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75 lines
2.1 KiB
CMake
75 lines
2.1 KiB
CMake
include(CheckCCompilerFlag)
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macro (checkCFlag FLAG)
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CHECK_C_COMPILER_FLAG("${FLAG}" CFLAG${FLAG})
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if(CFLAG${FLAG})
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string(APPEND CMAKE_C_FLAGS " ${FLAG}")
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else()
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message(WARNING "compiler does not support ${FLAG}")
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endif()
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endmacro()
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option(ENABLE_WARNING_VERBOSE "enable -Weveryting (and some exceptions) for compile" OFF)
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option(ENABLE_WARNING_ERROR "enable -Werror for compile" OFF)
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if (ENABLE_WARNING_VERBOSE)
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if (MSVC)
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# Remove previous warning definitions,
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# NMake is otherwise complaining.
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foreach (flags_var_to_scrub
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CMAKE_C_FLAGS
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CMAKE_C_FLAGS_DEBUG
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CMAKE_C_FLAGS_RELEASE
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CMAKE_C_FLAGS_RELWITHDEBINFO
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CMAKE_C_FLAGS_MINSIZEREL)
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string (REGEX REPLACE "(^| )[/-]W[ ]*[1-9]" " "
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"${flags_var_to_scrub}" "${${flags_var_to_scrub}}")
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endforeach()
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set(C_WARNING_FLAGS
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/W4
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/wo4324
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)
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else()
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set(C_WARNING_FLAGS
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-Weverything
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-Wall
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-Wpedantic
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-Wno-padded
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-Wno-switch-enum
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-Wno-cast-align
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-Wno-declaration-after-statement
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-Wno-unsafe-buffer-usage
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-Wno-reserved-identifier
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-Wno-covered-switch-default
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-Wno-disabled-macro-expansion
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-Wno-pre-c11-compat
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-Wno-gnu-zero-variadic-macro-arguments
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)
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endif()
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foreach(FLAG ${C_WARNING_FLAGS})
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CheckCFlag(${FLAG})
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endforeach()
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endif()
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if (ENABLE_WARNING_ERROR)
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CheckCFlag(-Werror)
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endif()
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CheckCFlag(-fno-omit-frame-pointer)
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if (CMAKE_C_COMPILER_ID MATCHES "Clang" OR CMAKE_C_COMPILER_ID MATCHES "GNU")
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if (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 10)
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add_compile_options($<$<NOT:$<CONFIG:Debug>>:-fdebug-prefix-map=${CMAKE_SOURCE_DIR}=.>)
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add_compile_options($<$<NOT:$<CONFIG:Debug>>:-fmacro-prefix-map=${CMAKE_SOURCE_DIR}=.>)
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add_compile_options($<$<NOT:$<CONFIG:Debug>>:-ffile-prefix-map=${CMAKE_SOURCE_DIR}=.>)
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add_compile_options($<$<NOT:$<CONFIG:Debug>>:-fdebug-prefix-map=${CMAKE_BINARY_DIR}=./build>)
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add_compile_options($<$<NOT:$<CONFIG:Debug>>:-fmacro-prefix-map=${CMAKE_BINARY_DIR}=./build>)
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add_compile_options($<$<NOT:$<CONFIG:Debug>>:-ffile-prefix-map=${CMAKE_BINARY_DIR}=./build>)
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endif()
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endif()
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set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} CACHE STRING "default CFLAGS")
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message("Using CFLAGS ${CMAKE_C_FLAGS}")
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