CheckIncludeFiles¶
Provides a macro to check if a list of one or more header files can be included together.
- CHECK_INCLUDE_FILES¶
CHECK_INCLUDE_FILES("<includes>" <variable> [LANGUAGE <language>])
Check if the given
<includes>
list may be included together in a source file and store the result in an internal cache entry named<variable>
. Specify the<includes>
argument as a ;-list of header file names.If
LANGUAGE
is set, the specified compiler will be used to perform the check. Acceptable values areC
andCXX
. If not set, the C compiler will be used if enabled. If the C compiler is not enabled, the C++ compiler will be used if enabled.
The following variables may be set before calling this macro to modify the way the check is run:
CMAKE_REQUIRED_FLAGS
String of additional flags to pass to the compiler. The string must be space-delimited--a ;-list will not work. The contents of
CMAKE_<LANG>_FLAGS
and its associated configuration-specific variable are automatically added to the compiler command before the contents ofCMAKE_REQUIRED_FLAGS
.
CMAKE_REQUIRED_DEFINITIONS
A ;-list of compiler definitions of the form
-DFOO
or-DFOO=bar
. A definition for the name specified by<resultVar>
will also be added automatically.
CMAKE_REQUIRED_INCLUDES
A ;-list of header search paths to pass to the compiler. These will be the only header search paths used--the contents of the
INCLUDE_DIRECTORIES
directory property will be ignored.
CMAKE_REQUIRED_LINK_OPTIONS
New in version 3.14.
A ;-list of options to add to the link command (see
try_compile()
for further details).
CMAKE_REQUIRED_LIBRARIES
A ;-list of libraries to add to the link command. These can be the name of system libraries or they can be Imported Targets (see
try_compile()
for further details).
CMAKE_REQUIRED_QUIET
New in version 3.1.
If this variable evaluates to a boolean true value, all status messages associated with the check will be suppressed.
See modules CheckIncludeFile
and CheckIncludeFileCXX
to check for a single header file in C
or CXX
languages.