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Diffstat (limited to 'meson/warnings')
| -rw-r--r-- | meson/warnings/meson.build | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/meson/warnings/meson.build b/meson/warnings/meson.build new file mode 100644 index 0000000..e0051f9 --- /dev/null +++ b/meson/warnings/meson.build @@ -0,0 +1,256 @@ +# Copyright 2020-2022 David Robillard <d@drobilla.net> +# SPDX-License-Identifier: CC0-1.0 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-function-type', + '-Wcast-qual', + '-Wclobbered', + '-Wconversion', + '-Wdate-time', + '-Wdisabled-optimization', + '-Wdouble-promotion', + '-Wduplicated-branches', + '-Wduplicated-cond', + '-Wempty-body', + '-Wendif-labels', + '-Wfloat-equal', + '-Wformat-overflow=2', + '-Wformat-signedness', + '-Wformat-truncation=2', + '-Wformat=2', + '-Wignored-qualifiers', + '-Wimplicit-fallthrough=3', + '-Winit-self', + '-Winline', + '-Winvalid-pch', + '-Wlogical-op', + '-Wmissing-declarations', + '-Wmissing-field-initializers', + '-Wmissing-include-dirs', + '-Wmultichar', + '-Wnormalized=nfc', + '-Wnull-dereference', + '-Wopenacc-parallelism', + '-Woverlength-strings', + '-Wpacked', + '-Wpacked-bitfield-compat', + '-Wpadded', + '-Wpointer-arith', + '-Wredundant-decls', + '-Wshadow', + '-Wshift-negative-value', + '-Wshift-overflow=2', + '-Wstack-protector', + '-Wstrict-aliasing=3', + '-Wstrict-overflow=5', + '-Wstring-compare', + '-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', + '-Wtype-limits', + '-Wundef', + '-Wuninitialized', + '-Wunsafe-loop-optimizations', + '-Wunused', + '-Wunused-const-variable=2', + '-Wunused-macros', + '-Wvector-operation-performance', + '-Wvla', + '-Wwrite-strings', +] + +##### +# C # +##### + +if is_variable('cc') and not is_variable('all_c_warnings') + # Set all_c_warnings for the current C compiler + all_c_warnings = [] + + if get_option('strict') + 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 + [ + '-Wabsolute-value', + '-Wbad-function-cast', + '-Wc++-compat', + '-Wenum-conversion', + '-Wjump-misses-init', + '-Wmissing-parameter-type', + '-Wmissing-prototypes', + '-Wnested-externs', + '-Wold-style-declaration', + '-Wold-style-definition', + '-Woverride-init', + '-Wsign-compare', + '-Wstrict-prototypes', + '-Wunsuffixed-float-constants', + ] + + elif cc.get_id() == 'msvc' + all_c_warnings += [ + '/Wall', + '/experimental:external', + '/external:W0', + '/external:anglebrackets', + ] + endif + endif + + all_c_warnings = cc.get_supported_arguments(all_c_warnings) + add_global_arguments(all_c_warnings, language: ['c']) +endif + +####### +# C++ # +####### + +if is_variable('cpp') and not is_variable('all_cpp_warnings') + # Set all_cpp_warnings for the current C++ compiler + all_cpp_warnings = [] + + if get_option('strict') + if cpp.get_id() == 'clang' + all_cpp_warnings += [ + '-Weverything', + '-Wno-c++98-compat', + '-Wno-c++98-compat-pedantic', + ] + + if not meson.is_cross_build() + all_cpp_warnings += [ + '-Wno-poison-system-directories', + ] + endif + + elif cpp.get_id() == 'gcc' + all_cpp_warnings += gcc_common_warnings + [ + '-Wabi-tag', + '-Waligned-new=all', + '-Wcatch-value=3', + '-Wcomma-subscript', + '-Wconditionally-supported', + '-Wctor-dtor-privacy', + '-Wdelete-non-virtual-dtor', + '-Wdeprecated', + '-Wdeprecated-copy', + '-Wdeprecated-copy-dtor', + '-Wdeprecated-enum-enum-conversion', + '-Wdeprecated-enum-float-conversion', + '-Weffc++', + '-Wexpansion-to-defined', + '-Wextra-semi', + '-Wimport', + '-Winvalid-imported-macros', + '-Wmismatched-tags', + '-Wmultiple-inheritance', + '-Wnoexcept', + '-Wnoexcept-type', + '-Wnon-virtual-dtor', + '-Wold-style-cast', + '-Woverloaded-virtual', + '-Wplacement-new=2', + '-Wredundant-move', + '-Wredundant-tags', + '-Wregister', + '-Wsign-compare', + '-Wsign-promo', + '-Wsized-deallocation', + '-Wstrict-null-sentinel', + '-Wsuggest-final-methods', + '-Wsuggest-final-types', + '-Wsuggest-override', + '-Wuseless-cast', + '-Wvirtual-inheritance', + '-Wvolatile', + '-Wzero-as-null-pointer-constant', + ] + + elif cpp.get_id() == 'msvc' + all_cpp_warnings += [ + '/Wall', + '/experimental:external', + '/external:W0', + '/external:anglebrackets', + ] + endif + endif + + all_cpp_warnings = cpp.get_supported_arguments(all_cpp_warnings) + add_global_arguments(all_cpp_warnings, language: ['cpp']) +endif |