On Mon, 2021-12-06 at 14:27 -1000, Steve Sakoman wrote:

On Mon, Dec 6, 2021 at 6:40 AM Henrik Riomar <henrik.riomar@...> wrote:

Hi,

We set the BUILDNAME (via local.conf) variable to the output of "git
describe --long --always" so this info ends up in /etc/version instead
of a date. (i.e to know the exact source version of the code
deployed on a target)

This has worked fine for us up until 3.1.12, but now we just get a
date (201803...) in /etc/version.

After doing a bit of bisecting it appears that this commit is the culprit:

reproducible_build: Remove BUILD_REPRODUCIBLE_BINARIES checking
https://git.yoctoproject.org/poky/commit/?h=dunfell&id=0d6ebaf8ff3232248ebf0e859cd09aefaee54a8a

Since this was cherry-picked from master to fix some reproducibililty
errors I suspected that the issue might also exist in the master
branch.

A quick test with:

BUILD_REPRODUCIBLE_BINARIES = "0"
BUILDNAME = "my custom name"

added to local.conf confirmed that /etc/version was indeed
"20180309123456" instead of the expected "my custom name"

I'm out of time to work on this today, but perhaps Richard might have
some ideas on how to address this.

rootfs-postcommands.bbclass says:

# Perform any additional adjustments needed to make rootf binary reproducible
rootfs_reproducible () {
if [ "${REPRODUCIBLE_TIMESTAMP_ROOTFS}" != "" ]; then
# Convert UTC into %4Y%2m%2d%2H%2M%2S
sformatted=`date -u -d @${REPRODUCIBLE_TIMESTAMP_ROOTFS} +%4Y%2m%2d%2H%2M%2S`
echo $sformatted > ${IMAGE_ROOTFS}/etc/version
bbnote "rootfs_reproducible: set /etc/version to $sformatted"

if [ -d ${IMAGE_ROOTFS}${sysconfdir}/gconf ]; then
find ${IMAGE_ROOTFS}${sysconfdir}/gconf -name '%gconf.xml' -print0 | xargs -0r \
sed -i -e 's@\bmtime="[0-9][0-9]*"@mtime="'${REPRODUCIBLE_TIMESTAMP_ROOTFS}'"@g'
fi
fi
}

so I'd try setting REPRODUCIBLE_TIMESTAMP_ROOTFS to "". I suspect the change
above started setting that to some value incidentally.

Cheers,

Richard