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set(_GNU_COMMON_C_CXX_FLAGS "\
-fexceptions \
-fno-common \
-fcolor-diagnostics \
-faligned-allocation \
-fdebug-default-version=4 \
-ffunction-sections \
-fdata-sections \
-Wall \
-Wextra \
-Wno-parentheses \
-Wno-implicit-const-int-float-conversion \
-Wno-unknown-warning-option \
-pipe \
-D_THREAD_SAFE \
-D_PTHREADS \
-D_REENTRANT \
-D_LARGEFILE_SOURCE \
-D__STDC_CONSTANT_MACROS \
-D__STDC_FORMAT_MACROS \
-D__LONG_LONG_SUPPORTED \
")
if (CMAKE_SYSTEM_NAME MATCHES "^(Android|Linux)$")
string(APPEND _GNU_COMMON_C_CXX_FLAGS " -D_GNU_SOURCE")
endif()
if (CMAKE_SYSTEM_NAME MATCHES "^(Darwin|Linux)$")
string(APPEND _GNU_COMMON_C_CXX_FLAGS " -DLIBCXX_BUILDING_LIBCXXRT")
endif()
if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
# Use .init_array instead of .ctors (default for old clang versions)
# See: https://maskray.me/blog/2021-11-07-init-ctors-init-array
string(APPEND _GNU_COMMON_C_CXX_FLAGS " -fuse-init-array")
endif()
if (ANDROID)
include_directories(SYSTEM ${CMAKE_ANDROID_NDK}/sources/cxx-stl/llvm-libc++abi/include)
# There is no usable _FILE_OFFSET_BITS=64 support in Androids until API 21. And it's incomplete until at least API 24.
# https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md
else()
string(APPEND _GNU_COMMON_C_CXX_FLAGS " -D_FILE_OFFSET_BITS=64")
endif()
if (CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm.*|aarch64|ppc64le)")
string(APPEND _GNU_COMMON_C_CXX_FLAGS " -fsigned-char")
endif()
include(global_flags.compiler.gnu.march)
string(APPEND _GNU_COMMON_C_CXX_FLAGS " ${_GNU_MARCH_C_CXX_FLAGS}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_GNU_COMMON_C_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${_GNU_COMMON_C_CXX_FLAGS} \
-Woverloaded-virtual \
-Wimport-preprocessor-directive-pedantic \
-Wno-undefined-var-template \
-Wno-return-std-move \
-Wno-defaulted-function-deleted \
-Wno-pessimizing-move \
-Wno-deprecated-anon-enum-enum-conversion \
-Wno-deprecated-enum-enum-conversion \
-Wno-deprecated-enum-float-conversion \
-Wno-ambiguous-reversed-operator \
-Wno-deprecated-volatile \
")
|
