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88 lines
3.1 KiB
88 lines
3.1 KiB
#.rst:
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# CheckIncludeFile
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# ----------------
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#
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# macro which checks the include file exists.
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#
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# CHECK_INCLUDE_FILE(INCLUDE VARIABLE)
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#
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# ::
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#
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# INCLUDE - name of include file
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# VARIABLE - variable to return result
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#
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#
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#
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# an optional third argument is the CFlags to add to the compile line or
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# you can use CMAKE_REQUIRED_FLAGS
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#
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# The following variables may be set before calling this macro to modify
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# the way the check is run:
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#
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# ::
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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#=============================================================================
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# Copyright 2002-2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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macro(CHECK_INCLUDE_FILE INCLUDE VARIABLE)
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if("${VARIABLE}" MATCHES "^${VARIABLE}$")
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if(CMAKE_REQUIRED_INCLUDES)
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set(CHECK_INCLUDE_FILE_C_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
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else()
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set(CHECK_INCLUDE_FILE_C_INCLUDE_DIRS)
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endif()
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set(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS})
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set(CHECK_INCLUDE_FILE_VAR ${INCLUDE})
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configure_file(${CMAKE_ROOT}/Modules/CheckIncludeFile.c.in
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFile.c)
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message(STATUS "Looking for ${INCLUDE}")
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if(${ARGC} EQUAL 3)
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set(CMAKE_C_FLAGS_SAVE ${CMAKE_C_FLAGS})
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${ARGV2}")
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endif()
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try_compile(${VARIABLE}
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${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFile.c
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS
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-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILE_FLAGS}
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"${CHECK_INCLUDE_FILE_C_INCLUDE_DIRS}"
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OUTPUT_VARIABLE OUTPUT)
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if(${ARGC} EQUAL 3)
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set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS_SAVE})
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endif()
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if(${VARIABLE})
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message(STATUS "Looking for ${INCLUDE} - found")
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set(${VARIABLE} 1 CACHE INTERNAL "Have include ${INCLUDE}")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the include file ${INCLUDE} "
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"exists passed with the following output:\n"
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"${OUTPUT}\n\n")
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else()
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message(STATUS "Looking for ${INCLUDE} - not found")
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set(${VARIABLE} "" CACHE INTERNAL "Have include ${INCLUDE}")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the include file ${INCLUDE} "
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"exists failed with the following output:\n"
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"${OUTPUT}\n\n")
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endif()
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endif()
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endmacro()
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