--- configure.in	Tue Oct  9 20:54:28 2001
+++ configure.in.new	Mon Nov 26 22:08:38 2001
@@ -51,7 +51,7 @@
 CFLAGS="$CFLAGS -D_GNU_SOURCE"
 CXXFLAGS="$CXXFLAGS -D_GNU_SOURCE"
 
-AC_CHECK_HEADERS(termios.h pty.h)
+AC_CHECK_HEADERS(termios.h pty.h libutil.h sys/types.h sys/ioctl.h)
 AC_CHECK_LIB(util,openpty)
 AC_CHECK_FUNCS(getpt openpty unlockpt grantpt isastream)