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meta-openembedded/meta-oe/dynamic-layers/meta-python/recipes-devtools
Joao Marcos Costa e81e092583 bpftrace: fix buildpaths QA issue in bpftrace-dbg and bpftrace-ptest
With the current version, I had the QA issues below:

WARNING: bpftrace-0.25.1-r0 do_package_qa: QA Issue:
File /usr/lib/bpftrace/ptest/tests/.debug/bpftrace_test in package bpftrace-dbg contains reference to TMPDIR [buildpaths]

WARNING: bpftrace-0.25.1-r0 do_package_qa: QA Issue:
File /usr/lib/bpftrace/ptest/tests/bpftrace_test in package bpftrace-ptest contains reference to TMPDIR [buildpaths]

A bit of find + grep + strings show that this originally comes from:

field_analyser.cpp.o: [my tmpdir...]/bpftrace/0.25.1/build/tests/data
field_analyser.cpp.o: [my tmpdir...]/bpftrace/0.25.1/sources/bpftrace-0.25.1/tests/data/data_source.c
field_analyser.cpp.o: [my tmpdir...]/bpftrace/0.25.1/sources/bpftrace-0.25.1/tests/data

The .rodata section is infected with these, and after some more digging,
the paths come from debug symbols (i.e., .debug_line_str) in
data_source.o:

build/tests/data/data_source.o: /src/update-2026.01/build/tmp/work/riscv64.../bpftrace/0.25.1/build/tests/data
build/tests/data/data_source.o: /src/update-2026.01/build/tmp/work/riscv64.../bpftrace/0.25.1/sources/bpftrace-0.25.1/tests/data/data_source.c
build/tests/data/data_source.o: /src/update-2026.01/build/tmp/work/riscv64.../bpftrace/0.25.1/build/tests/data
build/tests/data/data_source.o: /src/update-2026.01/build/tmp/work/riscv64.../bpftrace/0.25.1/sources/bpftrace-0.25.1/tests/data

I'm not familiar with the magic performed by BuildBPF.cmake, but as far
as I can tell, gcc is being invoked with "-g" and no prefix mapping,
so there is no way of stopping the source path(s) from ending in data_source.o.

This patch adds a "bridge" between this .cmake file and bpftrace's
recipe, where I export DEBUG_PREFIX_MAP, so gcc is invoked with the
-ffile-prefix-map flags from OE Core.

The end result is:

$ strings ./build/tests/data/data_source.o | grep "debug\/bpftrace"
/usr/src/debug/bpftrace/0.25.1/tests/data/data_source.c
/usr/src/debug/bpftrace/0.25.1/tests/data
/usr/src/debug/bpftrace/0.25.1/tests/data
/usr/src/debug/bpftrace/0.25.1/tests/data

Signed-off-by: João Marcos Costa <joaomarcos.costa@bootlin.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
2026-06-25 08:42:03 -07:00
..
2026-03-30 19:46:38 -07:00