diff options
Diffstat (limited to 'meson')
| -rw-r--r-- | meson/library/meson.build | 31 | ||||
| -rw-r--r-- | meson/suppressions/meson.build | 92 | ||||
| -rw-r--r-- | meson/warnings/meson.build | 175 |
3 files changed, 298 insertions, 0 deletions
diff --git a/meson/library/meson.build b/meson/library/meson.build new file mode 100644 index 0000000..fffc831 --- /dev/null +++ b/meson/library/meson.build @@ -0,0 +1,31 @@ +# Copyright 2020-2022 David Robillard <d@drobilla.net> +# SPDX-License-Identifier: CC0-1.0 OR ISC + +# General definitions for building libraries. +# +# These are essentially workarounds for Meson/Windows/MSVC. Unfortunately, +# Meson's default_library option doesn't support shared and static builds very +# well. In particular, it's often necessary to define different symbols for +# static and shared builds of libraries so that symbols can be exported. To +# work around this, default_library=both isn't supported on Windows. On other +# platforms with GCC-like compilers, we can support both because symbols can +# safely be exported in the same way (giving them default visibility) in both +# static and shared builds. + +default_library = get_option('default_library') +host_system = host_machine.system() + +# Abort on Windows with default_library=both +if host_system == 'windows' and default_library == 'both' + error('default_library=both is not supported on Windows') +endif + +# Set library_suffix to the suffix for libraries +if host_system == 'windows' and default_library == 'shared' + # Meson appends a version to the name only for DLLs, which leads to + # inconsistent library names, like `mylib-1-1`. So, provide no suffix to + # ultimately get the same name as on other platforms, like `mylib-1`. + library_suffix = '' +else + library_suffix = '-@0@'.format(meson.project_version().split('.')[0]) +endif diff --git a/meson/suppressions/meson.build b/meson/suppressions/meson.build new file mode 100644 index 0000000..77de770 --- /dev/null +++ b/meson/suppressions/meson.build @@ -0,0 +1,92 @@ +# Copyright 2020-2022 David Robillard <d@drobilla.net> +# SPDX-License-Identifier: CC0-1.0 OR ISC + +# Project-specific warning suppressions. +# +# This should be used in conjunction with the generic "warnings" sibling that +# enables all reasonable warnings for the compiler. It lives here just to keep +# the top-level meson.build more readable. + +##### +# C # +##### + +if is_variable('cc') + c_suppressions = [] + + if get_option('strict') + if cc.get_id() == 'clang' + c_suppressions += [ + '-Wno-cast-align', + '-Wno-cast-qual', + '-Wno-conversion', + '-Wno-declaration-after-statement', + '-Wno-double-promotion', + '-Wno-format-nonliteral', + '-Wno-nullability-extension', + '-Wno-nullable-to-nonnull-conversion', + '-Wno-padded', + '-Wno-reserved-id-macro', + '-Wno-sign-conversion', + '-Wno-switch-enum', + '-Wno-unused-macros', + ] + + if host_machine.system() == 'freebsd' + c_suppressions += [ + '-Wno-c11-extensions', + ] + endif + + elif cc.get_id() == 'gcc' + c_suppressions += [ + '-Wno-cast-align', + '-Wno-cast-qual', + '-Wno-format-nonliteral', + '-Wno-inline', + '-Wno-padded', + '-Wno-sign-conversion', + '-Wno-strict-overflow', + '-Wno-suggest-attribute=const', + '-Wno-suggest-attribute=pure', + '-Wno-switch-default', + '-Wno-switch-enum', + '-Wno-unsuffixed-float-constants', + '-Wno-unused-const-variable', + '-Wno-unused-macros', + ] + + if host_machine.system() == 'windows' + c_suppressions += [ + '-Wno-float-conversion', + '-Wno-suggest-attribute=format', + ] + endif + + elif cc.get_id() == 'msvc' + c_suppressions += [ + '/wd4061', # enumerator in switch is not explicitly handled + '/wd4200', # zero-sized array in struct/union + '/wd4365', # signed/unsigned mismatch + '/wd4514', # unreferenced inline function has been removed + '/wd4706', # assignment within conditional expression + '/wd4710', # function not inlined + '/wd4711', # function selected for automatic inline expansion + '/wd4800', # implicit conversion from int to bool + '/wd4820', # padding added after construct + '/wd4996', # POSIX name for this item is deprecated + '/wd4996', # function or variable may be unsafe + '/wd5045', # will insert Spectre mitigation for memory load + ] + endif + endif + + if cc.get_id() == 'gcc' and host_machine.system() == 'windows' + c_suppressions += [ + '-Wno-format', + ] + endif + + c_suppressions = cc.get_supported_arguments(c_suppressions) +endif + diff --git a/meson/warnings/meson.build b/meson/warnings/meson.build new file mode 100644 index 0000000..4d23ad3 --- /dev/null +++ b/meson/warnings/meson.build @@ -0,0 +1,175 @@ +# 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') + # 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 + [ + '-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 + + all_c_warnings = cc.get_supported_arguments(all_c_warnings) + add_global_arguments(all_c_warnings, language: ['c']) +endif |