Check if the given struct or class has the specified member variable
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 C and 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_FLAGSString 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_DEFINITIONSA ;-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_INCLUDESA ;-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_OPTIONSAdded in version 3.14.
A ;-list of options to add to the link command (see
try_compile()for further details).
CMAKE_REQUIRED_LIBRARIESA ;-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_DIRECTORIESAdded in version 3.31.
A ;-list of libraries search paths to pass to the linker (see
try_compile()for further details).
CMAKE_REQUIRED_QUIETAdded in version 3.1.
If this variable evaluates to a boolean true value, all status messages associated with the check will be suppressed.
include(CheckStructHasMember)
check_struct_has_member("struct timeval" tv_sec sys/select.h
HAVE_TIMEVAL_TV_SEC LANGUAGE C)