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641 lines
20 KiB
641 lines
20 KiB
# SPDX-License-Identifier: Apache-2.0 |
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# Copyright 2019-2022 The meson development team |
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from __future__ import annotations |
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"""Provides mixins for GNU compilers and GNU-like compilers.""" |
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import abc |
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import functools |
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import os |
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import multiprocessing |
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import pathlib |
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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 ... import mesonlib |
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from ... import mlog |
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from ...mesonlib import OptionKey |
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from mesonbuild.compilers.compilers import CompileCheckMode |
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if T.TYPE_CHECKING: |
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from ..._typing import ImmutableListProtocol |
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from ...environment import Environment |
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from ..compilers import Compiler |
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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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|
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# XXX: prevent circular references. |
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# FIXME: this really is a posix interface not a c-like interface |
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clike_debug_args: T.Dict[bool, T.List[str]] = { |
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False: [], |
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True: ['-g'], |
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} |
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gnulike_buildtype_args: T.Dict[str, T.List[str]] = { |
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'plain': [], |
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'debug': [], |
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'debugoptimized': [], |
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'release': [], |
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'minsize': [], |
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'custom': [], |
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} |
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gnu_optimization_args: T.Dict[str, T.List[str]] = { |
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'plain': [], |
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'0': ['-O0'], |
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'g': ['-Og'], |
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'1': ['-O1'], |
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'2': ['-O2'], |
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'3': ['-O3'], |
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's': ['-Os'], |
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} |
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gnulike_instruction_set_args: T.Dict[str, T.List[str]] = { |
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'mmx': ['-mmmx'], |
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'sse': ['-msse'], |
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'sse2': ['-msse2'], |
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'sse3': ['-msse3'], |
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'ssse3': ['-mssse3'], |
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'sse41': ['-msse4.1'], |
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'sse42': ['-msse4.2'], |
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'avx': ['-mavx'], |
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'avx2': ['-mavx2'], |
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'neon': ['-mfpu=neon'], |
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} |
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gnu_symbol_visibility_args: T.Dict[str, T.List[str]] = { |
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'': [], |
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'default': ['-fvisibility=default'], |
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'internal': ['-fvisibility=internal'], |
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'hidden': ['-fvisibility=hidden'], |
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'protected': ['-fvisibility=protected'], |
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'inlineshidden': ['-fvisibility=hidden', '-fvisibility-inlines-hidden'], |
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} |
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gnu_color_args: T.Dict[str, T.List[str]] = { |
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'auto': ['-fdiagnostics-color=auto'], |
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'always': ['-fdiagnostics-color=always'], |
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'never': ['-fdiagnostics-color=never'], |
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} |
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# Warnings collected from the GCC source and documentation. This is an |
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# objective set of all the warnings flags that apply to general projects: the |
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# only ones omitted are those that require a project-specific value, or are |
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# related to non-standard or legacy language support. This behaves roughly |
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# like -Weverything in clang. Warnings implied by -Wall, -Wextra, or |
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# higher-level warnings already enabled here are not included in these lists to |
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# keep them as short as possible. History goes back to GCC 3.0.0, everything |
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# earlier is considered historical and listed under version 0.0.0. |
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# GCC warnings for all C-family languages |
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# Omitted non-general warnings: |
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# -Wabi= |
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# -Waggregate-return |
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# -Walloc-size-larger-than=BYTES |
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# -Walloca-larger-than=BYTES |
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# -Wframe-larger-than=BYTES |
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# -Wlarger-than=BYTES |
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# -Wstack-usage=BYTES |
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# -Wsystem-headers |
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# -Wtrampolines |
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# -Wvla-larger-than=BYTES |
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# |
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# Omitted warnings enabled elsewhere in meson: |
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# -Winvalid-pch (GCC 3.4.0) |
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gnu_common_warning_args: T.Dict[str, T.List[str]] = { |
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"0.0.0": [ |
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"-Wcast-qual", |
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"-Wconversion", |
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"-Wfloat-equal", |
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"-Wformat=2", |
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"-Winline", |
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"-Wmissing-declarations", |
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"-Wredundant-decls", |
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"-Wshadow", |
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"-Wundef", |
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"-Wuninitialized", |
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"-Wwrite-strings", |
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], |
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"3.0.0": [ |
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"-Wdisabled-optimization", |
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"-Wpacked", |
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"-Wpadded", |
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], |
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"3.3.0": [ |
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"-Wmultichar", |
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"-Wswitch-default", |
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"-Wswitch-enum", |
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"-Wunused-macros", |
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], |
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"4.0.0": [ |
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"-Wmissing-include-dirs", |
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], |
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"4.1.0": [ |
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"-Wunsafe-loop-optimizations", |
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"-Wstack-protector", |
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], |
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"4.2.0": [ |
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"-Wstrict-overflow=5", |
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], |
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"4.3.0": [ |
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"-Warray-bounds=2", |
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"-Wlogical-op", |
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"-Wstrict-aliasing=3", |
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"-Wvla", |
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], |
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"4.6.0": [ |
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"-Wdouble-promotion", |
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"-Wsuggest-attribute=const", |
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"-Wsuggest-attribute=noreturn", |
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"-Wsuggest-attribute=pure", |
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"-Wtrampolines", |
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], |
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"4.7.0": [ |
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"-Wvector-operation-performance", |
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], |
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"4.8.0": [ |
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"-Wsuggest-attribute=format", |
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], |
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"4.9.0": [ |
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"-Wdate-time", |
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], |
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"5.1.0": [ |
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"-Wformat-signedness", |
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"-Wnormalized=nfc", |
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], |
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"6.1.0": [ |
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"-Wduplicated-cond", |
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"-Wnull-dereference", |
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"-Wshift-negative-value", |
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"-Wshift-overflow=2", |
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"-Wunused-const-variable=2", |
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], |
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"7.1.0": [ |
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"-Walloca", |
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"-Walloc-zero", |
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"-Wformat-overflow=2", |
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"-Wformat-truncation=2", |
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"-Wstringop-overflow=3", |
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], |
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"7.2.0": [ |
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"-Wduplicated-branches", |
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], |
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"8.1.0": [ |
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"-Wcast-align=strict", |
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"-Wsuggest-attribute=cold", |
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"-Wsuggest-attribute=malloc", |
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], |
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"9.1.0": [ |
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"-Wattribute-alias=2", |
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], |
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"10.1.0": [ |
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"-Wanalyzer-too-complex", |
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"-Warith-conversion", |
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], |
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"12.1.0": [ |
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"-Wbidi-chars=ucn", |
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"-Wopenacc-parallelism", |
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"-Wtrivial-auto-var-init", |
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], |
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} |
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# GCC warnings for C |
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# Omitted non-general or legacy warnings: |
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# -Wc11-c2x-compat |
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# -Wc90-c99-compat |
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# -Wc99-c11-compat |
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# -Wdeclaration-after-statement |
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# -Wtraditional |
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# -Wtraditional-conversion |
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gnu_c_warning_args: T.Dict[str, T.List[str]] = { |
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"0.0.0": [ |
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"-Wbad-function-cast", |
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"-Wmissing-prototypes", |
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"-Wnested-externs", |
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"-Wstrict-prototypes", |
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], |
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"3.4.0": [ |
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"-Wold-style-definition", |
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"-Winit-self", |
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], |
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"4.1.0": [ |
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"-Wc++-compat", |
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], |
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"4.5.0": [ |
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"-Wunsuffixed-float-constants", |
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], |
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} |
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# GCC warnings for C++ |
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# Omitted non-general or legacy warnings: |
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# -Wc++0x-compat |
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# -Wc++1z-compat |
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# -Wc++2a-compat |
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# -Wctad-maybe-unsupported |
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# -Wnamespaces |
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# -Wtemplates |
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gnu_cpp_warning_args: T.Dict[str, T.List[str]] = { |
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"0.0.0": [ |
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"-Wctor-dtor-privacy", |
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"-Weffc++", |
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"-Wnon-virtual-dtor", |
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"-Wold-style-cast", |
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"-Woverloaded-virtual", |
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"-Wsign-promo", |
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], |
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"4.0.1": [ |
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"-Wstrict-null-sentinel", |
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], |
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"4.6.0": [ |
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"-Wnoexcept", |
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], |
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"4.7.0": [ |
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"-Wzero-as-null-pointer-constant", |
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], |
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"4.8.0": [ |
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"-Wabi-tag", |
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"-Wuseless-cast", |
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], |
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"4.9.0": [ |
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"-Wconditionally-supported", |
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], |
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"5.1.0": [ |
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"-Wsuggest-final-methods", |
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"-Wsuggest-final-types", |
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"-Wsuggest-override", |
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], |
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"6.1.0": [ |
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"-Wmultiple-inheritance", |
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"-Wplacement-new=2", |
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"-Wvirtual-inheritance", |
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], |
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"7.1.0": [ |
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"-Waligned-new=all", |
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"-Wnoexcept-type", |
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"-Wregister", |
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], |
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"8.1.0": [ |
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"-Wcatch-value=3", |
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"-Wextra-semi", |
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], |
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"9.1.0": [ |
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"-Wdeprecated-copy-dtor", |
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"-Wredundant-move", |
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], |
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"10.1.0": [ |
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"-Wcomma-subscript", |
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"-Wmismatched-tags", |
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"-Wredundant-tags", |
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"-Wvolatile", |
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], |
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"11.1.0": [ |
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"-Wdeprecated-enum-enum-conversion", |
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"-Wdeprecated-enum-float-conversion", |
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"-Winvalid-imported-macros", |
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], |
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} |
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# GCC warnings for Objective C and Objective C++ |
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# Omitted non-general or legacy warnings: |
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# -Wtraditional |
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# -Wtraditional-conversion |
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gnu_objc_warning_args: T.Dict[str, T.List[str]] = { |
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"0.0.0": [ |
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"-Wselector", |
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], |
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"3.3": [ |
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"-Wundeclared-selector", |
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], |
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"4.1.0": [ |
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"-Wassign-intercept", |
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"-Wstrict-selector-match", |
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], |
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} |
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_LANG_MAP = { |
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'c': 'c', |
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'cpp': 'c++', |
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'objc': 'objective-c', |
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'objcpp': 'objective-c++' |
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} |
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@functools.lru_cache(maxsize=None) |
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def gnulike_default_include_dirs(compiler: T.Tuple[str, ...], lang: str) -> 'ImmutableListProtocol[str]': |
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if lang not in _LANG_MAP: |
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return [] |
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lang = _LANG_MAP[lang] |
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env = os.environ.copy() |
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env["LC_ALL"] = 'C' |
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cmd = list(compiler) + [f'-x{lang}', '-E', '-v', '-'] |
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_, stdout, _ = mesonlib.Popen_safe(cmd, stderr=subprocess.STDOUT, env=env) |
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parse_state = 0 |
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paths: T.List[str] = [] |
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for line in stdout.split('\n'): |
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line = line.strip(' \n\r\t') |
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if parse_state == 0: |
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if line == '#include "..." search starts here:': |
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parse_state = 1 |
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elif parse_state == 1: |
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if line == '#include <...> search starts here:': |
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parse_state = 2 |
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else: |
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paths.append(line) |
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elif parse_state == 2: |
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if line == 'End of search list.': |
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break |
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else: |
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paths.append(line) |
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if not paths: |
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mlog.warning('No include directory found parsing "{cmd}" output'.format(cmd=" ".join(cmd))) |
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# Append a normalized copy of paths to make path lookup easier |
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paths += [os.path.normpath(x) for x in paths] |
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return paths |
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class GnuLikeCompiler(Compiler, metaclass=abc.ABCMeta): |
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""" |
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GnuLikeCompiler is a common interface to all compilers implementing |
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the GNU-style commandline interface. This includes GCC, Clang |
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and ICC. Certain functionality between them is different and requires |
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that the actual concrete subclass define their own implementation. |
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""" |
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LINKER_PREFIX = '-Wl,' |
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def __init__(self) -> None: |
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self.base_options = { |
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OptionKey(o) for o in ['b_pch', 'b_lto', 'b_pgo', 'b_coverage', |
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'b_ndebug', 'b_staticpic', 'b_pie']} |
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if not (self.info.is_windows() or self.info.is_cygwin() or self.info.is_openbsd()): |
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self.base_options.add(OptionKey('b_lundef')) |
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if not self.info.is_windows() or self.info.is_cygwin(): |
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self.base_options.add(OptionKey('b_asneeded')) |
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if not self.info.is_hurd(): |
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self.base_options.add(OptionKey('b_sanitize')) |
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# All GCC-like backends can do assembly |
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self.can_compile_suffixes.add('s') |
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self.can_compile_suffixes.add('sx') |
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def get_pic_args(self) -> T.List[str]: |
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if self.info.is_windows() or self.info.is_cygwin() or self.info.is_darwin(): |
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return [] # On Window and OS X, pic is always on. |
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return ['-fPIC'] |
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def get_pie_args(self) -> T.List[str]: |
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return ['-fPIE'] |
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def get_buildtype_args(self, buildtype: str) -> T.List[str]: |
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return gnulike_buildtype_args[buildtype] |
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@abc.abstractmethod |
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def get_optimization_args(self, optimization_level: str) -> T.List[str]: |
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pass |
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def get_debug_args(self, is_debug: bool) -> T.List[str]: |
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return clike_debug_args[is_debug] |
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@abc.abstractmethod |
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def get_pch_suffix(self) -> str: |
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pass |
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def split_shlib_to_parts(self, fname: str) -> T.Tuple[str, str]: |
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return os.path.dirname(fname), fname |
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def get_instruction_set_args(self, instruction_set: str) -> T.Optional[T.List[str]]: |
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return gnulike_instruction_set_args.get(instruction_set, None) |
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def get_default_include_dirs(self) -> T.List[str]: |
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return gnulike_default_include_dirs(tuple(self.get_exelist(ccache=False)), self.language).copy() |
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@abc.abstractmethod |
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def openmp_flags(self) -> T.List[str]: |
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pass |
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def gnu_symbol_visibility_args(self, vistype: str) -> T.List[str]: |
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if vistype == 'inlineshidden' and self.language not in {'cpp', 'objcpp'}: |
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vistype = 'hidden' |
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return gnu_symbol_visibility_args[vistype] |
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def gen_vs_module_defs_args(self, defsfile: str) -> T.List[str]: |
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if not isinstance(defsfile, str): |
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raise RuntimeError('Module definitions file should be str') |
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# On Windows targets, .def files may be specified on the linker command |
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# line like an object file. |
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if self.info.is_windows() or self.info.is_cygwin(): |
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return [defsfile] |
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# For other targets, discard the .def file. |
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return [] |
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def get_argument_syntax(self) -> str: |
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return 'gcc' |
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def get_profile_generate_args(self) -> T.List[str]: |
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return ['-fprofile-generate'] |
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def get_profile_use_args(self) -> T.List[str]: |
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return ['-fprofile-use'] |
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def compute_parameters_with_absolute_paths(self, parameter_list: T.List[str], build_dir: str) -> T.List[str]: |
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for idx, i in enumerate(parameter_list): |
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if i[:2] == '-I' or i[:2] == '-L': |
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parameter_list[idx] = i[:2] + os.path.normpath(os.path.join(build_dir, i[2:])) |
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return parameter_list |
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@functools.lru_cache() |
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def _get_search_dirs(self, env: 'Environment') -> str: |
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extra_args = ['--print-search-dirs'] |
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with self._build_wrapper('', env, extra_args=extra_args, |
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dependencies=None, mode=CompileCheckMode.COMPILE, |
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want_output=True) as p: |
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return p.stdout |
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def _split_fetch_real_dirs(self, pathstr: str) -> T.List[str]: |
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# We need to use the path separator used by the compiler for printing |
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# lists of paths ("gcc --print-search-dirs"). By default |
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# we assume it uses the platform native separator. |
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pathsep = os.pathsep |
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# clang uses ':' instead of ';' on Windows https://reviews.llvm.org/D61121 |
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# so we need to repair things like 'C:\foo:C:\bar' |
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if pathsep == ';': |
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pathstr = re.sub(r':([^/\\])', r';\1', pathstr) |
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# pathlib treats empty paths as '.', so filter those out |
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paths = [p for p in pathstr.split(pathsep) if p] |
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result: T.List[str] = [] |
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for p in paths: |
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# GCC returns paths like this: |
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# /usr/lib/gcc/x86_64-linux-gnu/8/../../../../x86_64-linux-gnu/lib |
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# It would make sense to normalize them to get rid of the .. parts |
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# Sadly when you are on a merged /usr fs it also kills these: |
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# /lib/x86_64-linux-gnu |
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# since /lib is a symlink to /usr/lib. This would mean |
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# paths under /lib would be considered not a "system path", |
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# which is wrong and breaks things. Store everything, just to be sure. |
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pobj = pathlib.Path(p) |
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unresolved = pobj.as_posix() |
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if pobj.exists(): |
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if unresolved not in result: |
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result.append(unresolved) |
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try: |
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resolved = pathlib.Path(p).resolve().as_posix() |
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if resolved not in result: |
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result.append(resolved) |
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except FileNotFoundError: |
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pass |
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return result |
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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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stdo = self._get_search_dirs(env) |
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for line in stdo.split('\n'): |
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if line.startswith(name + ':'): |
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return self._split_fetch_real_dirs(line.split('=', 1)[1]) |
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return [] |
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def get_lto_compile_args(self, *, threads: int = 0, mode: str = 'default') -> T.List[str]: |
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# This provides a base for many compilers, GCC and Clang override this |
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# for their specific arguments |
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return ['-flto'] |
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def sanitizer_compile_args(self, value: str) -> T.List[str]: |
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if value == 'none': |
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return [] |
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args = ['-fsanitize=' + value] |
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if 'address' in value: # for -fsanitize=address,undefined |
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args.append('-fno-omit-frame-pointer') |
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return args |
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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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|
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def get_dependency_gen_args(self, outtarget: str, outfile: str) -> T.List[str]: |
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return ['-MD', '-MQ', outtarget, '-MF', outfile] |
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|
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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_include_args(self, path: str, is_system: bool) -> T.List[str]: |
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if not 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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@classmethod |
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def use_linker_args(cls, linker: str, version: str) -> T.List[str]: |
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if linker not in {'gold', 'bfd', 'lld'}: |
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raise mesonlib.MesonException( |
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f'Unsupported linker, only bfd, gold, and lld are supported, not {linker}.') |
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return [f'-fuse-ld={linker}'] |
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|
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def get_coverage_args(self) -> T.List[str]: |
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return ['--coverage'] |
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|
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def get_preprocess_to_file_args(self) -> T.List[str]: |
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# We want to allow preprocessing files with any extension, such as |
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# foo.c.in. In that case we need to tell GCC/CLANG to treat them as |
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# assembly file. |
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lang = _LANG_MAP.get(self.language, 'assembler-with-cpp') |
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return self.get_preprocess_only_args() + [f'-x{lang}'] |
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class GnuCompiler(GnuLikeCompiler): |
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""" |
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GnuCompiler represents an actual GCC in its many incarnations. |
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Compilers imitating GCC (Clang/Intel) should use the GnuLikeCompiler ABC. |
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""" |
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id = 'gcc' |
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def __init__(self, defines: T.Optional[T.Dict[str, str]]): |
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super().__init__() |
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self.defines = defines or {} |
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self.base_options.update({OptionKey('b_colorout'), OptionKey('b_lto_threads')}) |
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def get_colorout_args(self, colortype: str) -> T.List[str]: |
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if mesonlib.version_compare(self.version, '>=4.9.0'): |
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return gnu_color_args[colortype][:] |
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return [] |
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def get_warn_args(self, level: str) -> T.List[str]: |
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# Mypy doesn't understand cooperative inheritance |
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args = super().get_warn_args(level) |
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if mesonlib.version_compare(self.version, '<4.8.0') and '-Wpedantic' in args: |
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# -Wpedantic was added in 4.8.0 |
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# https://gcc.gnu.org/gcc-4.8/changes.html |
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args[args.index('-Wpedantic')] = '-pedantic' |
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return args |
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def supported_warn_args(self, warn_args_by_version: T.Dict[str, T.List[str]]) -> T.List[str]: |
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result: T.List[str] = [] |
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for version, warn_args in warn_args_by_version.items(): |
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if mesonlib.version_compare(self.version, '>=' + version): |
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result += warn_args |
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return result |
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def has_builtin_define(self, define: str) -> bool: |
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return define in self.defines |
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def get_builtin_define(self, define: str) -> T.Optional[str]: |
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if define in self.defines: |
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return self.defines[define] |
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return None |
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def get_optimization_args(self, optimization_level: str) -> T.List[str]: |
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return gnu_optimization_args[optimization_level] |
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def get_pch_suffix(self) -> str: |
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return 'gch' |
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def openmp_flags(self) -> T.List[str]: |
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return ['-fopenmp'] |
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def has_arguments(self, args: T.List[str], env: 'Environment', code: str, |
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mode: CompileCheckMode) -> T.Tuple[bool, bool]: |
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# For some compiler command line arguments, the GNU compilers will |
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# emit a warning on stderr indicating that an option is valid for a |
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# another language, but still complete with exit_success |
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with self._build_wrapper(code, env, args, None, mode) as p: |
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result = p.returncode == 0 |
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if self.language in {'cpp', 'objcpp'} and 'is valid for C/ObjC' in p.stderr: |
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result = False |
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if self.language in {'c', 'objc'} and 'is valid for C++/ObjC++' in p.stderr: |
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result = False |
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return result, p.cached |
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def get_has_func_attribute_extra_args(self, name: str) -> T.List[str]: |
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# GCC only warns about unknown or ignored attributes, so force an |
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# error. |
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return ['-Werror=attributes'] |
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def get_prelink_args(self, prelink_name: str, obj_list: T.List[str]) -> T.List[str]: |
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return ['-r', '-o', prelink_name] + obj_list |
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def get_lto_compile_args(self, *, threads: int = 0, mode: str = 'default') -> T.List[str]: |
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if threads == 0: |
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if mesonlib.version_compare(self.version, '>= 10.0'): |
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return ['-flto=auto'] |
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# This matches clang's behavior of using the number of cpus |
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return [f'-flto={multiprocessing.cpu_count()}'] |
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elif threads > 0: |
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return [f'-flto={threads}'] |
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return super().get_lto_compile_args(threads=threads) |
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|
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@classmethod |
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def use_linker_args(cls, linker: str, version: str) -> T.List[str]: |
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if linker == 'mold' and mesonlib.version_compare(version, '>=12.0.1'): |
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return ['-fuse-ld=mold'] |
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return super().use_linker_args(linker, version) |
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def get_profile_use_args(self) -> T.List[str]: |
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return super().get_profile_use_args() + ['-fprofile-correction']
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