| #.rst: |
| # CheckIncludeFileCXX |
| # ------------------- |
| # |
| # 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 |
| |
| #============================================================================= |
| # Copyright 2002-2009 Kitware, Inc. |
| # |
| # Distributed under the OSI-approved BSD License (the "License"); |
| # see accompanying file Copyright.txt for details. |
| # |
| # This software is distributed WITHOUT ANY WARRANTY; without even the |
| # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| # See the License for more information. |
| #============================================================================= |
| # (To distribute this file outside of CMake, substitute the full |
| # License text for the above reference.) |
| |
| 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() |
| set(CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS) |
| endif() |
| 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) |
| 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} ${ARGV2}") |
| endif() |
| |
| try_compile(${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 ${CMAKE_CXX_FLAGS_SAVE}) |
| endif() |
| |
| if(${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() |
| 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() |
| endif() |
| endmacro() |