CheckIncludeFiles
Provides a macro to check if a list of one or more header files can be included together in C.
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CHECK_INCLUDE_FILES
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CHECK_INCLUDE_FILES("<includes>" <variable>)Check if the given <includes>list may be included together in aCsource file and store the result in an internal cache entry named<variable>. Specify the<includes>argument as a ;-list of header file names.
The following variables may be set before calling this macro to modify the way the check is run:
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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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CMAKE_REQUIRED_QUIET
- execute quietly without messages
See modules CheckIncludeFile and CheckIncludeFileCXX to check for a single header file in C or CXX languages.
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Licensed under the BSD 3-clause License.
    https://cmake.org/cmake/help/v3.5/module/CheckIncludeFiles.html