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cmake: add SDL_WERROR to conditionally enable/disable -Werror
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@ -509,6 +509,8 @@ dep_option(SDL_HIDAPI_JOYSTICK "Use HIDAPI for low level joystick drivers" O
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dep_option(SDL_VIRTUAL_JOYSTICK "Enable the virtual-joystick driver" ON SDL_HIDAPI OFF)
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set_option(SDL_ASAN "Use AddressSanitizer to detect memory errors" OFF)
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option(SDL_WERROR "Enable -Werror" OFF)
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option(SDL_SHARED "Build a shared version of the library" ${SDL_SHARED_ENABLED_BY_DEFAULT})
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option(SDL_STATIC "Build a static version of the library" ${SDL_STATIC_ENABLED_BY_DEFAULT})
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option(SDL_TEST "Build the SDL2_test library" ${SDL_TEST_ENABLED_BY_DEFAULT})
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@ -519,6 +521,26 @@ set_option(SDL_INSTALL_TESTS "Install test-cases" OFF)
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set(HAVE_STATIC_PIC "${SDL_STATIC_PIC}")
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if(SDL_WERROR)
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if(MSVC)
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cmake_push_check_state(RESET)
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check_c_compiler_flag(/WX HAVE_WX)
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if(HAVE_WX)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /WX")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /WX")
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endif()
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elseif(USE_GCC OR USE_CLANG)
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cmake_push_check_state(RESET)
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check_c_compiler_flag(-Werror HAVE_WERROR)
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if(HAVE_WERROR)
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
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set(CMAKE_OBJC_FLAGS "${CMAKE_OBJC_FLAGS} -Werror")
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endif()
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cmake_pop_check_state()
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endif()
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endif()
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if(SDL_HIDAPI)
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if(HIDAPI_ONLY_LIBUSB)
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set(SDL_HIDAPI_LIBUSB ON CACHE BOOL "" FORCE)
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@ -606,10 +628,12 @@ if(USE_GCC OR USE_CLANG)
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check_c_compiler_flag(-Wdeclaration-after-statement HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
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if(HAVE_GCC_WDECLARATION_AFTER_STATEMENT)
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if(SDL_WERROR)
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check_c_compiler_flag(-Werror=declaration-after-statement HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
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if(HAVE_GCC_WERROR_DECLARATION_AFTER_STATEMENT)
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list(APPEND EXTRA_CFLAGS "-Werror=declaration-after-statement")
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endif()
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endif()
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list(APPEND EXTRA_CFLAGS "-Wdeclaration-after-statement")
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endif()
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