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D.gnu - Building on Debian 7

Hi all,

I decided it was about time I tested my described how-to-build-GDC method (cf.
earlier postings:-) on a fresh system.

So, I installed a basic Debian 7 system in VirtualBox and installed all the
dependencies listed on:
http://wiki.dlang.org/GDC/Installation/Generic

Then, it's

     cd ~/code/D/gdc/dev
     ./setup-gcc.sh ../gcc-4.8.1/
     cd ..
     mkdir objdir
     cd objdir
     ../gcc-4.8.1/configure --enable-languages=d --disable-multilib
--enable-checking=release --prefix=/opt/gdc
     make 2>&1 | tee build.log

I don't want to post the full build log, but the build falls over when building
cc1 with the error:

    collect2: error: ld returned 1 exit status
    make[3]: *** [cc1] Error 1
    make[3]: Leaving directory ~/code/D/gdc/objdir/gcc
    make[2]: *** [all-stage3-gcc] Error 2
    make[2]: Leaving directory ~/code/D/gdc/objdir
    make[1]: *** [stage3-bubble] Error 2
    make[1]: Leaving directory ~/code/D/gdc/objdir
    make: *** [all] Error 2

I tried running the command to build cc1 manually in the hope that it would
produce a more clear indicator of what was wrong, but no luck. :-(

Any ideas what dependency might be missing or else what might be wrong?  apt-get
build-dep gcc lists a whole host of different packages, but I don't want to just
blindly pull them in as the whole point is to work out which of them are
actually relevant.

Thanks & best wishes,

    -- Joe
Jul 30 2013