mirror of
https://github.com/VectorCamp/vectorscan.git
synced 2025-06-28 16:41:01 +03:00
96 lines
3.5 KiB
CMake
96 lines
3.5 KiB
CMake
# set compiler flags - more are tested and added later
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set(EXTRA_C_FLAGS "${OPT_C_FLAG} -std=c17 -Wall -Wextra ")
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set(EXTRA_CXX_FLAGS "${OPT_CXX_FLAG} -std=c++17 -Wall -Wextra ")
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if (NOT CMAKE_COMPILER_IS_CLANG)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -fno-new-ttp-matching")
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endif()
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# Always use -Werror *also during release builds
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set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Wall -Werror")
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wall -Werror")
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if (DISABLE_ASSERTS)
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set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -DNDEBUG")
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -DNDEBUG")
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endif()
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if(CMAKE_COMPILER_IS_GNUCC)
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# spurious warnings?
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set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Wno-array-bounds ") #-Wno-maybe-uninitialized")
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endif()
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if(CMAKE_COMPILER_IS_GNUCXX)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-maybe-uninitialized -Wno-uninitialized")
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endif()
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CHECK_INCLUDE_FILES(unistd.h HAVE_UNISTD_H)
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CHECK_FUNCTION_EXISTS(posix_memalign HAVE_POSIX_MEMALIGN)
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CHECK_FUNCTION_EXISTS(_aligned_malloc HAVE__ALIGNED_MALLOC)
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if(FREEBSD OR NETBSD)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -gdwarf-4")
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endif()
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# these end up in the config file
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CHECK_C_COMPILER_FLAG(-fvisibility=hidden HAS_C_HIDDEN)
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CHECK_CXX_COMPILER_FLAG(-fvisibility=hidden HAS_CXX_HIDDEN)
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# are we using libc++
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CHECK_CXX_SYMBOL_EXISTS(_LIBCPP_VERSION ciso646 HAVE_LIBCPP)
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if (RELEASE_BUILD)
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if (HAS_C_HIDDEN)
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set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -fvisibility=hidden")
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endif()
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if (HAS_CXX_HIDDEN)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -fvisibility=hidden")
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endif()
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endif()
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# testing a builtin takes a little more work
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CHECK_C_SOURCE_COMPILES("void *aa_test(void *x) { return __builtin_assume_aligned(x, 16);}\nint main(void) { return 0; }" HAVE_CC_BUILTIN_ASSUME_ALIGNED)
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CHECK_CXX_SOURCE_COMPILES("void *aa_test(void *x) { return __builtin_assume_aligned(x, 16);}\nint main(void) { return 0; }" HAVE_CXX_BUILTIN_ASSUME_ALIGNED)
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# Clang does not use __builtin_constant_p() the same way as gcc
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if (NOT CMAKE_COMPILER_IS_CLANG)
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CHECK_C_SOURCE_COMPILES("int main(void) { __builtin_constant_p(0); }" HAVE__BUILTIN_CONSTANT_P)
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endif()
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# clang-14 complains about unused-but-set variable.
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CHECK_CXX_COMPILER_FLAG("-Wunused-but-set-variable" CXX_UNUSED_BUT_SET_VAR)
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if (CXX_UNUSED_BUT_SET_VAR)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-unused-but-set-variable")
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endif()
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CHECK_CXX_COMPILER_FLAG("-Wignored-attributes" CXX_IGNORED_ATTR)
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if(CMAKE_COMPILER_IS_GNUCC)
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if (CXX_IGNORED_ATTR)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-ignored-attributes")
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endif()
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endif()
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CHECK_CXX_COMPILER_FLAG("-Wignored-attributes" CXX_NON_NULL)
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if(CMAKE_COMPILER_IS_GNUCC)
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if (CXX_NON_NULL)
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-nonnull")
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endif()
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endif()
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# note this for later, g++ doesn't have this flag but clang does
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CHECK_CXX_COMPILER_FLAG("-Wweak-vtables" CXX_WEAK_VTABLES)
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CHECK_CXX_COMPILER_FLAG("-Wmissing-declarations" CXX_MISSING_DECLARATIONS)
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CHECK_CXX_COMPILER_FLAG("-Wunused-local-typedefs" CXX_UNUSED_LOCAL_TYPEDEFS)
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CHECK_CXX_COMPILER_FLAG("-Wunused-variable" CXX_WUNUSED_VARIABLE)
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# gcc complains about this
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if(CMAKE_COMPILER_IS_GNUCC)
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CHECK_C_COMPILER_FLAG("-Wstringop-overflow" CC_STRINGOP_OVERFLOW)
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CHECK_CXX_COMPILER_FLAG("-Wstringop-overflow" CXX_STRINGOP_OVERFLOW)
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if(CC_STRINGOP_OVERFLOW OR CXX_STRINGOP_OVERFLOW)
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set(EXTRA_C_FLAGS "${EXTRA_C_FLAGS} -Wno-stringop-overflow -Wno-stringop-overread")
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set(EXTRA_CXX_FLAGS "${EXTRA_CXX_FLAGS} -Wno-stringop-overflow -Wno-stringop-overread")
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endif()
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endif()
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