Index: mediastreamer2/configure.ac
===================================================================
--- mediastreamer2/configure.ac	(revision 64)
+++ mediastreamer2/configure.ac	(working copy)
@@ -188,6 +188,8 @@
 
 arts_enabled=false
 
+PKG_PROG_PKG_CONFIG()
+
 if test "$artsc" = "true" ; then
 
 	dnl check for arts (kde sound daemon) support