Re: problem with parallel make

[Andreas Jaeger <aj at suse dot de>]

Josef Zlomek <zlomj9am@artax.karlin.mff.cuni.cz> writes:

>> building with multilibs on x86_64-linux-gnu I get a build failure with
>> a parallel make (-j2 -l7) on my dual Opteron system:
>> /usr/bin/ld: warning: i386 architecture of input file `.libs/allchblk.o' is incompatible with
>>  i386:x86-64 output
>
> The bug only apperas when -j2 is used, with -j4 it is gone. I expect when more
> processes are used something gets build soon enough.
>
> Following patch caused or exposed it.
>
> 2003-08-27  Daniel Jacobowitz  <drow@mvista.com>
>
>         * configure.in: Set RAW_CXX_FOR_TARGET if unset.
>         * configure: Regenerated.
>
> Josef

Thanks for tracking this down.  Daniel and Nathanael, do you have any
ideas on how to fix this?

Cheers,
Andreas

>> The problem is that -m32 is not passed to GCC.  If I run a sequential
>> build, this works for me, just the parallel one fails on this machine
>> (it works on another where I tested it).
>> 
>> Looking at x86_64-suse-linux-gnu/32/config.cache I noticed:
>> 
>> ac_cv_prog_CC=${ac_cv_prog_CC='/builds/gcc/misc/gcc/xgcc -B/builds/gcc/misc/gcc/
>>  -B/opt/gcc/3.4-devel/x86_64-suse-linux-gnu/bin/ -B/opt/gcc/3.4-devel/x86_64-sus
>> e-linux-gnu/lib/ -isystem /opt/gcc/3.4-devel/x86_64-suse-linux-gnu/include -isys
>> tem /opt/gcc/3.4-devel/x86_64-suse-linux-gnu/sys-include'}
>> ac_cv_prog_CPP=${ac_cv_prog_CPP='/builds/gcc/misc/gcc/xgcc -B/builds/gcc/misc/gc
>> c/ -B/opt/gcc/3.4-devel/x86_64-suse-linux-gnu/bin/ -B/opt/gcc/3.4-devel/x86_64-s
>> use-linux-gnu/lib/ -isystem /opt/gcc/3.4-devel/x86_64-suse-linux-gnu/include -is
>> ystem /opt/gcc/3.4-devel/x86_64-suse-linux-gnu/sys-include -E'}
>> 
>> So, the -m32 is missing.  But it's there for CXXCPP:
>> ac_cv_prog_CXXCPP=${ac_cv_prog_CXXCPP='/builds/gcc/misc/gcc/xgcc -shared-libgcc 
>> -B/builds/gcc/misc/gcc/ -nostdinc++ -L/builds/gcc/misc/x86_64-suse-linux-gnu/32/
>> libstdc++-v3/src -L/builds/gcc/misc/x86_64-suse-linux-gnu/32/libstdc++-v3/src/.l
>> ibs -B/opt/gcc/3.4-devel/x86_64-suse-linux-gnu/bin/ -B/opt/gcc/3.4-devel/x86_64-
>> suse-linux-gnu/lib/ -isystem /opt/gcc/3.4-devel/x86_64-suse-linux-gnu/include -i
>> system /opt/gcc/3.4-devel/x86_64-suse-linux-gnu/sys-include  -m32 -E'}
>
>

Andreas
-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj
  SuSE Linux AG, Deutschherrnstr. 15-19, 90429 Nürnberg, Germany
   GPG fingerprint = 93A3 365E CE47 B889 DF7F  FED1 389A 563C C272 A126

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