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	Fix bug with cmake and old version of GCC
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				@ -21,7 +21,14 @@ set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE}
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string(REGEX MATCH "Clang" CMAKE_COMPILER_IS_CLANG "${CMAKE_C_COMPILER_ID}")
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if(CMAKE_COMPILER_IS_GNUCC)
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    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -W -Wdeclaration-after-statement -Wwrite-strings -Wlogical-op")
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    # some warnings we want are not available with old GCC versions
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    # note: starting with CMake 2.8 we could use CMAKE_C_COMPILER_VERSION
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    execute_process(COMMAND ${CMAKE_C_COMPILER} -dumpversion
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                    OUTPUT_VARIABLE GCC_VERSION)
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    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -W -Wdeclaration-after-statement -Wwrite-strings")
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    if (GCC_VERSION VERSION_GREATER 4.5 OR GCC_VERSION VERSION_EQUAL 4.5)
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        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wlogical-op")
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    endif()
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    set(CMAKE_C_FLAGS_RELEASE     "-O2")
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    set(CMAKE_C_FLAGS_DEBUG       "-O0 -g3")
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    set(CMAKE_C_FLAGS_COVERAGE    "-O0 -g3 --coverage")
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