[LTP] uclinux support?

[Christophe Lyon]

On Mon, 12 Nov 2018 at 12:03, Cyril Hrubis <chrubis@suse.cz> wrote:
>
> Hi!
> > I wanted to try to run at least some of the LTP tests on a uclinux
> > system for arm (arm-uclinuxfdpiceabi), as I am in the process of
> > upstreaming the toolchain support for the FDPIC ABI for ARM.
> >
> > I've tried this:
> > $ make autotools
> > $ configure CC=~XXX/bin/arm-none-uclinuxfdpiceabi-gcc
> > CXX=~XXX/bin/arm-none-uclinuxfdpiceabi-g++ --host
> > arm-none-uclinuxfdpiceabi
> > $ make all
> > XXX/lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/../../../../arm-none-uclinuxfdpiceabi/bin/ld:
> > ../../lib/libltp.a(tst_test.o): in function `fork_testrun':
> > XXX/ltp/lib/tst_test.c:1104: undefined reference to `fork'
> > XXX/lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/../../../../arm-none-uclinuxfdpiceabi/bin/ld:
> > ../../lib/libltp.a(tst_test.o): in function `safe_fork':
> > XXX/ltp/lib/tst_test.c:395: undefined reference to `fork'
> > XXX/lib/gcc/arm-none-uclinuxfdpiceabi/9.0.0/../../../../arm-none-uclinuxfdpiceabi/bin/ld:
> > ../../lib/libltp.a(tst_res.o): in function `tst_fork':
> > XXX/ltp/lib/tst_res.c:421: undefined reference to `fork'
> >
> > config.h has:
> > #define UCLINUX 1
> > /* #undef HAVE_FORK */
> > #define HAVE_VFORK 1
> >
> > so it looks like confgure correctly detected the target system.
> >
> > Am I missing something?
>
> uClinux support in LTP has been broken for years and nobody seemed to
> really care. I even tried to ask if there is someone interesting in
> running LTP on uClinux on the uClinux mailing list but it seems that
> even the list is basically dead at this point. So for a last year or so
> we are slowly getting rid of the uClinux specific bits from the codebase
> in order to simplify the LTP maintenance. You are free to step up and
> restore uClinux support in LTP if you have time for that but unless that
> happens we will continue to stage it out.
>

OK understood, I was right to ask :)

I'd like to roll back to a point where it was mostly working, any idea
when that would be?
I've looked at the history, and tried several commits that seemed to
remove uclinux support,
but I'm still facing similar errors (I'm now back to 2011....)

A point were a subset worked would be nice, I'd like to run tests
involving unwinding and
signals.

I'm not sure I'll have time to work on resurrecting uclinux support in
LTP though,
I didn't anticipate it was beeing removed.

Thanks

Christophe

> --
> Cyril Hrubis
> chrubis@suse.cz