| # - Check if the include file exists. |
| # CHECK_INCLUDE_FILE_CXX(INCLUDE VARIABLE) |
| # |
| # INCLUDE - name of include file |
| # VARIABLE - variable to return result |
| # |
| # An optional third argument is the CFlags to add to the compile line |
| # or you can use CMAKE_REQUIRED_FLAGS. |
| # |
| # 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 |
| # |
| MACRO(CHECK_INCLUDE_FILE_CXX INCLUDE VARIABLE) |
| IF("${VARIABLE}" MATCHES "^${VARIABLE}$") |
| IF(CMAKE_REQUIRED_INCLUDES) |
| SET(CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}") |
| ELSE(CMAKE_REQUIRED_INCLUDES) |
| SET(CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS) |
| ENDIF(CMAKE_REQUIRED_INCLUDES) |
| SET(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS}) |
| SET(CHECK_INCLUDE_FILE_VAR ${INCLUDE}) |
| CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CheckIncludeFile.cxx.in |
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFile.cxx IMMEDIATE) |
| MESSAGE(STATUS "Looking for C++ include ${INCLUDE}") |
| IF(${ARGC} EQUAL 3) |
| SET(CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS}) |
| SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ARGV2}") |
| ENDIF(${ARGC} EQUAL 3) |
| |
| TRY_COMPILE(${VARIABLE} |
| ${CMAKE_BINARY_DIR} |
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFile.cxx |
| COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} |
| CMAKE_FLAGS |
| -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILE_FLAGS} |
| "${CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS}" |
| OUTPUT_VARIABLE OUTPUT) |
| |
| IF(${ARGC} EQUAL 3) |
| SET(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS_SAVE}) |
| ENDIF(${ARGC} EQUAL 3) |
| |
| IF(${VARIABLE}) |
| MESSAGE(STATUS "Looking for C++ include ${INCLUDE} - found") |
| SET(${VARIABLE} 1 CACHE INTERNAL "Have include ${INCLUDE}") |
| FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log |
| "Determining if the include file ${INCLUDE} " |
| "exists passed with the following output:\n" |
| "${OUTPUT}\n\n") |
| ELSE(${VARIABLE}) |
| MESSAGE(STATUS "Looking for C++ include ${INCLUDE} - not found") |
| SET(${VARIABLE} "" CACHE INTERNAL "Have include ${INCLUDE}") |
| FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log |
| "Determining if the include file ${INCLUDE} " |
| "exists failed with the following output:\n" |
| "${OUTPUT}\n\n") |
| ENDIF(${VARIABLE}) |
| ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$") |
| ENDMACRO(CHECK_INCLUDE_FILE_CXX) |