Seed PKG_CONFIG_PATH with the default libshout shout.pc location

(ported from ices0 version)

svn path=/trunk/m4/; revision=5016

m4/shout.m4

@@ -3,7 +3,7 @@ dnl Jack Moffitt <jack@icecast.org> 08-06-2001
 dnl Rewritten for libshout 2
 dnl Brendan Cully <brendan@xiph.org> 20030612
 dnl 
-dnl $Id: shout.m4,v 1.8 2003/06/25 17:03:55 brendan Exp $
+dnl $Id: shout.m4,v 1.9 2003/06/26 19:34:00 brendan Exp $
 
 # XIPH_PATH_SHOUT([ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
 # Test for libshout, and define SHOUT_CFLAGS and SHOUT_LIBS
@@ -16,6 +16,9 @@ SHOUT_LIBS=""
 # NB: PKG_CHECK_MODULES exits if pkg-config is unavailable on the targe
 # system, so we can't use it.
 
+# seed pkg-config with the default libshout location
+PKG_CONFIG_PATH=${PKG_CONFIG_PATH:-/usr/local/lib/pkgconfig}
+
 # Step 1: Use pkg-config if available
 AC_PATH_PROG([PKGCONFIG], [pkg-config], [no])
 if test "$PKGCONFIG" != "no" && `$PKGCONFIG --exists shout`