Description: Fix ftbfs with GCC-10

Author: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Bug-Debian: https://bugs.debian.org/957102
Forwarded: https://github.com/comotion/cpm/pull/64

---

--- cpm-0.32.orig/configuration.c
+++ cpm-0.32/configuration.c
@@ -33,6 +33,8 @@
 #include "listhandler.h"
 #include "memory.h"
 
+cpmconfig_t*	config;
+cpmruntime_t*	runtime;
 
 /* #############################################################################
  *
--- cpm-0.32.orig/configuration.h
+++ cpm-0.32/configuration.h
@@ -100,8 +100,8 @@ typedef struct
 /* #############################################################################
  * global variables
  */
-cpmconfig_t*            config;
-cpmruntime_t*           runtime;
+extern cpmconfig_t*            config;
+extern cpmruntime_t*           runtime;
 
 #define CRACKLIB_OFF    0
 #define CRACKLIB_ON     1