AC_DEFUN([AI_CHECK_SOCKET],
    [
        AC_LANG_PUSH(C)
    
        findSocket()
        {
            AI_CHECK_SOCKET_save_LIBS="${LIBS}"
            LIBS=""
            AC_SEARCH_LIBS([gethostbyname], [nsl])
            AC_SEARCH_LIBS([socket], [socket],
                [
                    AI_SOCKET="yes"
                ],
                [
                    LIBS="-lnsl"
                    AC_SEARCH_LIBS([socket], [socket],
                        [
                            AI_SOCKET="yes"
                        ],
                        [
                            AI_SOCKET="no"
                        ])
                ])
            AI_SOCKET_LIBS="${LIBS}"
            LIBS="${AI_CHECK_SOCKET_save_LIBS}"
        }

        findSocket
        if test "x${AI_SOCKET}" = "xno" || test "x${AI_SOCKET_LIBS}" = "x-lc"
        then
            AI_SOCKET_LIBS=""
        fi
        AC_SUBST([AI_SOCKET_LIBS])
        
        AC_LANG_POP(C)
    ])