56 lines
2.2 KiB
CMake
56 lines
2.2 KiB
CMake
# - Check if the source code provided in the SOURCE argument compiles.
|
|
# CHECK_CXX_SOURCE_COMPILES(SOURCE VAR)
|
|
# - macro which checks if the source code compiles\
|
|
# SOURCE - source code to try to compile
|
|
# VAR - variable to store size if the type exists.
|
|
# Checks the following optional VARIABLES (not arguments)
|
|
# CMAKE_REQUIRED_LIBRARIES - Link to extra libraries
|
|
# CMAKE_REQUIRED_FLAGS - Extra flags to C compiler
|
|
#
|
|
|
|
MACRO(CHECK_CXX_SOURCE_COMPILES SOURCE VAR)
|
|
IF("${VAR}" MATCHES "^${VAR}$")
|
|
SET(MACRO_CHECK_FUNCTION_DEFINITIONS
|
|
"-D${VAR} ${CMAKE_REQUIRED_FLAGS}")
|
|
IF(CMAKE_REQUIRED_LIBRARIES)
|
|
SET(CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES
|
|
"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
|
|
ELSE(CMAKE_REQUIRED_LIBRARIES)
|
|
SET(CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES)
|
|
ENDIF(CMAKE_REQUIRED_LIBRARIES)
|
|
IF(CMAKE_REQUIRED_INCLUDES)
|
|
SET(CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES
|
|
"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
|
|
ELSE(CMAKE_REQUIRED_INCLUDES)
|
|
SET(CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES)
|
|
ENDIF(CMAKE_REQUIRED_INCLUDES)
|
|
FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/src.cxx"
|
|
"${SOURCE}")
|
|
|
|
MESSAGE(STATUS "Performing Test ${VAR}")
|
|
TRY_COMPILE(${VAR}
|
|
${CMAKE_BINARY_DIR}
|
|
${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/src.cxx
|
|
CMAKE_FLAGS
|
|
"${CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES}"
|
|
"${CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES}"
|
|
OUTPUT_VARIABLE OUTPUT)
|
|
IF(${VAR})
|
|
SET(${VAR} 1 CACHE INTERNAL "Test ${FUNCTION}")
|
|
MESSAGE(STATUS "Performing Test ${VAR} - Success")
|
|
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
|
|
"Performing C++ SOURCE FILE Test ${VAR} succeded with the following output:\n"
|
|
"${OUTPUT}\n"
|
|
"Source file was:\n${SOURCE}\n" APPEND)
|
|
ELSE(${VAR})
|
|
MESSAGE(STATUS "Performing Test ${VAR} - Failed")
|
|
SET(${VAR} "" CACHE INTERNAL "Test ${FUNCTION}")
|
|
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log
|
|
"Performing C++ SOURCE FILE Test ${VAR} failed with the following output:\n"
|
|
"${OUTPUT}\n"
|
|
"Source file was:\n${SOURCE}\n" APPEND)
|
|
ENDIF(${VAR})
|
|
ENDIF("${VAR}" MATCHES "^${VAR}$")
|
|
ENDMACRO(CHECK_CXX_SOURCE_COMPILES)
|
|
|