diff --git a/configure.ac b/configure.ac
index ad0eedc..a0bd057 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-# $Id: configure.ac,v 1.151 2003/09/12 05:19:31 tim Exp $
+# $Id: configure.ac,v 1.152 2003/09/12 05:24:36 tim Exp $
 
 AC_INIT
 AC_CONFIG_SRCDIR([ssh.c])
@@ -294,11 +294,17 @@
 	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
 	AC_DEFINE(USE_PIPES)
+	AC_DEFINE(SETEUID_BREAKS_SETUID)
+	AC_DEFINE(BROKEN_SETREUID)
+	AC_DEFINE(BROKEN_SETREGID)
 	;;
 *-*-sysv5*)
 	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
 	LDFLAGS="$LDFLAGS -L/usr/local/lib"
 	AC_DEFINE(USE_PIPES)
+	AC_DEFINE(SETEUID_BREAKS_SETUID)
+	AC_DEFINE(BROKEN_SETREUID)
+	AC_DEFINE(BROKEN_SETREGID)
 	;;
 *-*-sysv*)
 	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
@@ -331,6 +337,9 @@
 	AC_DEFINE(HAVE_SECUREWARE)
 	AC_DEFINE(DISABLE_SHADOW)
 	AC_DEFINE(DISABLE_FD_PASSING)
+	AC_DEFINE(SETEUID_BREAKS_SETUID)
+	AC_DEFINE(BROKEN_SETREUID)
+	AC_DEFINE(BROKEN_SETREGID)
 	AC_CHECK_FUNCS(getluid setluid)
 	MANTYPE=man
 	;;