129 lines
4.7 KiB
CMake
129 lines
4.7 KiB
CMake
|
macro(SDL_DetectCompiler)
|
||
|
|
set(USE_CLANG FALSE)
|
||
|
|
set(USE_GCC FALSE)
|
||
|
|
set(USE_INTELCC FALSE)
|
||
|
|
set(USE_QCC FALSE)
|
||
|
|
if(CMAKE_C_COMPILER_ID MATCHES "Clang|IntelLLVM")
|
||
|
|
set(USE_CLANG TRUE)
|
||
|
|
# Visual Studio 2019 v16.2 added support for Clang/LLVM.
|
||
|
|
# Check if a Visual Studio project is being generated with the Clang toolset.
|
||
|
|
if(MSVC)
|
||
|
|
set(MSVC_CLANG TRUE)
|
||
|
|
endif()
|
||
|
|
elseif(CMAKE_COMPILER_IS_GNUCC)
|
||
|
|
set(USE_GCC TRUE)
|
||
|
|
elseif(CMAKE_C_COMPILER_ID MATCHES "^Intel$")
|
||
|
|
set(USE_INTELCC TRUE)
|
||
|
|
elseif(CMAKE_C_COMPILER_ID MATCHES "QCC")
|
||
|
|
set(USE_QCC TRUE)
|
||
|
|
endif()
|
||
|
|
endmacro()
|
||
|
|
|
||
|
|
function(SDL_AddCommonCompilerFlags TARGET)
|
||
|
|
option(SDL_WERROR "Enable -Werror" OFF)
|
||
|
|
|
||
|
|
if(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QCC)
|
||
|
|
if(MINGW)
|
||
|
|
# See if GCC's -gdwarf-4 is supported
|
||
|
|
# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101377 for why this is needed on Windows
|
||
|
|
cmake_push_check_state()
|
||
|
|
check_c_compiler_flag("-gdwarf-4" HAVE_GDWARF_4)
|
||
|
|
if(HAVE_GDWARF_4)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-gdwarf-4")
|
||
|
|
endif()
|
||
|
|
cmake_pop_check_state()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
# Check for -Wall first, so later things can override pieces of it.
|
||
|
|
# Note: clang-cl treats -Wall as -Weverything (which is very loud),
|
||
|
|
# /W3 as -Wall, and /W4 as -Wall -Wextra. So: /W3 is enough.
|
||
|
|
check_c_compiler_flag(-Wall HAVE_GCC_WALL)
|
||
|
|
if(MSVC_CLANG)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "/W3")
|
||
|
|
elseif(HAVE_GCC_WALL)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wall")
|
||
|
|
if(HAIKU)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wno-multichar")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-Wundef HAVE_GCC_WUNDEF)
|
||
|
|
if(HAVE_GCC_WUNDEF)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wundef")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
|
||
|
|
if(HAVE_GCC_NO_STRICT_ALIASING)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-fno-strict-aliasing")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-Wdocumentation HAVE_GCC_WDOCUMENTATION)
|
||
|
|
if(HAVE_GCC_WDOCUMENTATION)
|
||
|
|
if(SDL_WERROR)
|
||
|
|
check_c_compiler_flag(-Werror=documentation HAVE_GCC_WERROR_DOCUMENTATION)
|
||
|
|
if(HAVE_GCC_WERROR_DOCUMENTATION)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Werror=documentation")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wdocumentation")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-Wdocumentation-unknown-command HAVE_GCC_WDOCUMENTATION_UNKNOWN_COMMAND)
|
||
|
|
if(HAVE_GCC_WDOCUMENTATION_UNKNOWN_COMMAND)
|
||
|
|
if(SDL_WERROR)
|
||
|
|
check_c_compiler_flag(-Werror=documentation-unknown-command HAVE_GCC_WERROR_DOCUMENTATION_UNKNOWN_COMMAND)
|
||
|
|
if(HAVE_GCC_WERROR_DOCUMENTATION_UNKNOWN_COMMAND)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Werror=documentation-unknown-command")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wdocumentation-unknown-command")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-fcomment-block-commands=threadsafety HAVE_GCC_COMMENT_BLOCK_COMMANDS)
|
||
|
|
if(HAVE_GCC_COMMENT_BLOCK_COMMANDS)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-fcomment-block-commands=threadsafety")
|
||
|
|
else()
|
||
|
|
check_c_compiler_flag(/clang:-fcomment-block-commands=threadsafety HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
|
||
|
|
if(HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "/clang:-fcomment-block-commands=threadsafety")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-Wshadow HAVE_GCC_WSHADOW)
|
||
|
|
if(HAVE_GCC_WSHADOW)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wshadow")
|
||
|
|
endif()
|
||
|
|
|
||
|
|
check_c_compiler_flag(-Wunused-local-typedefs HAVE_GCC_WUNUSED_LOCAL_TYPEDEFS)
|
||
|
|
if(HAVE_GCC_WUNUSED_LOCAL_TYPEDEFS)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Wno-unused-local-typedefs")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(SDL_WERROR)
|
||
|
|
if(MSVC)
|
||
|
|
check_c_compiler_flag(/WX HAVE_WX)
|
||
|
|
if(HAVE_WX)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "/WX")
|
||
|
|
endif()
|
||
|
|
elseif(USE_GCC OR USE_CLANG OR USE_INTELCC OR USE_QNX)
|
||
|
|
check_c_compiler_flag(-Werror HAVE_WERROR)
|
||
|
|
if(HAVE_WERROR)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-Werror")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
|
||
|
|
if(USE_CLANG)
|
||
|
|
check_c_compiler_flag("-fcolor-diagnostics" COMPILER_SUPPORTS_FCOLOR_DIAGNOSTICS)
|
||
|
|
if(COMPILER_SUPPORTS_FCOLOR_DIAGNOSTICS)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-fcolor-diagnostics")
|
||
|
|
endif()
|
||
|
|
else()
|
||
|
|
check_c_compiler_flag("-fdiagnostics-color=always" COMPILER_SUPPORTS_FDIAGNOSTICS_COLOR_ALWAYS)
|
||
|
|
if(COMPILER_SUPPORTS_FDIAGNOSTICS_COLOR_ALWAYS)
|
||
|
|
target_compile_options(${TARGET} PRIVATE "-fdiagnostics-color=always")
|
||
|
|
endif()
|
||
|
|
endif()
|
||
|
|
endfunction()
|