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Workaround for distributions who already define _FORTIFY_SOURCE by default (eg Gentoo) and do not redefine it then.

meow-7.2.2
Nicky 2017-01-16 15:54:24 +01:00
parent 2b8a91b1c0
commit bcd75a538e
1 changed files with 16 additions and 1 deletions
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17
indra/cmake/00-Common.cmake
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@ -105,7 +105,22 @@ endif (WINDOWS)
if (LINUX)
set(CMAKE_SKIP_RPATH TRUE)
add_definitions(-D_FORTIFY_SOURCE=2)
# <FS:ND/>
# And another hack for FORTIFY_SOURCE. Some distributions (for example Gentoo) define FORTIFY_SOURCE by default.
# Check if this is the case, if yes, do not define it again.
execute_process(
COMMAND echo "int main( char **a, int c ){ \n#ifdef _FORTIFY_SOURCE\n#error FORTITY_SOURCE_SET\n#else\nreturn 0;\n#endif\n}"
COMMAND sh -c "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -xc++ -w - -o /dev/null"
OUTPUT_VARIABLE FORTIFY_SOURCE_OUT
ERROR_VARIABLE FORTIFY_SOURCE_ERR
RESULT_VARIABLE FORTIFY_SOURCE_RES
)
if ( ${FORTIFY_SOURCE_RES} EQUAL 0 )
add_definitions(-D_FORTIFY_SOURCE=2)
endif()
set(CMAKE_CXX_FLAGS "-Wno-deprecated -Wno-unused-but-set-variable -Wno-unused-variable ${CMAKE_CXX_FLAGS}")