _get_patterns(self, env: 'Environment', prefixes: T.List[str], suffixes: T.List[str], shared: bool = False) -> T.List[str]:
|
|
|
|
patterns = [] # type: T.List[str]
|
|
|
|
for p in prefixes:
|
|
|
|
for s in suffixes:
|
|
|
|
patterns.append(p + '{}.' + s)
|
|
|
|
if shared and env.machines[self.for_machine].is_openbsd():
|
|
|
|
# Shared libraries on OpenBSD can be named libfoo.so.X.Y:
|
|
|
|
# https://www.openbsd.org/faq/ports/specialtopics.html#SharedLibs
|
|
|
|
#
|
|
|
|
# This globbing is probably the best matching we can do since regex
|
|
|
|
# is expensive. It's wrong in many edge cases, but it will match
|
|
|
|
# correctly-named libraries and hopefully no one on OpenBSD names
|
|
|
|
# their files libfoo.so.9a.7b.1.0
|
|
|
|
for p in prefixes:
|
|
|
|
patterns.append(p + '{}.so.[0-9]*.[0-9]*')
|
|
|
|
return patterns
|
|
|
|
|
|
|
|
def get_library_naming(self, env: 'Environment', libtype: LibType, strict: bool = False) -> T.Tuple[str, ...]:
|
|
|
|
'''
|
|
|
|
Get library prefixes and suffixes for the target platform ordered by
|
|
|
|
priority
|
|
|
|
'''
|
|
|
|
stlibext = ['a']
|
|
|
|
# We've always allowed libname to be both `foo` and `libfoo`, and now
|
|
|
|
# people depend on it. Also, some people use prebuilt `foo.so` instead
|
|
|
|
# of `libfoo.so` for unknown reasons, and may also want to create
|
|
|
|
# `foo.so` by setting name_prefix to ''
|
|
|
|
if strict and not isinstance(self, VisualStudioLikeCompiler): # lib prefix is not usually used with msvc
|
|
|
|
prefixes = ['lib']
|
|
|
|
else:
|
|
|
|
prefixes = ['lib', '']
|
|
|
|
# Library suffixes and prefixes
|
|
|
|
if env.machines[self.for_machine].is_darwin():
|
|
|
|
shlibext = ['dylib', 'so']
|
|
|
|
elif env.machines[self.for_machine].is_windows():
|
|
|
|
# FIXME: .lib files can be import or static so we should read the
|
|
|
|
# file, figure out which one it is, and reject the wrong kind.
|
|
|
|
if isinstance(self, VisualStudioLikeCompiler):
|
|
|
|
shlibext = ['lib']
|
|
|
|
else:
|
|
|
|
shlibext = ['dll.a', 'lib', 'dll']
|
|
|
|
# Yep, static libraries can also be foo.lib
|
|
|
|
stlibext += ['lib']
|
|
|
|
elif env.machines[self.for_machine].is_cygwin():
|
|
|
|
shlibext = ['dll', 'dll.a']
|
|
|
|
prefixes = ['cyg'] + prefixes
|
|
|
|
else:
|
|
|
|
# Linux/BSDs
|
|
|
|
shlibext = ['so']
|
|
|
|
# Search priority
|
|
|
|
if libtype is LibType.PREFER_SHARED:
|
|
|
|
patterns = self._get_patterns(env, prefixes, shlibext, True)
|
|
|
|
patterns.extend([x for x in self._get_patterns(env, prefixes, stlibext, False) if x not in patterns])
|
|
|
|
elif libtype is LibType.PREFER_STATIC:
|
|
|
|
patterns = self._get_patterns(env, prefixes, stlibext, False)
|
|
|
|
patterns.extend([x for x in self._get_patterns(env, prefixes, shlibext, True) if x not in patterns])
|
|
|
|
elif libtype is LibType.SHARED:
|
|
|
|
patterns = self._get_patterns(env, prefixes, shlibext, True)
|
|
|
|
else:
|
|
|
|
assert libtype is LibType.STATIC
|
|
|
|
patterns = self._get_patterns(env, prefixes, stlibext, False)
|
|
|
|
return tuple(patterns)
|
|
|
|
|
|
|
|
@staticmethod
|
|
|
|
def _sort_shlibs_openbsd(libs: T.List[str]) -> T.List[str]:
|
|
|
|
filtered = [] # type: T.List[str]
|
|
|
|
for lib in libs:
|
|
|
|
# Validate file as a shared library of type libfoo.so.X.Y
|
|
|
|
ret = lib.rsplit('.so.', maxsplit=1)
|
|
|
|
if len(ret) != 2:
|
|
|
|
continue
|
|
|
|
try:
|
|
|
|
float(ret[1])
|
|
|
|
except ValueError:
|
|
|
|
continue
|
|
|
|
filtered.append(lib)
|
|
|
|
float_cmp = lambda x: float(x.rsplit('.so.', maxsplit=1)[1])
|
|
|
|
return sorted(filtered, key=float_cmp, reverse=True)
|
|
|
|
|
|
|
|
@classmethod
|
|
|
|
def _get_trials_from_pattern(cls, pattern: str, directory: str, libname: str) -> T.List[Path]:
|
|
|
|
f = Path(directory) / pattern.format(libname)
|
|
|
|
# Globbing for OpenBSD
|
|
|
|
if '*' in pattern:
|
|
|
|
# NOTE: globbing matches directories and broken symlinks
|
|
|
|
# so we have to do an isfile test on it later
|
|
|
|
return [Path(x) for x in cls._sort_shlibs_openbsd(glob.glob(str(f)))]
|
|
|
|
return [f]
|
|
|
|
|
|
|
|
@staticmethod
|
|
|
|
def _get_file_from_list(env: 'Environment', paths: T.List[Path]) -> Path:
|
|
|
|
'''
|
|
|
|
We just check whether the library exists. We can't do a link check
|
|
|
|
because the library might have unresolved symbols that require other
|
|
|
|
libraries. On macOS we check if the library matches our target
|
|
|
|
architecture.
|
|
|
|
'''
|
|
|
|
# If not building on macOS for Darwin, do a simple file check
|
|
|
|
if not env.machines.host.is_darwin() or not env.machines.build.is_darwin():
|
|
|
|
for p in paths:
|
|
|
|
if p.is_file():
|
|
|
|
return p
|
|
|
|
# Run `lipo` and check if the library supports the arch we want
|
|
|
|
for p in paths:
|
|
|
|
if not p.is_file():
|
|
|
|
continue
|
|
|
|
archs = mesonlib.darwin_get_object_archs(str(p))
|
|
|
|
if archs and env.machines.host.cpu_family in archs:
|
|
|
|
return p
|
|
|
|
else:
|
|
|
|
mlog.debug(f'Rejected {p}, supports {archs} but need {env.machines.host.cpu_family}')
|
|
|
|
return None
|
|
|
|
|
|
|
|
@functools.lru_cache()
|
|
|
|
def output_is_64bit(self, env: 'Environment') -> bool:
|
|
|
|
'''
|
|
|
|
returns true if the output produced is 64-bit, false if 32-bit
|
|
|
|
'''
|
|
|
|
return self.sizeof('void *', '', env) == 8
|
|
|
|
|
|
|
|
def _find_library_real(self, libname: str, env: 'Environment', extra_dirs: T.List[str], code: str, libtype: LibType) -> T.Optional[T.List[str]]:
|
|
|
|
# First try if we can just add the library as -l.
|
|
|
|
# Gcc + co seem to prefer builtin lib dirs to -L dirs.
|
|
|
|
# Only try to find std libs if no extra dirs specified.
|
|
|
|
# The built-in search procedure will always favour .so and then always
|
|
|
|
# search for .a. This is only allowed if libtype is LibType.PREFER_SHARED
|
|
|
|
if ((not extra_dirs and libtype is LibType.PREFER_SHARED) or
|
|
|
|
libname in self.internal_libs):
|
|
|
|
cargs = ['-l' + libname]
|
|
|
|
largs = self.get_linker_always_args() + self.get_allow_undefined_link_args()
|
|
|
|
extra_args = cargs + self.linker_to_compiler_args(largs)
|
|
|
|
|
|
|
|
if self.links(code, env, extra_args=extra_args, disable_cache=True)[0]:
|
|
|
|
return cargs
|
|
|
|
# Don't do a manual search for internal libs
|
|
|
|
if libname in self.internal_libs:
|
|
|
|
return None
|
|
|
|
# Not found or we want to use a specific libtype? Try to find the
|
|
|
|
# library file itself.
|
|
|
|
patterns = self.get_library_naming(env, libtype)
|
|
|
|
# try to detect if we are 64-bit or 32-bit. If we can't
|
|
|
|
# detect, we will just skip path validity checks done in
|
|
|
|
# get_library_dirs() call
|
|
|
|
try:
|
|
|
|
if self.output_is_64bit(env):
|
|
|
|
elf_class = 2
|
|
|
|
else:
|
|
|
|
elf_class = 1
|
|
|
|
except (mesonlib.MesonException, KeyError): # TODO evaluate if catching KeyError is wanted here
|
|
|
|
elf_class = 0
|
|
|
|
# Search in the specified dirs, and then in the system libraries
|
|
|
|
for d in itertools.chain(extra_dirs, self.get_library_dirs(env, elf_class)):
|
|
|
|
for p in patterns:
|
|
|
|
trials = self._get_trials_from_pattern(p, d, libname)
|
|
|
|
if not trials:
|
|
|
|
continue
|
|
|
|
trial = self._get_file_from_list(env, trials)
|
|
|
|
if not trial:
|
|
|
|
continue
|
|
|
|
return [trial.as_posix()]
|
|
|
|
return None
|
|
|
|
|
|
|
|
def _find_library_impl(self, libname: str, env: 'Environment', extra_dirs: T.List[str],
|
|
|
|
code: str, libtype: LibType) -> T.Optional[T.List[str]]:
|
|
|
|
# These libraries are either built-in or invalid
|
|
|
|
if libname in self.ignore_libs:
|
|
|
|
return []
|
|
|
|
if isinstance(extra_dirs, str):
|
|
|
|
extra_dirs = [extra_dirs]
|
|
|
|
key = (tuple(self.exelist), libname, tuple(extra_dirs), code, libtype)
|
|
|
|
if key not in self.find_library_cache:
|
|
|
|
value = self._find_library_real(libname, env, extra_dirs, code, libtype)
|
|
|
|
self.find_library_cache[key] = value
|
|
|
|
else:
|
|
|
|
value = self.find_library_cache[key]
|
|
|
|
if value is None:
|
|
|
|
return None
|
|
|
|
return value.copy()
|
|
|
|
|
|
|
|
def find_library(self, libname: str, env: 'Environment', extra_dirs: T.List[str],
|
|
|
|
libtype: LibType = LibType.PREFER_SHARED) -> T.Optional[T.List[str]]:
|
|
|
|
code = 'int main(void) { return 0; }\n'
|
|
|
|
return self._find_library_impl(libname, env, extra_dirs, code, libtype)
|
|
|
|
|
|
|
|
def find_framework_paths(self, env: 'Environment') -> T.List[str]:
|
|
|
|
'''
|
|
|
|
These are usually /Library/Frameworks and /System/Library/Frameworks,
|
|
|
|
unless you select a particular macOS SDK with the -isysroot flag.
|
|
|
|
You can also add to this by setting -F in CFLAGS.
|
|
|
|
'''
|
|
|
|
# TODO: this really needs to be *AppleClang*, not just any clang.
|
|
|
|
if self.id != 'clang':
|
|
|
|
raise mesonlib.MesonException('Cannot find framework path with non-clang compiler')
|
|
|
|
# Construct the compiler command-line
|
|
|
|
commands = self.get_exelist() + ['-v', '-E', '-']
|
|
|
|
commands += self.get_always_args()
|
|
|
|
# Add CFLAGS/CXXFLAGS/OBJCFLAGS/OBJCXXFLAGS from the env
|
|
|
|
commands += env.coredata.get_external_args(self.for_machine, self.language)
|
|
|
|
mlog.debug('Finding framework path by running: ', ' '.join(commands), '\n')
|
|
|
|
os_env = os.environ.copy()
|
|
|
|
os_env['LC_ALL'] = 'C'
|
|
|
|
_, _, stde = mesonlib.Popen_safe(commands, env=os_env, stdin=subprocess.PIPE)
|
|
|
|
paths = [] # T.List[str]
|
|
|
|
for line in stde.split('\n'):
|
|
|
|
if '(framework directory)' not in line:
|
|
|
|
continue
|
|
|
|
# line is of the form:
|
|
|
|
# ` /path/to/framework (framework directory)`
|
|
|
|
paths.append(line[:-21].strip())
|
|
|
|
return paths
|
|
|
|
|
|
|
|
def _find_framework_real(self, name: str, env: 'Environment', extra_dirs: T.List[str], allow_system: bool) -> T.Optional[T.List[str]]:
|
|
|
|
code = 'int main(void) { return 0; }'
|
|
|
|
link_args = []
|
|
|
|
for d in extra_dirs:
|
|
|
|
link_args += ['-F' + d]
|
|
|
|
# We can pass -Z to disable searching in the system frameworks, but
|
|
|
|
# then we must also pass -L/usr/lib to pick up libSystem.dylib
|
|
|
|
extra_args = [] if allow_system else ['-Z', '-L/usr/lib']
|
|
|
|
link_args += ['-framework', name]
|
|
|
|
if self.links(code, env, extra_args=(extra_args + link_args), disable_cache=True)[0]:
|
|
|
|
return link_args
|
|
|
|
return None
|
|
|
|
|
|
|
|
def _find_framework_impl(self, name: str, env: 'Environment', extra_dirs: T.List[str],
|
|
|
|
allow_system: bool) -> T.Optional[T.List[str]]:
|
|
|
|
if isinstance(extra_dirs, str):
|
|
|
|
extra_dirs = [extra_dirs]
|
|
|
|
key = (tuple(self.exelist), name, tuple(extra_dirs), allow_system)
|
|
|
|
if key in self.find_framework_cache:
|
|
|
|
value = self.find_framework_cache[key]
|
|
|
|
else:
|
|
|
|
value = self._find_framework_real(name, env, extra_dirs, allow_system)
|
|
|
|
self.find_framework_cache[key] = value
|
|
|
|
if value is None:
|
|
|
|
return None
|
|
|
|
return value.copy()
|
|
|
|
|
|
|
|
def find_framework(self, name: str, env: 'Environment', extra_dirs: T.List[str],
|
|
|
|
allow_system: bool = True) -> T.Optional[T.List[str]]:
|
|
|
|
'''
|
|
|
|
Finds the framework with the specified name, and returns link args for
|
|
|
|
the same or returns None when the framework is not found.
|
|
|
|
'''
|
|
|
|
# TODO: should probably check for macOS?
|
|
|
|
return self._find_framework_impl(name, env, extra_dirs, allow_system)
|
|
|
|
|
|
|
|
def get_crt_compile_args(self, crt_val: str, buildtype: str) -> T.List[str]:
|
|
|
|
# TODO: does this belong here or in GnuLike or maybe PosixLike?
|
|
|
|
return []
|
|
|
|
|
|
|
|
def get_crt_link_args(self, crt_val: str, buildtype: str) -> T.List[str]:
|
|
|
|
# TODO: does this belong here or in GnuLike or maybe PosixLike?
|
|
|
|
return []
|
|
|
|
|
|
|
|
def thread_flags(self, env: 'Environment') -> T.List[str]:
|
|
|
|
# TODO: does this belong here or in GnuLike or maybe PosixLike?
|
|
|
|
host_m = env.machines[self.for_machine]
|
|
|
|
if host_m.is_haiku() or host_m.is_darwin():
|
|
|
|
return []
|
|
|
|
return ['-pthread']
|
|
|
|
|
|
|
|
def linker_to_compiler_args(self, args: T.List[str]) -> T.List[str]:
|
|
|
|
return args.copy()
|
|
|
|
|
|
|
|
def has_arguments(self, args: T.List[str], env: 'Environment', code: str,
|
|
|
|
mode: str) -> T.Tuple[bool, bool]:
|
|
|
|
return self.compiles(code, env, extra_args=args, mode=mode)
|
|
|
|
|
|
|
|
def _has_multi_arguments(self, args: T.List[str], env: 'Environment', code: str) -> T.Tuple[bool, bool]:
|
|
|
|
new_args = [] # type: T.List[str]
|
|
|
|
for arg in args:
|
|
|
|
# some compilers, e.g. GCC, don't warn for unsupported warning-disable
|
|
|
|
# flags, so when we are testing a flag like "-Wno-forgotten-towel", also
|
|
|
|
# check the equivalent enable flag too "-Wforgotten-towel"
|
|
|
|
if arg.startswith('-Wno-'):
|
|
|
|
new_args.append('-W' + arg[5:])
|
|
|
|
if arg.startswith('-Wl,'):
|
|
|
|
mlog.warning(f'{arg} looks like a linker argument, '
|
|
|
|
'but has_argument and other similar methods only '
|
|
|
|
'support checking compiler arguments. Using them '
|
|
|
|
'to check linker arguments are never supported, '
|
|
|
|
'and results are likely to be wrong regardless of '
|
|
|
|
'the compiler you are using. has_link_argument or '
|
|
|
|
'other similar method can be used instead.')
|
|
|
|
new_args.append(arg)
|
|
|
|
return self.has_arguments(new_args, env, code, mode='compile')
|
|
|
|
|
|
|
|
def has_multi_arguments(self, args: T.List[str], env: 'Environment') -> T.Tuple[bool, bool]:
|
|
|
|
return self._has_multi_arguments(args, env, 'extern int i;\nint i;\n')
|
|
|
|
|
|
|
|
def _has_multi_link_arguments(self, args: T.List[str], env: 'Environment', code: str) -> T.Tuple[bool, bool]:
|
|
|
|
# First time we check for link flags we need to first check if we have
|
|
|
|
# --fatal-warnings, otherwise some linker checks could give some
|
|
|
|
# false positive.
|
|
|
|
args = self.linker.fatal_warnings() + args
|
|
|
|
args = self.linker_to_compiler_args(args)
|
|
|
|
return self.has_arguments(args, env, code, mode='link')
|
|
|
|
|
|
|
|
def has_multi_link_arguments(self, args: T.List[str], env: 'Environment') -> T.Tuple[bool, bool]:
|
|
|
|
return self._has_multi_link_arguments(args, env, 'int main(void) { return 0; }\n')
|
|
|
|
|
|
|
|
@staticmethod
|
|
|
|
def _concatenate_string_literals(s: str) -> str:
|
|
|
|
pattern = re.compile(r'(?P<pre>.*([^\\]")|^")(?P<str1>([^\\"]|\\.)*)"\s+"(?P<str2>([^\\"]|\\.)*)(?P<post>".*)')
|
|
|
|
ret = s
|
|
|
|
m = pattern.match(ret)
|
|
|
|
while m:
|
|
|
|
ret = ''.join(m.group('pre', 'str1', 'str2', 'post'))
|
|
|
|
m = pattern.match(ret)
|
|
|
|
return ret
|
|
|
|
|
|
|
|
def get_has_func_attribute_extra_args(self, name: str) -> T.List[str]:
|
|
|
|
# Most compilers (such as GCC and Clang) only warn about unknown or
|
|
|
|
# ignored attributes, so force an error. Overridden in GCC and Clang
|
|
|
|
# mixins.
|
|
|
|
return ['-Werror']
|
|
|
|
|
|
|
|
def has_func_attribute(self, name: str, env: 'Environment') -> T.Tuple[bool, bool]:
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# Just assume that if we're not on windows that dllimport and dllexport
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# don't work
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m = env.machines[self.for_machine]
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if not (m.is_windows() or m.is_cygwin()):
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if name in ['dllimport', 'dllexport']:
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return False, False
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return self.compiles(self.attribute_check_func(name), env,
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extra_args=self.get_has_func_attribute_extra_args(name))
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def get_disable_assert_args(self) -> T.List[str]:
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return ['-DNDEBUG']
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