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-# Copyright 2020-2022 David Robillard <d@drobilla.net>
-# SPDX-License-Identifier: 0BSD OR ISC
-
-# General code to enable approximately all warnings in GCC 12, clang, and MSVC.
-#
-# This is trivial for clang and MSVC, but GCC doesn't have an "everything"
-# option, so we need to enable everything we want explicitly. Wall is assumed,
-# but Wextra is not, for stability.
-#
-# These are collected from common.opt and c.opt in the GCC source, and manually
-# curated with the help of the GCC documentation. Warnings that are
-# application-specific, historical, or about compatibility between specific
-# language revisions are omitted. The intent here is to have roughly the same
-# meaning as clang's Weverything: extremely strict, but general. Specifically
-# omitted are:
-#
-# General:
-#
-# Wabi=
-# Waggregate-return
-# Walloc-size-larger-than=BYTES
-# Walloca-larger-than=BYTES
-# Wframe-larger-than=BYTES
-# Wlarger-than=BYTES
-# Wstack-usage=BYTES
-# Wsystem-headers
-# Wtraditional
-# Wtraditional-conversion
-# Wtrampolines
-# Wvla-larger-than=BYTES
-#
-# Build specific:
-#
-# Wpoison-system-directories
-#
-# C Specific:
-#
-# Wc11-c2x-compat
-# Wc90-c99-compat
-# Wc99-c11-compat
-# Wdeclaration-after-statement
-# Wtraditional
-# Wtraditional-conversion
-#
-# C++ Specific:
-#
-# Wc++0x-compat
-# Wc++1z-compat
-# Wc++2a-compat
-# Wctad-maybe-unsupported
-# Wnamespaces
-# Wtemplates
-
-# GCC warnings that apply to all C-family languages
-gcc_common_warnings = [
- '-Walloc-zero',
- '-Walloca',
- '-Wanalyzer-too-complex',
- '-Warith-conversion',
- '-Warray-bounds=2',
- '-Wattribute-alias=2',
- '-Wbidi-chars=ucn',
- '-Wcast-align=strict',
- '-Wcast-qual',
- '-Wconversion',
- '-Wdate-time',
- '-Wdisabled-optimization',
- '-Wdouble-promotion',
- '-Wduplicated-branches',
- '-Wduplicated-cond',
- '-Wfloat-equal',
- '-Wformat-overflow=2',
- '-Wformat-signedness',
- '-Wformat-truncation=2',
- '-Wformat=2',
- '-Winit-self',
- '-Winline',
- '-Winvalid-pch',
- '-Wlogical-op',
- '-Wmissing-declarations',
- '-Wmissing-include-dirs',
- '-Wmultichar',
- '-Wnormalized=nfc',
- '-Wnull-dereference',
- '-Wopenacc-parallelism',
- '-Wpacked',
- '-Wpadded',
- '-Wredundant-decls',
- '-Wshadow',
- '-Wshift-negative-value',
- '-Wshift-overflow=2',
- '-Wstack-protector',
- '-Wstrict-aliasing=3',
- '-Wstrict-overflow=5',
- '-Wstringop-overflow=3',
- '-Wsuggest-attribute=cold',
- '-Wsuggest-attribute=const',
- '-Wsuggest-attribute=format',
- '-Wsuggest-attribute=malloc',
- '-Wsuggest-attribute=noreturn',
- '-Wsuggest-attribute=pure',
- '-Wswitch-default',
- '-Wswitch-enum',
- '-Wtrampolines',
- '-Wtrivial-auto-var-init',
- '-Wundef',
- '-Wuninitialized',
- '-Wunsafe-loop-optimizations',
- '-Wunused-const-variable=2',
- '-Wunused-macros',
- '-Wvector-operation-performance',
- '-Wvla',
- '-Wwrite-strings',
-]
-
-#####
-# C #
-#####
-
-if is_variable('cc')
- # Set all_c_warnings for the current C compiler
- all_c_warnings = []
-
- if cc.get_id() == 'clang'
- all_c_warnings += ['-Weverything']
-
- if not meson.is_cross_build()
- all_c_warnings += [
- '-Wno-poison-system-directories',
- ]
- endif
-
- elif cc.get_id() == 'gcc'
- all_c_warnings += gcc_common_warnings + [
- '-Wbad-function-cast',
- '-Wc++-compat',
- '-Wmissing-prototypes',
- '-Wnested-externs',
- '-Wold-style-definition',
- '-Wstrict-prototypes',
- '-Wunsuffixed-float-constants',
- ]
-
- elif cc.get_id() == 'msvc'
- all_c_warnings += [
- '/Wall',
- '/experimental:external',
- '/external:W0',
- '/external:anglebrackets',
- ]
- endif
-
- all_c_warnings = cc.get_supported_arguments(all_c_warnings)
- add_global_arguments(all_c_warnings, language: ['c'])
-endif