63 lines
2.7 KiB
CMake
63 lines
2.7 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.
|
|
#
|
|
# The following variables may be set before calling this macro to
|
|
# modify the way the check is run:
|
|
#
|
|
# CMAKE_REQUIRED_FLAGS = string of compile command line flags
|
|
# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
|
|
# CMAKE_REQUIRED_INCLUDES = list of include directories
|
|
# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
|
|
|
|
MACRO(CHECK_CXX_SOURCE_RUNS SOURCE VAR COMMENT)
|
|
IF("HAVE_${VAR}" MATCHES "^HAVE_${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=${CMAKE_REQUIRED_INCLUDES}")
|
|
ELSE(CMAKE_REQUIRED_INCLUDES)
|
|
SET(CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES)
|
|
ENDIF(CMAKE_REQUIRED_INCLUDES)
|
|
SET(CMAKE_EMPTY_INPUT_FILE_CONTENT "${SOURCE}")
|
|
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/CMakeEmptyInputFile.in"
|
|
"${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/src.cxx" IMMEDIATE)
|
|
|
|
MESSAGE(STATUS "Performing Test ${COMMENT}")
|
|
TRY_RUN(${VAR} HAVE_${VAR}
|
|
${CMAKE_BINARY_DIR}
|
|
${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/src.cxx
|
|
COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
|
|
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
|
|
"${CHECK_CXX_SOURCE_COMPILES_ADD_LIBRARIES}"
|
|
"${CHECK_CXX_SOURCE_COMPILES_ADD_INCLUDES}"
|
|
OUTPUT_VARIABLE OUTPUT)
|
|
IF(HAVE_${VAR})
|
|
SET(${VAR} 1 CACHE INTERNAL "Test ${COMMENT}")
|
|
MESSAGE(STATUS "Performing Test ${COMMENT} - Success")
|
|
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
|
|
"Performing C++ SOURCE FILE Test ${COMMENT} succeded with the following output:\n"
|
|
"${OUTPUT}\n"
|
|
"Source file was:\n${SOURCE}\n")
|
|
ELSE(HAVE_${VAR})
|
|
MESSAGE(STATUS "Performing Test ${COMMENT} - Failed")
|
|
SET(${VAR} "" CACHE INTERNAL "Test ${COMMENT}")
|
|
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log
|
|
"Performing C++ SOURCE FILE Test ${COMMENT} failed with the following output:\n"
|
|
"${OUTPUT}\n"
|
|
"Source file was:\n${SOURCE}\n")
|
|
ENDIF(HAVE_${VAR})
|
|
ENDIF("HAVE_${VAR}" MATCHES "^HAVE_${VAR}$")
|
|
ENDMACRO(CHECK_CXX_SOURCE_RUNS)
|
|
|
|
|