--- a/bk_paper.c	
+++ a/bk_paper.c	
@@ -75,6 +75,8 @@ 
 #include "halibut.h"
 #include "paper.h"
 
+font_info *all_fonts;
+
 typedef struct paper_conf_Tag paper_conf;
 typedef struct paper_idx_Tag paper_idx;
 
--- a/paper.h	
+++ a/paper.h	
@@ -78,7 +78,7 @@ struct ligature_Tag {
  * metrics are read in.
  */
 
-font_info *all_fonts;
+extern font_info *all_fonts;
 
 struct font_info_Tag {
     font_info *next;