From: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
Date: Fri, 12 Jun 2009 11:38:57 +0000 (+0200)
Subject: Fix concurrent autom4te.cache directory creation race.
X-Git-Tag: v2.64~43
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cafdba3139a2f7dfa706b35d9c8f35298896d1b2;p=thirdparty%2Fautoconf.git

Fix concurrent autom4te.cache directory creation race.

* bin/autom4te.in: Do not error out if another `autom4te'
instance created the cache directory before we could.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
---

diff --git a/ChangeLog b/ChangeLog
index f474f701e..dd5a354dc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-06-12  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
+
+	Fix concurrent autom4te.cache directory creation race.
+	* bin/autom4te.in: Do not error out if another `autom4te'
+	instance created the cache directory before we could.
+
 2009-06-11  Steven G. Johnson  <stevenj@alum.mit.edu>
 	and Eric Blake  <ebb9@byu.net>
 
diff --git a/bin/autom4te.in b/bin/autom4te.in
index 471b1656c..cf425bb43 100644
--- a/bin/autom4te.in
+++ b/bin/autom4te.in
@@ -972,10 +972,11 @@ if ($freeze)
     exit $exit_code;
   }
 
-# We need our cache directory.
+# We need our cache directory.  Don't fail with parallel creation.
 if (! -d "$cache")
   {
     mkdir "$cache", 0755
+      or -d "$cache"
       or fatal "cannot create $cache: $!";
   }