CheckIncludeFileCXX
Provides a macro to check if a header file can be included in CXX.
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CHECK_INCLUDE_FILE_CXX
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CHECK_INCLUDE_FILE_CXX(<include> <variable> [<flags>]) Check if the given <include>file may be included in aCXXsource file and store the result in an internal cache entry named<variable>. The optional third argument may be used to add compilation flags to the check (or useCMAKE_REQUIRED_FLAGSbelow).
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 CheckIncludeFiles to check for one or more C headers.
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Licensed under the BSD 3-clause License.
    https://cmake.org/cmake/help/v3.5/module/CheckIncludeFileCXX.html