cmake LWS_HAVE_SYS_SOCKET_H examples

warmcat/libwebsockets CMakeLists.txt :677 

CHECK_C_SOURCE_COMPILES("#include <sys/socket.h>\nvoid main(void) { while(1) ; } void xxexit(void){}" LWS_HAVE_SYS_SOCKET_H)

c-jimenez/open-ocpp 3rdparty/libwebsockets/CMakeLists.txt :641 

CHECK_INCLUDE_FILE(sys/socket.h LWS_HAVE_SYS_SOCKET_H)

fluffos/fluffos src/thirdparty/libwebsockets/CMakeLists.txt :624 

CHECK_INCLUDE_FILE(sys/socket.h LWS_HAVE_SYS_SOCKET_H)