--- libpst-0.6.72/src/Makefile.am.orig	2018-08-01 17:15:48.000000000 +0200
+++ libpst-0.6.72/src/Makefile.am	2019-04-23 21:41:45.026697783 +0200
@@ -80,7 +80,7 @@
 endif
 
 libpst_la_SOURCES     = $(common_source) $(common_header)
-libpst_la_LIBADD      = $(LTLIBICONV)
+libpst_la_LIBADD      = $(LTLIBICONV) $(ZLIB_LIBS)
 
 EXTRA_DIST =
 if !NEED_XGETOPT