From 7bf5c4827f3d7edc7e139915690ce3a495410a07 Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Tue, 9 Feb 2010 06:22:59 -0700
Subject: [PATCH] Avoid $U if it is not initialized.
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* lib/autoconf/general.m4 (_AC_LIBOBJS_NORMALIZE): Ensure $U is
set if automake did not define it.
* THANKS: Update.
Reported by Julien Élie.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog               |    8 ++++++++
 lib/autoconf/general.m4 |    2 ++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 43a7101..c1b74f8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2010-02-09  Eric Blake  <address@hidden>
+
+	Avoid $U if it is not initialized.
+	* lib/autoconf/general.m4 (_AC_LIBOBJS_NORMALIZE): Ensure $U is
+	set if automake did not define it.
+	* THANKS: Update.
+	Reported by Julien Élie.
+
 2009-09-16  Eric Blake  <address@hidden>

 	Optimize AC_REPLACE_FUNCS.
diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index 28fd972..15640c8 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -2919,6 +2919,8 @@ AC_DEFUN([AC_LIBOBJ],
 AC_DEFUN([_AC_LIBOBJS_NORMALIZE],
 [ac_libobjs=
 ac_ltlibobjs=
+m4_ifndef([AM_C_PROTOTYPES], [U=
+])dnl
 for ac_i in : $LIB@&address@hidden; do test "x$ac_i" = x: && continue
   # 1. Remove the extension, and $U if already installed.
   ac_script='s/\$U\././;s/\.o$//;s/\.obj$//'
-- 
1.6.6.1