CheckIncludeFiles

Check if the files can be included

CHECK_INCLUDE_FILES(INCLUDE VARIABLE)

INCLUDE  - list of files to include
VARIABLE - variable to return result

The following variables may be set before calling this macro to modify the way the check is run:

CMAKE_REQUIRED_FLAGS = string of compile command line flags
CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
CMAKE_REQUIRED_INCLUDES = list of include directories