libwebsockets/lib/libwebsockets.a: libwebsockets/CMakeCache.txt
cd libwebsockets && cmake --build .
mt_server.c: libwebsockets/lib/libwebsockets.a
libwebsockets/lib/libwebsockets.a: libwebsockets/CMakeCache.txt
cd libwebsockets && cmake --build .
mt_server.c: libwebsockets/lib/libwebsockets.a