CheckIncludeFile¶
Provides a macro to check if a header file can be included in C
.
- CHECK_INCLUDE_FILE¶
CHECK_INCLUDE_FILE(<include> <variable> [<flags>])
Check if the given
<include>
file may be included in aC
source 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_FLAGS
below).
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 the CheckIncludeFiles
module to check for multiple headers
at once. See the CheckIncludeFileCXX
module to check for headers
using the CXX
language.