cmake LWS_HAVE_EVBACKEND_LINUXAIO examples

warmcat/libwebsockets lib/event-libs/libev/CMakeLists.txt :72 

CHECK_C_SOURCE_COMPILES(
	"#include <ev.h>
	 int main(int argc, char **argv) { return EVBACKEND_LINUXAIO; }
	" LWS_HAVE_EVBACKEND_LINUXAIO)

c-jimenez/open-ocpp 3rdparty/libwebsockets/lib/event-libs/libev/CMakeLists.txt :72 

CHECK_C_SOURCE_COMPILES(
	"#include <ev.h>
	 int main(int argc, char **argv) { return EVBACKEND_LINUXAIO; }
	" LWS_HAVE_EVBACKEND_LINUXAIO)

fluffos/fluffos src/thirdparty/libwebsockets/lib/event-libs/libev/CMakeLists.txt :72 

CHECK_C_SOURCE_COMPILES(
	"#include <ev.h>
	 int main(int argc, char **argv) { return EVBACKEND_LINUXAIO; }
	" LWS_HAVE_EVBACKEND_LINUXAIO)