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
cleanup_printf2puts
echo.c
embedded_scripts
find_bad_common_bufsiz
find_stray_common_vars
find_stray_empty_lines
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
Kbuild.include build system: remove KBUILD_STR() 2020-04-29 14:52:19 +02:00
Kbuild.src
Makefile.build
Makefile.clean
Makefile.host
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
mkdiff_obj
mkdiff_obj_bloat *: a few more NOINLINEs 2009-10-08 14:35:37 +02:00
mkmakefile
objsizes ...and exclude LC_ALL too 2008-12-01 12:38:36 +00:00
randomtest randomconfig fixes 2020-06-24 00:27:37 +02:00
randomtest.loop
sample_pmap
showasm
test_make_clean
test_make_O
test_setenv_leak.c
trylink trylink: do not drop libs from CONFIG_EXTRA_LDLIBS 2021-02-23 23:09:49 +01:00