CheckStructHasMember¶
Check if the given struct or class has the specified member variable
- check_struct_has_member¶
- check_struct_has_member(<struct> <member> <headers> <variable> [LANGUAGE <language>]) - Check that the struct or class - <struct>has the specified- <member>after including the given header(s)- <headers>where the prototype should be declared. Specify the list of header files in one argument as a semicolon-separated list. The result is stored in an internal cache variable- <variable>.- The options are: - LANGUAGE <language>
- Use the - <language>compiler to perform the check. Acceptable values are- Cand- CXX. If not specified, it defaults to- C.
 
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>_FLAGSand 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
-DFOOor-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_DIRECTORIESdirectory property will be ignored.
CMAKE_REQUIRED_LINK_OPTIONS
Added 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_LINK_DIRECTORIES
Added in version 3.31.
A ;-list of libraries search paths to pass to the linker (see
try_compile()for further details).
CMAKE_REQUIRED_QUIET
Added in version 3.1.
If this variable evaluates to a boolean true value, all status messages associated with the check will be suppressed.
Example¶
include(CheckStructHasMember)
check_struct_has_member("struct timeval" tv_sec sys/select.h
                        HAVE_TIMEVAL_TV_SEC LANGUAGE C)
