diff -up cdrkit-1.1.11/genisoimage/genisoimage.h.me cdrkit-1.1.11/genisoimage/genisoimage.h
--- cdrkit-1.1.11/genisoimage/genisoimage.h.me 2020-02-24 15:10:35.542998992 +0100
+++ cdrkit-1.1.11/genisoimage/genisoimage.h 2020-02-24 15:10:50.011130450 +0100
@@ -377,7 +377,7 @@ extern int use_fileversion;
extern int split_SL_component;
extern int split_SL_field;
extern char *trans_tbl;
-char *outfile;
+extern char *outfile;
#define JMAX 64 /* maximum Joliet file name length (spec) */
#define JLONGMAX 103 /* out of spec Joliet file name length */