forked from Mirrors/openclonk
102 lines
4.6 KiB
CMake
102 lines
4.6 KiB
CMake
# - Check if the files can be included
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#
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# CHECK_INCLUDE_FILES_CXX(INCLUDE VARIABLE)
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#
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# INCLUDE - list of files to include
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# VARIABLE - variable to return result
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#
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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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 2003-2012 Kitware, Inc.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#=============================================================================
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macro(CHECK_INCLUDE_FILES_CXX INCLUDE VARIABLE)
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if(NOT DEFINED "${VARIABLE}")
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set(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
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if(CMAKE_REQUIRED_INCLUDES)
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set(CHECK_INCLUDE_FILES_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
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else()
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set(CHECK_INCLUDE_FILES_INCLUDE_DIRS)
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endif()
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set(CHECK_INCLUDE_FILES_CONTENT "/* */\n")
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set(MACRO_CHECK_INCLUDE_FILES_FLAGS ${CMAKE_REQUIRED_FLAGS})
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foreach(FILE ${INCLUDE})
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set(CMAKE_CONFIGURABLE_FILE_CONTENT
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"${CMAKE_CONFIGURABLE_FILE_CONTENT}#include <${FILE}>\n")
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endforeach()
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set(CMAKE_CONFIGURABLE_FILE_CONTENT
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"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n\nint main(){return 0;}\n")
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configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.cxx" @ONLY IMMEDIATE)
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set(_INCLUDE ${INCLUDE}) # remove empty elements
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if("${_INCLUDE}" MATCHES "^([^;]+);.+;([^;]+)$")
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list(LENGTH _INCLUDE _INCLUDE_LEN)
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set(_description "${_INCLUDE_LEN} C++ include files ${CMAKE_MATCH_1}, ..., ${CMAKE_MATCH_2}")
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elseif("${_INCLUDE}" MATCHES "^([^;]+);([^;]+)$")
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set(_description "C++ include files ${CMAKE_MATCH_1}, ${CMAKE_MATCH_2}")
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else()
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set(_description "C++ include file ${_INCLUDE}")
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endif()
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message(STATUS "Looking for ${_description}")
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try_compile(${VARIABLE}
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${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.cxx
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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_FILES_FLAGS}
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"${CHECK_INCLUDE_FILES_INCLUDE_DIRS}"
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OUTPUT_VARIABLE OUTPUT)
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if(${VARIABLE})
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message(STATUS "Looking for ${_description} - found")
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set(${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 C++ files ${INCLUDE} "
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"exist passed with the following output:\n"
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"${OUTPUT}\n\n")
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else()
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message(STATUS "Looking for ${_description} - not found")
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set(${VARIABLE} "" CACHE INTERNAL "Have includes ${INCLUDE}")
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file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if C++ files ${INCLUDE} "
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"exist failed with the following output:\n"
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"${OUTPUT}\nSource:\n${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
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endif()
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endif()
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endmacro()
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