From 17f5c32a1915194a2adb15cbbb76c7e2a0d75722 Mon Sep 17 00:00:00 2001
From: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: Sat, 4 May 2013 11:34:24 +0200
Subject: [PATCH] acinclude: fix for pkg-config 0.28 behaviour

Old pkg-config always retured a non-empty string for --cflags.
It always contained at least one bogus space. New pkg-config
does not do that. Do not rely on --cflags being non-empty.
---
 acinclude.m4 | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 0259d90..b64b2a7 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -225,6 +225,7 @@ if $PKG_CONFIG --exists "$2" ; then
 	AC_MSG_RESULT(yes)
 	$1_CFLAGS=$($PKG_CONFIG --cflags "$2")
 	$1_LIBS=$($PKG_CONFIG --libs "$2")
+	$1_EXISTS=yes
 else
 	AC_MSG_RESULT(no)
 fi
@@ -235,7 +236,7 @@ AC_SUBST($1_LIBS)
 
 AC_DEFUN([TUXBOX_APPS_LIB_PKGCONFIG],[
 _TUXBOX_APPS_LIB_PKGCONFIG($1,$2)
-if test -z "$$1_CFLAGS" ; then
+if test x"$$1_EXISTS" != xyes; then
 	AC_MSG_ERROR([could not find package $2]);
 fi
 ])