diff options
| author | Leah Rowe <leah@libreboot.org> | 2023-10-13 23:28:11 +0100 |
|---|---|---|
| committer | Leah Rowe <leah@libreboot.org> | 2023-10-13 23:29:22 +0100 |
| commit | 6846c9f735e1cee2900c331530e3abbecf615040 (patch) | |
| tree | 511e551e5a32866ae8bdfdf35314ef95dba05a8c /script/update/project | |
| parent | c401efdd0371aee733c8672a645baab49b3e3b86 (diff) | |
update/release: if *GNU* tar, use --mtime
with --mtime, files added to the archive can be set
to a static date (in this case, the unix epoch)
the one used here is derived from git commit dates,
and it is static; if not being handled in lbmk.git,
the versiondate file never changes
this is the first patch in a series of patches designed
to bring about reproducible builds in libreboot
a solution will need to be found, for non-GNU tar
implementations, because they did not have an
equivalent option according to their manpages.
for example, BSD tar implementations.
perhaps i could systematically go around changing
file dates, on each file, as a fallback behaviour?
Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'script/update/project')
| -rwxr-xr-x | script/update/project/release | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/script/update/project/release b/script/update/project/release index 519efbcf..69772415 100755 --- a/script/update/project/release +++ b/script/update/project/release @@ -259,8 +259,15 @@ insert_version_files() mktarball() { + # preserve timestamps for reproducible tarballs + tar_implementation="$(tar --version)" + tar_implementation="${tar_implementation% *}" + mtime="" + [ "${tar_implementation}" = "tar (GNU tar)" ] && \ + mtime="--mtime=${versiondate}" + [ "${2%/*}" = "${2}" ] || x_ mkdir -p "${2%/*}" - x_ tar -c "${1}" | xz -T0 -9e > "${2}" + x_ tar -c "${1}" ${mtime} | xz -T0 -9e > "${2}" ( [ "${2%/*}" != "${2}" ] && x_ cd "${2%/*}" x_ sha512sum "${2##*/}" > "${2##*/}.sha512" |