diff -up src/xorg-xdm/xdm/choose.c.orig src/xorg-xdm/xdm/choose.c
--- src/xorg-xdm/xdm/choose.c.orig	2014-03-27 00:13:25.000000000 -0600
+++ src/xorg-xdm/xdm/choose.c	2014-03-27 00:13:59.000000000 -0600
@@ -54,6 +54,11 @@ in this Software without prior written a
 # include <time.h>
 # define Time_t time_t
 
+# ifdef HAVE_SETPROCTITLE
+#  include <sys/types.h>
+#  include <bsd/unistd.h>
+# endif
+
 static int
 FormatBytes (
     unsigned char *data,
diff -up src/xorg-xdm/xdm/genauth.c.orig src/xorg-xdm/xdm/genauth.c
--- src/xorg-xdm/xdm/genauth.c.orig	2014-03-27 00:15:27.000000000 -0600
+++ src/xorg-xdm/xdm/genauth.c	2014-03-27 00:15:54.000000000 -0600
@@ -43,6 +43,10 @@ from The Open Group.
 #include <time.h>
 #define Time_t time_t
 
+#ifdef HAVE_ARC4RANDOM
+#include <bsd/stdlib.h>
+#endif
+
 #ifdef HASXDMAUTH
 static unsigned char	key[8];
 #endif
diff -up src/xorg-xdm/xdm/session.c.orig src/xorg-xdm/xdm/session.c
--- src/xorg-xdm/xdm/session.c.orig	2014-03-27 00:16:39.000000000 -0600
+++ src/xorg-xdm/xdm/session.c	2014-03-27 00:17:20.000000000 -0600
@@ -85,6 +85,11 @@ extern int key_setnet(struct key_netstar
 #include <systemd/sd-daemon.h>
 #endif
 
+#ifdef HAVE_SETPROCTITLE
+# include <sys/types.h>
+# include <bsd/unistd.h>
+#endif
+
 #ifdef USE_SELINUX
 /* This should be run just before we exec the user session. */
 static int