$NetBSD: patch-ac,v 1.1 2009/09/06 15:40:49 asau Exp $

--- configure.in.orig	2006-12-17 13:57:31.000000000 +0300
+++ configure.in	2009-09-06 19:35:24.000000000 +0400
@@ -52,6 +52,7 @@
 AC_ENABLE_SHARED(yes)
 AC_ENABLE_STATIC(no)
 KDE_PROG_LIBTOOL
+PKG_PROG_PKG_CONFIG
 
 dnl for NLS support. Call them in this order!
 dnl WITH_NLS is for the po files
@@ -69,15 +70,20 @@
 AC_C_BIGENDIAN
 AC_CHECK_KDEMAXPATHLEN
 
-AC_CHECK_LIB(pthread, pthread_create, [LIBS="$LIBS -lpthread"])
+AC_CHECK_LIB(pthread, pthread_create, [LIBS="${PTHREAD_LDFLAGS} ${PTHREAD_LIBS}  $LIBS"])
 
 AC_LANG([C++])
 
-AC_PATH_CLN(1.1.0, [
-     	LIBS="$LIBS $CLN_LIBS"
-     	CPPFLAGS="$CPPFLAGS $CLN_CPPFLAGS"
+if pkg-config --atleast-version=1.1.0 cln; then
+   CLN_CPPFLAGS="`pkg-config --cflags cln`"
+   CLN_LIBS="`pkg-config --libs cln`"
+   	LIBS="$LIBS `pkg-config --libs cln`"
+     	CPPFLAGS="$CPPFLAGS `pkg-config --cflags cln`"
   	AC_DEFINE(HAVE_LIBCLN,1,[If CLN can be used])
-], AC_MSG_ERROR([No suitable installed version of CLN could be found.]))
+else AC_MSG_ERROR([No suitable installed version of CLN could be found.])
+fi
+AC_SUBST(CLN_CPPFLAGS)
+AC_SUBST(CLN_LIBS)
 
 PKG_CHECK_MODULES(QALCULATE, [
 	libxml-2.0