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--- a/io.h
+++ b/io.h
@@ -9,5 +9,6 @@
 int     edup            (int oldfd);
 int     edup2           (int oldfd, int newfd);
 FILE*   efdopen         (int fd, const char *mode);
+void    set_progname    (const char *name);
 
 #endif
--- a/ttyrec.c
+++ b/ttyrec.c
@@ -42,13 +42,19 @@
 /*
  * script
  */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <termios.h>
 #include <sys/ioctl.h>
 #include <sys/time.h>
 #include <sys/file.h>
-#include <sys/signal.h>
+#include <sys/wait.h>
+#include <signal.h>
 #include <stdio.h>
 #include <time.h>
 #include <unistd.h>
@@ -57,7 +63,9 @@
 
 #if defined(SVR4)
 #include <fcntl.h>
+#if !(defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) || defined(__linux__))
 #include <stropts.h>
+#endif
 #endif /* SVR4 */
 
 #include <sys/time.h>
@@ -341,7 +349,7 @@
 	rtt = tt;
 #if defined(SVR4)
 	rtt.c_iflag = 0;
-	rtt.c_lflag &= ~(ISIG|ICANON|XCASE|ECHO|ECHOE|ECHOK|ECHONL);
+	rtt.c_lflag &= ~(ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHONL);
 	rtt.c_oflag = OPOST;
 	rtt.c_cc[VINTR] = CDEL;
 	rtt.c_cc[VQUIT] = CDEL;
@@ -449,6 +457,7 @@
 		perror("open(fd, O_RDWR)");
 		fail();
 	}
+#ifndef __linux__
 	if (isastream(slave)) {
 		if (ioctl(slave, I_PUSH, "ptem") < 0) {
 			perror("ioctl(fd, I_PUSH, ptem)");
@@ -466,6 +475,7 @@
 #endif
 		(void) ioctl(0, TIOCGWINSZ, (char *)&win);
 	}
+#endif
 #else /* !SVR4 */
 #ifndef HAVE_openpty
 	line[strlen("/dev/")] = 't';