--- configure.ac	2008-05-09 23:32:26.000000000 +0300
+++ configure.ac	2008-05-09 23:32:14.000000000 +0300
@@ -8,6 +8,7 @@
 AC_CANONICAL_TARGET([])
 AM_INIT_AUTOMAKE(libsamplerate,0.1.3)
 AM_CONFIG_HEADER(src/config.h)
+PKG_PROG_PKG_CONFIG
 
 #------------------------------------------------------------------------------------
 # Rules for library version information: