--- a/lib/isc/Makefile.in	2019-12-24 12:56:55.519310287 +0100
+++ b/lib/isc/Makefile.in	2019-12-24 12:57:57.539313433 +0100
@@ -82,7 +82,7 @@
 		symtab.c task.c taskpool.c timer.c \
 		tm.c version.c
 
-LIBS =		${OPENSSL_LIBS} @LIBS@
+LIBS =		${ZLIB_LIBS} ${OPENSSL_LIBS} @LIBS@
 
 # Note: the order of SUBDIRS is important.
 # Attempt to disable parallel processing.