--- poldek-0.42.0/Makefile.am.orig	2020-03-13 21:18:10.790060106 +0100
+++ poldek-0.42.0/Makefile.am	2020-03-14 14:15:41.899317877 +0100
@@ -135,7 +135,7 @@
 poldek.pc:
 	@ ( echo 'prefix=$(prefix)'; \
 		echo 'exec_prefix=$${exec_prefix}'; \
-		echo 'libdir=$${exec_prefix}/lib'; \
+		echo 'libdir=$(libdir)'; \
 		echo 'includedir=$${includedir}'; \
 		echo ''; \
 		echo 'Name: poldek'; \