From d86542e56eb74de001193cba5f4fb059bb294f6a Mon Sep 17 00:00:00 2001
From: Mike Massonnet <mmassonnet@gmail.com>
Date: Tue, 22 Dec 2009 14:11:24 +0100
Subject: [PATCH] Check if $1 is not empty before calling cat

---
 scripts/xdt-autogen.in.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/scripts/xdt-autogen.in.in b/scripts/xdt-autogen.in.in
index 2d14ef8..bfd818f 100644
--- a/scripts/xdt-autogen.in.in
+++ b/scripts/xdt-autogen.in.in
@@ -70,7 +70,7 @@ fi
 ##
 parse_configure_subdirs()
 {
-  cat "$1" | tr '\\n\\t\\\\' '   ' | sed -ne 's|.*AC_CONFIG_SUBDIRS(\[\{0,1\}\([[:alnum:]_ @/-]\{1,\}\).*|\1|p'
+  test ! -z "$1" && cat "$1" | tr '\\n\\t\\\\' '   ' | sed -ne 's|.*AC_CONFIG_SUBDIRS(\[\{0,1\}\([[:alnum:]_ @/-]\{1,\}\).*|\1|p'
 }
 
 ##
-- 
1.6.5.6