Hello Frans,
I tracked it down - libunwind publishes unwind.h, and gcc uses an internal
file of the same name while being built.
Yes gcc has its own version of libunwind which it used unless
configured with --with-system-libunwind
IIUC the problem happens with target gcc not with cross-gcc. target
gcc is built using cross-gcc and
<sysroot>/use/include could be preferred over the location of
libunwind.h which is in gcc sources
If thats the case then we need to fix gcc build to not look into
standard sysroot/usr/include but prefer
the local unwind.h when its using internal libunwind. The problem
would not show up if the libunwind versions
were matching but that may not be the case always and I dont know of
hand how we can fix the gcc configury/build
to ignore installed unwind.h
You workaround would only work if build sequence was followed if some
one just cleaned gcc and rebuild it
the problem will resurface.
Thanks for the analysis Khem.
This is indeed more or less what I had expected.
For me this patch gets a NAK as it does only masks the problvem in
some cases but not really solves it.
You're right with this analysis; however, the patch enables Openembedded
to be built *at all*. If you care less about whether you're able to
actually build and if you have the time to wait until someone ventures
deep into the gcc build and fixes the cause, then this is the way to go.
For us, however, this patch is a valid workaround. It will make
Openembedded work for us until the original issue is fixed.
Regards,
Thilo
--
Dipl.-Ing (FH) Thilo Fromm, MSc., Embedded Systems Developer
DResearch Digital Media Systems GmbH
Otto-Schmirgal-Str. 3, D-10319 Berlin, Germany
Tel: +49 (30) 515 932 228 mailto:[email protected]
Fax: +49 (30) 515 932 77 http://www.dresearch.de
Amtsgericht: Berlin Charlottenburg, HRB:54412
Ust.-IDNr. DE169013825; WEEE Reg.-Nr. DE 85995642
Geschäftsführer: Dr. M. Weber, W. Mögle
_______________________________________________
Openembedded-devel mailing list
[email protected]
http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
