busybox/scripts
Paul Spooren 947a22b332 build system: use SOURCE_DATE_EPOCH for timestamp if available
The SOURCE_DATE_EPOCH is an effort of the Reproducible Builds
organization to make timestamps/build dates in compiled tools
deterministic over several repetitive builds.

Busybox shows by default the build date timestamp which changes whenever
compiled. To have a reasonable accurate build date while staying
reproducible, it's possible to use the *date of last source
modification* rather than the current time and date.

Further information on SOURCE_DATE_EPOCH are available online [1].

This patch modifies `confdata.c` so that the content of the
SOURCE_DATE_EPOCH env variable is used as timestamp.

To be independent of different timezones between builds, whenever
SOURCE_DATE_EPOCH is defined the GMT time is used.

[1]: https://reproducible-builds.org/docs/source-date-epoch/

Signed-off-by: Paul Spooren <mail@aparcar.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2021-06-05 18:13:00 +02:00
..
basic fix "warning array subscript has type 'char'" 2021-04-14 19:12:43 +02:00
kconfig build system: use SOURCE_DATE_EPOCH for timestamp if available 2021-06-05 18:13:00 +02:00
bb_release tar: add TODO about a bug with non-writable directories on extract 2021-01-01 13:34:25 +01:00
bloat-o-meter bloat-o-meter: avoid double counting 2021-03-09 17:25:07 +01:00
checkhelp.awk
checkstack.pl checkstack.pl: tweak bfin re 2019-01-18 09:56:19 +01:00
cleanup_printf2puts typo fix 2010-11-06 22:17:30 +01:00
echo.c scripts/echo.c: resolve implicit declaration of function 'dup2' 2019-03-05 16:57:04 +01:00
embedded_scripts hush: allow hush to run embedded scripts 2018-11-27 16:13:07 +01:00
find_bad_common_bufsiz
find_stray_common_vars
find_stray_empty_lines find_stray_empty_lines: make it work 2010-07-28 21:29:19 +02:00
fix_ws.sh
gcc-version.sh gcc-version.sh: fix for "invalid number" message during Android NDK builds 2021-04-22 09:21:39 +02:00
gen_build_files.sh gen_build_files: Use C locale when calling sed on globbed files 2021-06-05 17:36:19 +02:00
generate_BUFSIZ.sh build system: make CONFIG_FEATURE_USE_BSS_TAIL less funky 2016-06-29 15:00:52 +02:00
Kbuild.include build system: remove KBUILD_STR() 2020-04-29 14:52:19 +02:00
Kbuild.src mass renaming Kbuild -> Kbuild.src, Config.in -> Config.src 2010-06-04 20:10:51 +02:00
Makefile.build build system: specify '-nostldlib' when linking to .o files 2014-04-02 12:12:46 +02:00
Makefile.clean
Makefile.host *: trailing empty lines removed 2010-07-26 01:49:12 +02:00
Makefile.IMA build system: remove KBUILD_STR() 2020-04-29 14:52:19 +02:00
Makefile.lib build system: remove KBUILD_STR() 2020-04-29 14:52:19 +02:00
memusage
mkconfigs build system: use od -b instead of od -t x1 2013-11-26 14:56:29 +01:00
mkdiff_obj scripts/mkdiff_obj: show "size OBJFILE" too 2010-10-29 19:06:20 +02:00
mkdiff_obj_bloat
mkmakefile mkmakefile: make 3.82 fix 2010-10-19 12:49:51 +02:00
objsizes
randomtest randomconfig fixes 2020-06-24 00:27:37 +02:00
randomtest.loop randomconfig fixes 2017-12-31 17:30:02 +01:00
sample_pmap
showasm *: make GNU licensing statement forms more regular 2010-08-16 20:14:46 +02:00
test_make_clean remove defconfig. Now "make defconfig" simply uses defaults from Config.in 2010-06-06 04:14:28 +02:00
test_make_O fix make O=dir build 2010-07-09 01:25:36 +02:00
test_setenv_leak.c crond: do not assume setenv() does not leak 2017-07-22 02:25:47 +02:00
trylink trylink: do not drop libs from CONFIG_EXTRA_LDLIBS 2021-02-23 23:09:49 +01:00