-lwinmm is needed for -mno-cygwin and cddax vcdx. I believe this is

 the right way to add. Someone understanding configure.ac (and cygwin)
 should doublecheck.

configure.ac

@@ -146,6 +146,7 @@ case "${target_os}" in
         # add ws2_32 for closesocket, select, recv
         CPPFLAGS_save="${CPPFLAGS_save} -D_OFF_T_ -D_off_t=long"; CPPFLAGS="${CPPFLAGS_save}"
         AX_ADD_LDFLAGS([vlc],[-lws2_32 -lnetapi32 -lwinmm -mwindows])
+        AX_ADD_LDFLAGS([vcdx cddax],[-lwinmm])
         AX_ADD_LDFLAGS([ipv4 ipv6 access_http access_mms access_udp access_tcp access_ftp access_output_udp sap slp http stream_out_standard telnet],[-lws2_32])
     fi
     ;;