X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/6545de78cb822ab5db97a2f16fe7a42cc9488bd8..a5ffa9b475a426bc73366db01f7cc92a3811bc3a:/src/src/version.c

diff --git a/src/src/version.c b/src/src/version.c
index ef994a893..f27cc3cde 100644
--- a/src/src/version.c
+++ b/src/src/version.c
@@ -1,5 +1,3 @@
-/* $Cambridge: exim/src/src/version.c,v 1.29 2010/01/04 19:35:50 nm4 Exp $ */
-
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
@@ -42,6 +40,16 @@ version_cnumber_format = US"%d\0<<eximcnumber>>";
 sprintf(CS version_cnumber, CS version_cnumber_format, cnumber);
 version_string = US EXIM_VERSION_STR "\0<<eximversion>>";
 
+#ifdef EXIM_BUILD_DATE_OVERRIDE
+/* Reproducible build support; build tooling should have given us something looking like
+ * "25-Feb-2017 20:15:40" in EXIM_BUILD_DATE_OVERRIDE based on $SOURCE_DATE_EPOCH in environ
+ * per <https://reproducible-builds.org/specs/source-date-epoch/>
+ */
+version_date = date_buffer;
+version_date[0] = 0;
+Ustrncat(version_date, EXIM_BUILD_DATE_OVERRIDE, sizeof(date_buffer));
+
+#else
 Ustrcpy(today, __DATE__);
 if (today[4] == ' ') today[4] = '0';
 today[3] = today[6] = '-';
@@ -53,6 +61,7 @@ Ustrncat(version_date, today, 4);
 Ustrncat(version_date, today+7, 4);
 Ustrcat(version_date, " ");
 Ustrcat(version_date, __TIME__);
+#endif
 }
 
 /* End of version.c */