1 files changed, 68 insertions, 0 deletions
diff --git a/debian/patches/0008-reproducible_build.diff b/debian/patches/0008-reproducible_build.diff
new file mode 100644
index 0000000..94d8b58
--- /dev/null
+++ b/debian/patches/0008-reproducible_build.diff
@@ -0,0 +1,68 @@
+From: Debian DNS Packaging <pkg-dns-devel@lists.alioth.debian.org>
+Date: Fri, 24 Nov 2017 16:26:54 +0000
+Subject: _reproducible_build
+
+---
+ lib/dns/gen.c | 35 +++++++++++++++++++++++++++++++++--
+ 1 file changed, 33 insertions(+), 2 deletions(-)
+
+diff --git a/lib/dns/gen.c b/lib/dns/gen.c
+index 2a3b94b..b26a509 100644
+--- a/lib/dns/gen.c
++++ b/lib/dns/gen.c
+@@ -32,6 +32,8 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <time.h>
++#include <errno.h>
++#include <limits.h>
+ 
+ #ifdef WIN32
+ #include "gen-win32.h"
+@@ -528,6 +530,9 @@ main(int argc, char **argv) {
+ 	char *prefix = NULL;
+ 	char *suffix = NULL;
+ 	char *file = NULL;
++	char *source_date_epoch;
++	unsigned long long epoch;
++	char *endptr;
+ 	isc_dir_t dir;
+ 
+ 	for (i = 0; i < TYPENAMES; i++)
+@@ -618,8 +623,34 @@ main(int argc, char **argv) {
+ 	INSIST(n > 0 && (unsigned)n < sizeof(srcdir));
+ 	sd(0, "", buf, filetype);
+ 
+-	if (time(&now) != -1) {
+-		if ((tm = localtime(&now)) != NULL && tm->tm_year > 104) {
++	source_date_epoch = getenv("SOURCE_DATE_EPOCH");
++	if (source_date_epoch) {
++		errno = 0;
++		epoch = strtoull(source_date_epoch, &endptr, 10);
++		if ((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0))
++				|| (errno != 0 && epoch == 0)) {
++			fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: strtoull: %s\n", strerror(errno));
++			exit(EXIT_FAILURE);
++		}
++		if (endptr == source_date_epoch) {
++			fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: No digits were found: %s\n", endptr);
++			exit(EXIT_FAILURE);
++		}
++		if (*endptr != '\0') {
++			fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: Trailing garbage: %s\n", endptr);
++			exit(EXIT_FAILURE);
++		}
++		if (epoch > ULONG_MAX) {
++			fprintf(stderr, "Environment variable $SOURCE_DATE_EPOCH: value must be smaller than or equal to: %lu but was found to be: %llu \n", ULONG_MAX, epoch);
++			exit(EXIT_FAILURE);
++		}
++		now = epoch;
++	} else {
++		time(&now);
++	}
++
++	if (now != -1) {
++		if ((tm = gmtime(&now)) != NULL && tm->tm_year > 104) {
+ 			n = snprintf(year, sizeof(year), "-%d",
+ 				     tm->tm_year + 1900);
+ 			INSIST(n > 0 && (unsigned)n < sizeof(year));