On 11/19/25 10:23 PM, Changqing Li wrote:
Hi, Khem, Richard
This issue and also refer https://git.openembedded.org/openembedded-
core/commit/?id=8898f97b4acc9d5c2c6583c91d05327f9093133e,
both issues caused by randomly mtime of the sources checkout by git.
So I thought maybe change the mtime of files during upack is better,
change like this:
diff --git a/lib/bb/fetch2/git.py b/lib/bb/fetch2/git.py
index 0fcdb19df..c4da45fc6 100644
--- a/lib/bb/fetch2/git.py
+++ b/lib/bb/fetch2/git.py
@@ -752,6 +752,8 @@ class Git(FetchMethod):
else:
runfetchcmd("%s checkout %s" % (ud.basecmd,
ud.revision), d, workdir=destdir)
+ runfetchcmd("%s restore-mtime" % ud.basecmd, d,
workdir=destdir)
+
return True
def clean(self, ud, d):
But restore-mtime is not a git command, need to install git-restore-
mtime, another option is modify all the files by "touch -d "last commit
time"".
What is your suggestion? if you agree fix from fetch2/gitt.py, I can
send a patch.
git restore-mtime has few limitations to consider, e.g. it might have
issues with shallow clones. It works with tracked files only, so if we
patch a git tree using quilt and patch adds a file to the tree, this
might not be something it will consider, uncommitted changes resulting
from patches are going to be ignored as well.
touch -d "last commit time" might be interesting to pursue.
//changqing
On 11/20/25 14:12, Changqing Li via lists.openembedded.org wrote:
From: Changqing Li<[email protected]>
[snip of Makefile]
# bison will create both sqlhist.tab.c and sqlhist.tab.h
sqlhist.tab.h:
sqlhist.tab.c: sqlhist.y sqlhist.tab.h
bison --debug -v --report-file=bison.report -d -o $@ $<
[snip]
sources of libtracefs is fetched by git, the mtime of sqlhist.y,
sqlhist.tab.c is random. so sometimes, sqlhist.tab.c is regenerated,
sometimes, sqlhist.tab.c in original sources in used. bison used to
gernerate sqlhist.tab.c by upstream libtracefs maybe has different
version with the build host one. This make the final libtracefs.so not
reproducible. This fix touch sqlhist.tab.c to make it has the newest
mtime, and sqlhist.tab.c is not regenerated during build.
Signed-off-by: Changqing Li<[email protected]>
---
meta-oe/recipes-kernel/libtracefs/libtracefs_1.8.2.bb | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/meta-oe/recipes-kernel/libtracefs/libtracefs_1.8.2.bb
b/meta-oe/recipes-kernel/libtracefs/libtracefs_1.8.2.bb
index b6bae96896..35eabc7b11 100644
--- a/meta-oe/recipes-kernel/libtracefs/libtracefs_1.8.2.bb
+++ b/meta-oe/recipes-kernel/libtracefs/libtracefs_1.8.2.bb
@@ -16,6 +16,10 @@ SRC_URI =
"git://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git;branch=${BP
inherit pkgconfig bash-completion
+do_compile:prepend() {
+ touch ${S}/src/sqlhist.tab.c
+}
+
do_install() {
oe_runmake install DESTDIR=${D} pkgconfig_dir=${libdir}/pkgconfig
}
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