--- /dev/null
+--- pinfo-0.6.13/src/parse_config.h.orig 2019-02-16 21:23:32.000000000 +0100
++++ pinfo-0.6.13/src/parse_config.h 2021-10-02 21:41:54.698502930 +0200
+@@ -85,7 +85,7 @@ typedef struct colours
+ colours;
+ #endif /* HAVE_CURSES_COLOR */
+
+-int use_manual;
++extern int use_manual;
+
+ int parse_config (void);
+ int parse_line (char *line);