diff -uNr odt2txt-0.5/Makefile odt2txt-0.5.mod/Makefile
--- odt2txt-0.5/Makefile	2014-11-18 19:10:08.000000000 +0200
+++ odt2txt-0.5.mod/Makefile	2019-08-13 21:39:23.220216345 +0300
@@ -14,7 +14,7 @@
 CFLAGS += -DNO_ICONV
 endif
 
-LIBS = -lz
+LIBS = -liconv -lz
 ZIP_OBJS =
 ifdef HAVE_LIBZIP
 	CFLAGS += -DHAVE_LIBZIP
