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Re: problem with parallel make


> 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

> 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'}


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