> x11/fast-user-switch-applet 1 jmmv@NetBSD.org
gdm-queue.c: In function `gdm_send_command':
gdm-queue.c:412: warning: implicit declaration of function `signal'
gdm-queue.c:412: error: `SIGPIPE' undeclared (first use in this function)
gdm-queue.c:412: error: (Each undeclared identifier is reported only once
gdm-queue.c:412: error: for each function it appears in.)
gdm-queue.c:412: error: `SIG_IGN' undeclared (first use in this function)
gdm-queue.c:412: warning: assignment makes pointer from integer without a cast