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SDL/cmake/sdlcompilers.cmake

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CMake
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cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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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(${TARGET} PRIVATE "-Wno-multichar")
endif()
endif()
check_c_compiler_flag(-Wundef HAVE_GCC_WUNDEF)
if(HAVE_GCC_WUNDEF)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Wundef>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
check_c_compiler_flag(-fno-strict-aliasing HAVE_GCC_NO_STRICT_ALIASING)
if(HAVE_GCC_NO_STRICT_ALIASING)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-fno-strict-aliasing>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
check_c_compiler_flag(-Wdocumentation HAVE_GCC_WDOCUMENTATION)
if(HAVE_GCC_WDOCUMENTATION)
if(SDL_WERROR)
check_c_compiler_flag(-Werror=documentation HAVE_GCC_WERROR_DOCUMENTATION)
if(HAVE_GCC_WERROR_DOCUMENTATION)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Werror=documentation>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
endif()
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Wdocumentation>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
check_c_compiler_flag(-Wdocumentation-unknown-command HAVE_GCC_WDOCUMENTATION_UNKNOWN_COMMAND)
if(HAVE_GCC_WDOCUMENTATION_UNKNOWN_COMMAND)
if(SDL_WERROR)
check_c_compiler_flag(-Werror=documentation-unknown-command HAVE_GCC_WERROR_DOCUMENTATION_UNKNOWN_COMMAND)
if(HAVE_GCC_WERROR_DOCUMENTATION_UNKNOWN_COMMAND)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Werror=documentation-unknown-command>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
endif()
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Wdocumentation-unknown-command>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
check_c_compiler_flag(-fcomment-block-commands=threadsafety HAVE_GCC_COMMENT_BLOCK_COMMANDS)
if(HAVE_GCC_COMMENT_BLOCK_COMMANDS)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-fcomment-block-commands=threadsafety>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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else()
check_c_compiler_flag(/clang:-fcomment-block-commands=threadsafety HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
if(HAVE_CLANG_COMMENT_BLOCK_COMMANDS)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:/clang:-fcomment-block-commands=threadsafety>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
endif()
check_c_compiler_flag(-Wshadow HAVE_GCC_WSHADOW)
if(HAVE_GCC_WSHADOW)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Wshadow>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
check_c_compiler_flag(-Wunused-local-typedefs HAVE_GCC_WUNUSED_LOCAL_TYPEDEFS)
if(HAVE_GCC_WUNUSED_LOCAL_TYPEDEFS)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Wno-unused-local-typedefs>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
endif()
if(SDL_WERROR)
if(MSVC)
check_c_compiler_flag(/WX HAVE_WX)
if(HAVE_WX)
target_compile_options(${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)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-Werror>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
endif()
endif()
if(USE_CLANG)
check_c_compiler_flag("-fcolor-diagnostics" COMPILER_SUPPORTS_FCOLOR_DIAGNOSTICS)
if(COMPILER_SUPPORTS_FCOLOR_DIAGNOSTICS)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-fcolor-diagnostics>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
else()
check_c_compiler_flag("-fdiagnostics-color=always" COMPILER_SUPPORTS_FDIAGNOSTICS_COLOR_ALWAYS)
if(COMPILER_SUPPORTS_FDIAGNOSTICS_COLOR_ALWAYS)
Use SDL_DISABLE_ALLOCA instead of HAVE_ALLOCA in SDL_stdinc.h
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target_compile_options(${TARGET} PRIVATE "$<$<COMPILE_LANGUAGE:C,CXX>:-fdiagnostics-color=always>")
cmake: bump minimum required CMake version to 3.16 main features: - No more sdl-build-options/sdl-shared-build-options/sdl-global-options - Dependency information is stored on SDL3-collector for sdl3.pc - Use helper functions to modify the SDL targets; - sdl_sources to add sources - sdl_glob_sources to add glob soruces - sdl_link_dependency to add a link dependency that might also appear in sdl3.pc/SDL3Config.cmake - sdl_compile_definitions to add macro's - sdl_compile_options for compile options - sdl_include_directories for include directories They avoid repeated checks for existence of the SDL targets - A nice feature of the previous is the ability to generate a sdl3.pc or SDL3Config.cmake that describes its dependencies accurately. various: - remove duplicate libc symbol list - add CheckVulkan - remove unused HAVE_MPROTECT - add checks for getpagesize
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endif()
endif()
endfunction()