Uploaded Test files
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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#[=======================================================================[.rst:
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CheckIncludeFiles
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-----------------
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Provides a macro to check if a list of one or more header files can
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be included together.
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.. command:: CHECK_INCLUDE_FILES
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.. code-block:: cmake
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CHECK_INCLUDE_FILES("<includes>" <variable> [LANGUAGE <language>])
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Check if the given ``<includes>`` list may be included together
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in a source file and store the result in an internal cache
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entry named ``<variable>``. Specify the ``<includes>`` argument
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as a :ref:`;-list <CMake Language Lists>` of header file names.
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If ``LANGUAGE`` is set, the specified compiler will be used to perform the
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check. Acceptable values are ``C`` and ``CXX``. If not set, the C compiler
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will be used if enabled. If the C compiler is not enabled, the C++
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compiler will be used if enabled.
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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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``CMAKE_REQUIRED_FLAGS``
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string of compile command line flags.
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``CMAKE_REQUIRED_DEFINITIONS``
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a :ref:`;-list <CMake Language Lists>` of macros to define (-DFOO=bar).
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``CMAKE_REQUIRED_INCLUDES``
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a :ref:`;-list <CMake Language Lists>` of header search paths to pass to
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the compiler.
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``CMAKE_REQUIRED_LINK_OPTIONS``
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a :ref:`;-list <CMake Language Lists>` of options to add to the link command.
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``CMAKE_REQUIRED_LIBRARIES``
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a :ref:`;-list <CMake Language Lists>` of libraries to add to the link
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command. See policy :policy:`CMP0075`.
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``CMAKE_REQUIRED_QUIET``
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execute quietly without messages.
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See modules :module:`CheckIncludeFile` and :module:`CheckIncludeFileCXX`
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to check for a single header file in ``C`` or ``CXX`` languages.
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#]=======================================================================]
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include_guard(GLOBAL)
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macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE)
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if(NOT DEFINED "${VARIABLE}")
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set(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
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if("x${ARGN}" STREQUAL "x")
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if(CMAKE_C_COMPILER_LOADED)
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set(_lang C)
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elseif(CMAKE_CXX_COMPILER_LOADED)
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set(_lang CXX)
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else()
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message(FATAL_ERROR "CHECK_INCLUDE_FILES needs either C or CXX language enabled.\n")
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endif()
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elseif("x${ARGN}" MATCHES "^xLANGUAGE;([a-zA-Z]+)$")
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set(_lang "${CMAKE_MATCH_1}")
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elseif("x${ARGN}" MATCHES "^xLANGUAGE$")
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message(FATAL_ERROR "No languages listed for LANGUAGE option.\nSupported languages: C, CXX.\n")
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else()
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message(FATAL_ERROR "Unknown arguments:\n ${ARGN}\n")
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endif()
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if(_lang STREQUAL "C")
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set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckIncludeFiles/${VARIABLE}.c)
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elseif(_lang STREQUAL "CXX")
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set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckIncludeFiles/${VARIABLE}.cpp)
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else()
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message(FATAL_ERROR "Unknown language:\n ${_lang}\nSupported languages: C, CXX.\n")
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endif()
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if(CMAKE_REQUIRED_INCLUDES)
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set(CHECK_INCLUDE_FILES_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${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 ${INCLUDE})
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string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT
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"#include <${FILE}>\n")
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endforeach()
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string(APPEND CMAKE_CONFIGURABLE_FILE_CONTENT
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"\n\nint main(void){return 0;}\n")
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configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
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"${src}" @ONLY)
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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} include files ${CMAKE_MATCH_1}, ..., ${CMAKE_MATCH_2}")
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elseif("${_INCLUDE}" MATCHES "^([^;]+);([^;]+)$")
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set(_description "include files ${CMAKE_MATCH_1}, ${CMAKE_MATCH_2}")
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else()
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set(_description "include file ${_INCLUDE}")
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endif()
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set(_CIF_LINK_OPTIONS)
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if(CMAKE_REQUIRED_LINK_OPTIONS)
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set(_CIF_LINK_OPTIONS LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
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endif()
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set(_CIF_LINK_LIBRARIES "")
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if(CMAKE_REQUIRED_LIBRARIES)
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cmake_policy(GET CMP0075 _CIF_CMP0075
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PARENT_SCOPE # undocumented, do not use outside of CMake
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)
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if("x${_CIF_CMP0075}x" STREQUAL "xNEWx")
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set(_CIF_LINK_LIBRARIES LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
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elseif("x${_CIF_CMP0075}x" STREQUAL "xOLDx")
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elseif(NOT _CIF_CMP0075_WARNED)
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set(_CIF_CMP0075_WARNED 1)
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message(AUTHOR_WARNING
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"Policy CMP0075 is not set: Include file check macros honor CMAKE_REQUIRED_LIBRARIES. "
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"Run \"cmake --help-policy CMP0075\" for policy details. "
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"Use the cmake_policy command to set the policy and suppress this warning."
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"\n"
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"CMAKE_REQUIRED_LIBRARIES is set to:\n"
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" ${CMAKE_REQUIRED_LIBRARIES}\n"
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"For compatibility with CMake 3.11 and below this check is ignoring it."
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)
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endif()
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unset(_CIF_CMP0075)
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endif()
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if(NOT CMAKE_REQUIRED_QUIET)
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message(CHECK_START "Looking for ${_description}")
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endif()
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try_compile(${VARIABLE}
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${CMAKE_BINARY_DIR}
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${src}
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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${_CIF_LINK_OPTIONS}
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${_CIF_LINK_LIBRARIES}
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CMAKE_FLAGS
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-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_INCLUDE_FILES_FLAGS}
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"${CHECK_INCLUDE_FILES_INCLUDE_DIRS}"
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OUTPUT_VARIABLE OUTPUT)
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unset(_CIF_LINK_OPTIONS)
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unset(_CIF_LINK_LIBRARIES)
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if(${VARIABLE})
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if(NOT CMAKE_REQUIRED_QUIET)
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message(CHECK_PASS "found")
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endif()
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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 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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if(NOT CMAKE_REQUIRED_QUIET)
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message(CHECK_FAIL "not found")
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endif()
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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 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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