cmake LWS_HAVE_LIBCAP examples

warmcat/libwebsockets CMakeLists.txt :757 

CHECK_LIBRARY_EXISTS(cap cap_set_flag "" LWS_HAVE_LIBCAP)

c-jimenez/open-ocpp 3rdparty/libwebsockets/CMakeLists.txt :664 

CHECK_LIBRARY_EXISTS(cap cap_set_flag "" LWS_HAVE_LIBCAP)

fluffos/fluffos src/thirdparty/libwebsockets/CMakeLists.txt :647 

CHECK_LIBRARY_EXISTS(cap cap_set_flag "" LWS_HAVE_LIBCAP)