Pad leading zero to month and day in `MRUBY_RELEASE_DATE`
For Ruby compatibility.
@@ -77,7 +77,21 @@ MRB_BEGIN_DECL
/*
* Release date as a string.
*/
-#define MRUBY_RELEASE_DATE MRB_STRINGIZE(MRUBY_RELEASE_YEAR) "-" MRB_STRINGIZE(MRUBY_RELEASE_MONTH) "-" MRB_STRINGIZE(MRUBY_RELEASE_DAY)
+#define MRUBY_RELEASE_DATE \
+ MRUBY_RELEASE_YEAR_STR "-" \
+ MRUBY_RELEASE_MONTH_STR "-" \
+ MRUBY_RELEASE_DAY_STR
+#define MRUBY_RELEASE_YEAR_STR MRB_STRINGIZE(MRUBY_RELEASE_YEAR)
+#if MRUBY_RELEASE_MONTH < 10
+#define MRUBY_RELEASE_MONTH_STR "0" MRB_STRINGIZE(MRUBY_RELEASE_MONTH)
+#else
+#define MRUBY_RELEASE_MONTH_STR MRB_STRINGIZE(MRUBY_RELEASE_MONTH)
+#endif
+#if MRUBY_RELEASE_DAY < 10
+#define MRUBY_RELEASE_DAY_STR "0" MRB_STRINGIZE(MRUBY_RELEASE_DAY)
+#else
+#define MRUBY_RELEASE_DAY_STR MRB_STRINGIZE(MRUBY_RELEASE_DAY)
+#endif
/*
* The year mruby was first created.
