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SET(VAR HAVE_VISIBILITY)
IF(NOT DEFINED ${VAR})
SET(SOURCE
"void __attribute__((visibility(\"default\"))) test() {}
#ifdef __INTEL_COMPILER
#error ICC breaks with binutils and visibility
#endif
int main(){}
")
FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeTmp/src.c" "${SOURCE}")
MESSAGE(STATUS "Performing Test ${VAR}")
TRY_COMPILE(${VAR}
${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}/CMakeTmp/src.c
CMAKE_FLAGS
"-DCOMPILE_DEFINITIONS:STRING=-fvisibility=hidden"
OUTPUT_VARIABLE OUTPUT)
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeOutput.log
"Performing manual C SOURCE FILE Test ${VAR} with the following output:\n"
"${OUTPUT}\n"
"Source file was:\n${SOURCE}\n" APPEND)
SET(${VAR} ${${VAR}} CACHE INTERNAL "Test Visibility")
IF(${VAR})
MESSAGE(STATUS "Performing Test ${VAR} - Success")
ELSE(${VAR})
MESSAGE(STATUS "Performing Test ${VAR} - Failed")
ENDIF(${VAR})
ENDIF(NOT DEFINED ${VAR})
IF(${VAR})
ADD_DEFINITIONS(-fvisibility=hidden)
ADD_DEFINITIONS(-DHAVE_GCC_VISIBILITY)
ENDIF(${VAR})
|
