From 204ad074e51c0e9c25666eb044e4c255bcfe64b6 Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@mindrot.org>
Date: Thu, 2 Mar 2000 23:56:12 +1100
Subject:  - Warning was valid - possible race condition on PTYs. Avoided using
    platform-specific code.  - Document some common problems

---
 configure.in | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 1cb46525c..e5bdc445c 100644
--- a/configure.in
+++ b/configure.in
@@ -55,6 +55,7 @@ case "$host" in
 	;;
 *-*-linux*)
 	no_dev_ptmx=1
+	need_pty_removed_on_close=1
 	;;
 *-*-netbsd*)
 	need_dash_r=1
@@ -518,9 +519,27 @@ if test ! -z "$nolastlog" ; then
 fi
 
 if test -z "$no_dev_ptmx" ; then
-	AC_CHECK_FILE("/dev/ptmx", AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX))
+	AC_CHECK_FILE("/dev/ptmx", 
+		[
+			AC_DEFINE_UNQUOTED(HAVE_DEV_PTMX)
+			have_dev_ptmx=1
+		]
+	)
+fi
+AC_CHECK_FILE("/dev/ptc", 
+	[
+		AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC)
+		have_dev_ptc=1
+	]
+)
+
+# Some systems (defined in platform-specific code above) automagically remove
+# Unix98 ptys when they are closed
+if test "x$ac_cv_func_openpty" = "xyes" -o "x$have_dev_ptmx" = "x1" -o "x$have_dev_ptc" = "x1" ; then
+	if test "x$need_pty_removed_on_close" = "x1" ; then
+		AC_DEFINE(PTY_REMOVED_ON_CLOSE)
+	fi
 fi
-AC_CHECK_FILE("/dev/ptc", AC_DEFINE_UNQUOTED(HAVE_DEV_PTS_AND_PTC))
 
 # Options from here on. Some of these are preset by platform above
 
-- 
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