diff -u -r -N ../tmux-1.8/compat/forkpty-linux.c ./compat/forkpty-linux.c
--- ../tmux-1.8/compat/forkpty-linux.c	1970-01-01 01:00:00.000000000 +0100
+++ ./compat/forkpty-linux.c	2014-01-08 12:44:00.885192436 +0100
@@ -0,0 +1,63 @@
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <termios.h>
+#include <unistd.h>
+
+int login_tty(int fd)
+{
+	setsid();
+	if (ioctl(fd, TIOCSCTTY, NULL) == -1) return -1;
+	dup2(fd, 0);
+	dup2(fd, 1);
+	dup2(fd, 2);
+	if (fd > 2) close(fd);
+	return 0;
+}
+
+int openpty(int *amaster, int *aslave, char *name, struct termios *termp, struct winsize *winp)
+{
+	char buf[512];
+	int master, slave;
+
+	master = open("/dev/ptmx", O_RDWR);
+	if (master == -1) return -1;
+	if (grantpt(master) || unlockpt(master) || ptsname_r(master, buf, sizeof buf)) goto fail;
+
+	slave = open(buf, O_RDWR | O_NOCTTY);
+	if (slave == -1) goto fail;
+
+	/* XXX Should we ignore errors here?  */
+	if (termp) tcsetattr(slave, TCSAFLUSH, termp);
+	if (winp) ioctl(slave, TIOCSWINSZ, winp);
+
+	*amaster = master;
+	*aslave = slave;
+	if (name != NULL) strcpy(name, buf);
+	return 0;
+
+fail:
+	close(master);
+	return -1;
+}
+
+
+int forkpty(int *amaster, char *name, struct termios *termp, struct winsize *winp)
+{
+	int master, slave, pid;
+	if (openpty(&master, &slave, name, termp, winp) == -1) return -1;
+	switch (pid = fork()) {
+		case -1:
+			return -1;
+		case 0:
+			close(master);
+			if (login_tty (slave)) _exit (1);
+			return 0;
+		default:
+			*amaster = master;
+			close (slave);
+			return pid;
+	}
+}
diff -u -r -N ../tmux-1.8/compat/imsg-buffer.c ./compat/imsg-buffer.c
--- ../tmux-1.8/compat/imsg-buffer.c	2013-02-10 17:20:15.000000000 +0100
+++ ./compat/imsg-buffer.c	2014-01-08 12:33:53.721206934 +0100
@@ -28,6 +28,10 @@
 
 #include "tmux.h"
 
+#ifndef IOV_MAX
+# define IOV_MAX 1024
+#endif
+
 int	ibuf_realloc(struct ibuf *, size_t);
 void	ibuf_enqueue(struct msgbuf *, struct ibuf *);
 void	ibuf_dequeue(struct msgbuf *, struct ibuf *);