1 files changed, 16 insertions, 0 deletions
diff --git a/version.c b/version.c
new file mode 100644
index 0000000..a44fbf6
--- /dev/null
+++ b/version.c
@@ -0,0 +1,16 @@
+/*
+ * Puzzles version numbering.
+ */
+
+#define STR1(x) #x
+#define STR(x) STR1(x)
+
+#if defined REVISION
+
+char ver[] = "Revision: r" STR(REVISION);
+
+#else
+
+char ver[] = "Unidentified build, " __DATE__ " " __TIME__;
+
+#endif