--- src/Makevars.orig	2019-09-15 09:14:58.833433857 +0200
+++ src/Makevars	2019-09-15 09:15:09.469235085 +0200
@@ -8,4 +8,4 @@
 
 PKG_CFLAGS = -Ireadstat -DHAVE_ZLIB
 PKG_CXXFLAGS = -Ireadstat -DHAVE_ZLIB
-PKG_LIBS = -lz
+PKG_LIBS = -lz -liconv