[Buildroot] GNU Binutils 2.33.1 has been released.

Hi Nick,

Le 14/10/2019 ? 12:44, Nick Clifton a ?crit?:

Hi Romain,

quoted

I tested this new version using toolchain-builder project [1] and discovered
some regressions on arm cortex-m4 and SH4 architectures.

quoted

There is a segfault in elf2flt while building busybox:
"ld (ld-elf2flt):
/builds/kubu93/toolchains-builder/build/opt/armv7m--uclibc--bleeding-edge-2/arm-buildroot-uclinux-uclibcgnueabi/bin/elf2flt

Hmm, that is worrying, but I suppose that it could be a bug in
elf2flt rather than the binutils.  Maybe...

Probably, elf2flt is testing with binutils up to 2.31.1.
We use the latest git version.

Is this problem specific to the ARM architecture ?  (Ie does elf2flt
work when compiled and run for other architecures ?)  If so, then I
would suspect a problem with the changes to the ARM specific code in
the BFD library, and I would probably ask one of the ARM regulars to
take a look.  (Hi Tamar...)

I can't say if it's specific to the ARM architecture. elf2flt is only used when
we use FLAT binary format. This is only the case in Buildroot for the ARM
cortex-m4 architecture.

Are you able to find out where the segmentation fault is occurring ?
Is it inside the BFD library somewhere ?

For now, I just reproduced on gitlab yesterday and reproduced locally today.

The command line is https://pastebin.com/s9hfWpbE

quoted

- sh4 [4]: (sh4, binutils 2.33.1, kernel headers 4.19.79, Glibc | uClibc-ng |
musl, Qemu 3.1)

The system doesn't boot under Qemu.

*sigh* This one will probably be even harder to investigate.  Not being
familiar with Qemu, I do not what the best approach would be.  Can we get
it to tell us why the boot fails ?  Does it think that a binary is invalid
somehow ?

I tried to reproduce but nothing appear on the screen, not even a initial boot
from the kernel...
I can try to use git bisect between binutils 2.32 and 2.33.1, but it will take a
lot of time.

Best regards,
Romain

Cheers
  Nick