From 44752d300771809abd96f65a88fd7885ac2b2123 Mon Sep 17 00:00:00 2001
From: Nick Bowler <nbowler@draconx.ca>
Date: Wed, 18 Mar 2009 23:22:05 -0400
Subject: [PATCH] Avoid use of test -z in PKG_CHECK_VAR.

---
 m4/pkgvar.m4 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/m4/pkgvar.m4 b/m4/pkgvar.m4
index 20a9a6a..b4e09ee 100644
--- a/m4/pkgvar.m4
+++ b/m4/pkgvar.m4
@@ -10,13 +10,13 @@ See the pkg-config man page for more details.])
 
 pkg_fail=no
 AC_MSG_CHECKING([for $3])
-if test -z "$[]m4_toupper([$1][_$2])"; then
+if test x"$[]m4_toupper([$1][_$2])" = x; then
 	_PKG_CONFIG([$1][_$2], [variable=$2], [$4])
 else
 	pkg_cv_$1[]_$2="$[]m4_toupper([$1][_$2])"
 fi
 
-if test -z "[$pkg_cv_$1][_$2]"; then
+if test x"[$pkg_cv_$1][_$2]" = x; then
 	if test $pkg_failed = yes; then
 		_PKG_SHORT_ERRORS_SUPPORTED
 		if test $_pkg_short_errors_supported = yes; then
-- 
2.43.0