diff --git a/src/rev.cpp.in b/src/rev.cpp.in
--- a/src/rev.cpp.in
+++ b/src/rev.cpp.in
@@ -38,7 +38,15 @@ bool IsReleasedVersion()
 const char _openttd_revision[] = "${REV_VERSION}";
 
 /**
- * The text version of OpenTTD's build date.
+ * The text version of OpenTTD's build date in short format (without the time).
+ * Updating the build date in this file is the safest as it generally gets
+ * updated for each revision in contrary to most other files that only see
+ * updates when they are actually changed themselves.
+ */
+const char _openttd_build_date_short[] = __DATE__;
+
+/**
+ * The text version of OpenTTD's build date and time.
  * Updating the build date in this file is the safest as it generally gets
  * updated for each revision in contrary to most other files that only see
  * updates when they are actually changed themselves.
@@ -62,6 +70,8 @@ const char _openttd_revision_year[] = "$
  * Value 0 means no modification, 1 is for unknown state
  * (compiling from sources without any version control software)
  * and 2 is for modified revision.
+ *
+ * Ginever patchpack uses value 3 for hg unmodified and 4 for hg modified
  */
 const byte _openttd_revision_modified = ${REV_MODIFIED};