From 495b79d8e9a44ad0ada965add3a046120646e7e0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Stefan=20Br=C3=83=C2=BCns?= Date: Thu, 12 Jan 2017 18:04:57 +0100 Subject: [PATCH 1/2] mkromfs: make build reproducible, use buildtime from SOURCE_DATE_EPOCH MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The environment variable SOURCE_DATE_EPOCH is the common approach for getting reproducible timestamps and thus builds. In case the variable is not set, keep using the current time of the mkromfs run. Signed-off-by: Stefan Brüns --- base/mkromfs.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/base/mkromfs.c b/base/mkromfs.c index b7bc6bf..9b81c46 100644 --- a/base/mkromfs.c +++ b/base/mkromfs.c @@ -2280,6 +2280,8 @@ main(int argc, char *argv[]) int compaction = 0; Xlist_element *Xlist_scan = NULL, *Xlist_head = NULL; char pa[PATH_STR_LEN]; + time_t buildtime = 0; + char* env_source_date_epoch; memset(pa, 0x00, PATH_STR_LEN); @@ -2336,7 +2338,13 @@ main(int argc, char *argv[]) #endif fprintf(out,"\n#include \"stdint_.h\"\n"); fprintf(out,"\n#include \"time_.h\"\n\n"); - fprintf(out," time_t gs_romfs_buildtime = %ld;\n\n", time(NULL)); + + if ((env_source_date_epoch = getenv("SOURCE_DATE_EPOCH"))) { + buildtime = strtoul(env_source_date_epoch, NULL, 10); + } + if (!buildtime) + buildtime = time(NULL); + fprintf(out," time_t gs_romfs_buildtime = %ld;\n\n", buildtime); /* process the remaining arguments (options interspersed with paths) */ for (; atarg < argc; atarg++) { -- 2.11.0