Hello! Qemu 0.15.0 doesn't build with vnc support disabled. The following patch fixes the problem.
Signed-off-by: Boris Dolgov <bo...@dolgov.name> -- --- monitor.c.orig 2011-09-14 18:11:12.235199764 +0400 +++ monitor.c 2011-09-14 18:12:19.187709823 +0400 @@ -1200,10 +1200,12 @@ static int add_graphics_client(Monitor * } qerror_report(QERR_ADD_CLIENT_FAILED); return -1; +#ifdef CONFIG_VNC } else if (strcmp(protocol, "vnc") == 0) { int fd = monitor_get_fd(mon, fdname); vnc_display_add_client(NULL, fd, skipauth); return 0; +#endif } else if ((s = qemu_chr_find(protocol)) != NULL) { int fd = monitor_get_fd(mon, fdname); if (qemu_chr_add_client(s, fd) < 0) {