cmake HAVE_LIBWS2_32 examples

lagadic/visp cmake/FindWS2_32.cmake :42 

check_library_exists(${WS2_32_LIBNAME} getch "" HAVE_LIBWS2_32)

lagadic/visp cmake/FindWS2_32.cmake :47 

find_library(HAVE_LIBWS2_32 ${WS2_32_LIBNAME}
        "$ENV{MINGW_DIR}/lib"
        "$ENV{MINGW_DIR}/mingw/lib"
        C:/mingw/mingw/lib)

lagadic/visp cmake/FindWS2_32.cmake :65 

check_library_exists(${WS2_32_LIBNAME} getch "" HAVE_LIBWS2_32)

lagadic/visp cmake/FindWS2_32.cmake :74 

mark_as_advanced(HAVE_LIBWS2_32)