On Mon, Jul 18, 2022 at 10:45 AM Naresh Kamboju naresh.kamboju@linaro.org wrote:

with reference to other email thread on perf build failure on Linus mainline https://lore.kernel.org/bpf/20220715191641.go6xbmhic3kafcsc@awork3.anarazel....

I see perf build failures on stable-rc 5.18 .. 5.4 with this error [1] and also noticed on today's linus mainline tree.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

steps to reproduce:

tuxmake --runtime podman \ --target-arch x86_64 \ --toolchain gcc-11 \ --kconfig https://builds.tuxbuild.com/2C7oWWWYOYGFtqq4SWX1yG4a2Ne/config \ debugkernel headers kernel modules perf

Error log:

CC event-parse-api.o CC staticobjs/btf_dump.o find: 'x86_64-linux-gnu-gcc/arch': No such file or directory error: Found argument '-I' which wasn't expected, or isn't valid in this context

USAGE: sccache [FLAGS] [OPTIONS] [cmd]...

For more information try --help

and

CC util/annotate.o MKDIR util/ CC util/block-range.o MKDIR bench/ CC bench/sched-pipe.o util/annotate.c: In function 'symbol__disassemble_bpf': util/annotate.c:1752:9: error: too few arguments to function 'init_disassemble_info' 1752 | init_disassemble_info(&info, s, | ^~~~~~~~~~~~~~~~~~~~~ In file included from util/annotate.c:1709: /usr/include/dis-asm.h:472:13: note: declared here 472 | extern void init_disassemble_info (struct disassemble_info *dinfo, void *stream, | ^~~~~~~~~~~~~~~~~~~~~

This include is guarded by: #if defined(HAVE_LIBBFD_SUPPORT) && defined(HAVE_LIBBPF_SUPPORT)

and from the header path in the failure you are getting an installed version of libbfd from /usr/include. Using libbfd (GPLv3) with perf (GPLv2) is becoming an under tested combination due to: https://www.gnu.org/licenses/gpl-faq.en.html#v2v3Compatibility Add the make flag NO_LIBBFD=1 to test without libbfd, which will most accurately match what distributions build.

Testing on my own machine with libbfd version 2.38 didn't show any failures.

Thanks, Ian

[1] https://builds.tuxbuild.com/2C7oWWWYOYGFtqq4SWX1yG4a2Ne/

Best regards Naresh Kamboju

-- Linaro LKFT https://lkft.linaro.org