Make exim_monitor build reproducible.

Adapt changes to exim for SOURCE_DATE_EPOCH from exim
6e411084a29a7658f7bc88aa5a62ab9016c22c79 to exim_monitor.

diff --git a/src/exim_monitor/em_version.c b/src/exim_monitor/em_version.c
index a2edbfe8ac011aa2485339bf74cd3016f370302d..8228f946791b4eb17b953471915350594c2e7c7b 100644 (file)
--- a/src/exim_monitor/em_version.c
+++ b/src/exim_monitor/em_version.c
@@ -10,6 +10,8 @@
 #include <string.h>
 #include <stdlib.h>
 
+#include "version.h"
+
 extern uschar *version_string;
 extern uschar *version_date;
 
@@ -21,6 +23,16 @@ uschar today[20];
 
 version_string = US"2.06";
 
+#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 = US malloc(32);
+version_date[0] = 0;
+Ustrncat(version_date, EXIM_BUILD_DATE_OVERRIDE, 31);
+
+#else
 Ustrcpy(today, __DATE__);
 if (today[4] == ' ') i = 1;
 today[3] = today[6] = '-';
@@ -32,6 +44,7 @@ Ustrncat(version_date, today, 4);
 Ustrncat(version_date, today+7, 4);
 Ustrcat(version_date, " ");
 Ustrcat(version_date, __TIME__);
+#endif
 }
 
 /* End of em_version.c */