https://github.com/Kitware/CMake
Tip revision: 707b3e0809e95aa19e154c36a82208ec58aa2952 authored by Bill Hoffman on 21 January 2008, 17:56:51 UTC
ENH: final 2.4.8
ENH: final 2.4.8
Tip revision: 707b3e0
TestCXXAcceptsFlag.cmake
# - Test CXX compiler for a flag
# Check if the CXX compiler accepts a flag
#
# Macro CHECK_CXX_ACCEPTS_FLAG(FLAGS VARIABLE) -
# checks if the function exists
# FLAGS - the flags to try
# VARIABLE - variable to store the result
#
MACRO(CHECK_CXX_ACCEPTS_FLAG FLAGS VARIABLE)
IF(NOT DEFINED ${VARIABLE})
MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS}")
TRY_COMPILE(${VARIABLE}
${CMAKE_BINARY_DIR}
${CMAKE_ROOT}/Modules/DummyCXXFile.cxx
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${FLAGS}
OUTPUT_VARIABLE OUTPUT)
IF(${VARIABLE})
MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - yes")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the CXX compiler accepts the flag ${FLAGS} passed with "
"the following output:\n${OUTPUT}\n\n")
ELSE(${VARIABLE})
MESSAGE(STATUS "Checking to see if CXX compiler accepts flag ${FLAGS} - no")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the CXX compiler accepts the flag ${FLAGS} failed with "
"the following output:\n${OUTPUT}\n\n")
ENDIF(${VARIABLE})
ENDIF(NOT DEFINED ${VARIABLE})
ENDMACRO(CHECK_CXX_ACCEPTS_FLAG)