X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/blobdiff_plain/388b2f0063a017a5be26f72eae1424bad5b23f3c..130de411cc2c9177988e016d15dadfe7af09a00a:/latin.h

diff --git a/latin.h b/latin.h
index dbea6e4..4ec6954 100644
--- a/latin.h
+++ b/latin.h
@@ -8,7 +8,7 @@ typedef unsigned char digit;
 /* --- Solver structures, definitions --- */
 
 #ifdef STANDALONE_SOLVER
-int solver_show_working, solver_recurse_depth;
+extern int solver_show_working, solver_recurse_depth;
 #endif
 
 struct latin_solver {