From fd0f41321bd3ea777d47551cf6512d8ed1ba5aac Mon Sep 17 00:00:00 2001
From: Sami Kerola
Date: Sat, 26 Feb 2011 15:37:21 +0100
Subject: build-sys: print helpful error when pkg.m4 is missing

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---
 configure.ac | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 75ec3c0e8..9c3c5ac32 100644
--- a/configure.ac
+++ b/configure.ac
@@ -84,6 +84,12 @@ AC_C_BIGENDIAN
 dnl libtool-2
 LT_INIT
 
+m4_ifndef([PKG_PROG_PKG_CONFIG],
+  [m4_fatal([Could not locate the pkg-config autoconf
+    macros. These are usually located in /usr/share/aclocal/pkg.m4.
+    If your macros are in a different location, try setting the
+    environment variable AL_OPTS="-I/other/macro/dir" before running
+    ./autogen.sh or autoreconf again.])])
 PKG_PROG_PKG_CONFIG
 
 GTK_DOC_CHECK([1.10])
-- 
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