From 2e0e3d22ec80c3aab2794ecababdc3095410246d Mon Sep 17 00:00:00 2001
From: Roland McGrath <roland@redhat.com>
Date: Fri, 25 Jun 1993 20:03:51 +0000
Subject: [PATCH] Formerly vpath.c.~12~

---
 vpath.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/vpath.c b/vpath.c
index db53168d..ab1d0398 100644
--- a/vpath.c
+++ b/vpath.c
@@ -66,7 +66,17 @@ build_vpath_lists ()
   /* If there is a VPATH variable with a nonnull value, construct the
      general VPATH list from it.  We use variable_expand rather than just
      calling lookup_variable so that it will be recursively expanded.  */
-  p = variable_expand ("$(VPATH)");
+
+  {
+    /* Turn off --warn-undefined-variables while we expand SHELL and IFS.  */
+    int save = warn_undefined_variables_flag;
+    warn_undefined_variables_flag = 0;
+
+    p = variable_expand ("$(VPATH)");
+
+    warn_undefined_variables_flag = save;
+  }
+
   if (*p != '\0')
     {
       construct_vpath_list ("%", p);