cmake HAVE_WS2_32 examples

zeromq/zeromq4-x CMakeLists.txt :49 

check_library_exists(ws2_32 fopen "" HAVE_WS2_32)

zeromq/libzmq CMakeLists.txt :570 

check_cxx_symbol_exists(WSAStartup "winsock2.h" HAVE_WS2_32)

zeromq/zeromq4-1 CMakeLists.txt :145 

check_library_exists(ws2_32 WSAGetLastError "" HAVE_WS2_32)

asset-group/5ghoul-5g-nr-attacks libs/libzmq/CMakeLists.txt :526 

check_cxx_symbol_exists(WSAStartup "winsock2.h" HAVE_WS2_32)