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build: disable -Wsuggest compile flags by default

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Although the flags are useful to see what the compiler thinks we can
improve on, it adds a lot of noise to the build output. That makes it
harder to spot actual issues that may be flagged.

Closes https://github.com/neovim/neovim/issues/19160.
This commit is contained in:
Dundar Goc
2022-06-30 20:58:05 +02:00
parent 2b1abe3c9d
commit 1d88ad6bfe
1 changed files with 19 additions and 16 deletions
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35
CMakeLists.txt
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@ -274,6 +274,7 @@ int main(void)
}
" HAVE_BUILTIN_ADD_OVERFLOW)
option(ENABLE_COMPILER_SUGGESTIONS "Enable -Wsuggest compiler warnings" OFF)
if(MSVC)
# XXX: /W4 gives too many warnings. #3241
add_compile_options(/W3)
@ -292,25 +293,27 @@ else()
add_compile_options(-Wimplicit-fallthrough)
endif()
# Clang doesn't have -Wsuggest-attribute so check for each one.
check_c_compiler_flag(-Wsuggest-attribute=pure HAVE_WSUGGEST_ATTRIBUTE_PURE)
if(HAVE_WSUGGEST_ATTRIBUTE_PURE)
add_compile_options(-Wsuggest-attribute=pure)
endif()
if(ENABLE_COMPILER_SUGGESTIONS)
# Clang doesn't have -Wsuggest-attribute so check for each one.
check_c_compiler_flag(-Wsuggest-attribute=pure HAVE_WSUGGEST_ATTRIBUTE_PURE)
if(HAVE_WSUGGEST_ATTRIBUTE_PURE)
add_compile_options(-Wsuggest-attribute=pure)
endif()
check_c_compiler_flag(-Wsuggest-attribute=const HAVE_WSUGGEST_ATTRIBUTE_CONST)
if(HAVE_WSUGGEST_ATTRIBUTE_CONST)
add_compile_options(-Wsuggest-attribute=const)
endif()
check_c_compiler_flag(-Wsuggest-attribute=const HAVE_WSUGGEST_ATTRIBUTE_CONST)
if(HAVE_WSUGGEST_ATTRIBUTE_CONST)
add_compile_options(-Wsuggest-attribute=const)
endif()
check_c_compiler_flag(-Wsuggest-attribute=malloc HAVE_WSUGGEST_ATTRIBUTE_MALLOC)
if(HAVE_WSUGGEST_ATTRIBUTE_MALLOC)
add_compile_options(-Wsuggest-attribute=malloc)
endif()
check_c_compiler_flag(-Wsuggest-attribute=malloc HAVE_WSUGGEST_ATTRIBUTE_MALLOC)
if(HAVE_WSUGGEST_ATTRIBUTE_MALLOC)
add_compile_options(-Wsuggest-attribute=malloc)
endif()
check_c_compiler_flag(-Wsuggest-attribute=cold HAVE_WSUGGEST_ATTRIBUTE_COLD)
if(HAVE_WSUGGEST_ATTRIBUTE_COLD)
add_compile_options(-Wsuggest-attribute=cold)
check_c_compiler_flag(-Wsuggest-attribute=cold HAVE_WSUGGEST_ATTRIBUTE_COLD)
if(HAVE_WSUGGEST_ATTRIBUTE_COLD)
add_compile_options(-Wsuggest-attribute=cold)
endif()
endif()
# On FreeBSD 64 math.h uses unguarded C11 extension, which taints clang