On 10/07/2023 05.20, Bruce Ashfield via lists.openembedded.org wrote:
> From: Bruce Ashfield <[email protected]>
>
> kernel version 6.4 introduces a new file that need to have
> absolute paths removed, so we can avoid the buildpaths QA
> warning and have relocatable packages.
>
> We add pmu-flex.h to the processing, and the issue is resolved.
Hi Bruce
We've seen those buildpaths qa warning when building perf for a long
time, and they happen whether we build against a 5.15, 6.2 or 6.5
kernel. More specifically, what we see is
WARNING: perf-1.0-r9 do_package_qa: QA Issue: File /usr/bin/.debug/perf
in package perf-dbg contains reference to TMPDIR [buildpaths]
WARNING: perf-1.0-r9 do_package_qa: QA Issue: File /usr/bin/trace in
package perf contains reference to TMPDIR
File /usr/bin/perf in package perf contains reference to TMPDIR [buildpaths]
Looking at the .o.cmd files, there is indeed nowhere a
-fmacro-prefix-map or -fdebug-prefix-map, and apart from the bison/yacc
stuff, I also don't see where the perf recipe attempts to pass such flags.
It seems we can fix it with
$ git diff
diff --git a/meta/recipes-kernel/perf/perf.bb
b/meta/recipes-kernel/perf/perf.bb
index 420286e..59c0c10 100644
--- a/meta/recipes-kernel/perf/perf.bb
+++ b/meta/recipes-kernel/perf/perf.bb
@@ -81,7 +81,7 @@ EXTRA_OEMAKE = '\
LDSHARED="${CC} -shared" \
AR="${AR}" \
LD="${LD}" \
- EXTRA_CFLAGS="-ldw -I${S}" \
+ EXTRA_CFLAGS="-ldw -I${S} ${DEBUG_PREFIX_MAP}" \
YFLAGS='-y
--file-prefix-map=${WORKDIR}=/usr/src/debug/${PN}/${EXTENDPE}${PV}-${PR}' \
EXTRA_LDFLAGS="${PERF_EXTRA_LDFLAGS}" \
perfexecdir=${libexecdir} \
but I'm quite curious what the difference between our setups is, since
apparently the only problem oe-core has/had was that new file introduced
in v6.4.
FWIW, what we build are vanilla -stable kernels, i.e. "6.2" means
v6.2.16 as tagged by Greg. The only modification of the perf recipe we
do is removing "scripting" from PACKAGECONFIG.
Rasmus
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