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List:       gentoo-dev
Subject:    Re: [gentoo-dev] Patch for absolute minimal GCC for distcc environment
From:       Andrew de Quincey <adq_dvb () lidskialf ! net>
Date:       2005-04-03 14:21:48
Message-ID: 200504031521.48921.adq_dvb () lidskialf ! net
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On Sunday 03 April 2005 13:21, Andrew de Quincey wrote:
> On Sunday 03 April 2005 13:18, Andrew de Quincey wrote:
> > On Sunday 03 April 2005 11:35, Stuart Longland wrote:
> > > Andrew de Quincey wrote:
> > > > On Sunday 03 April 2005 03:10, Andrew Gaffney wrote:
> > > >>Andrew de Quincey wrote:
> > > >>>Hi, I hope this is the correct place to send this.
> > > >>>
> > > >>>I have setup distcc in my network. Most of the hosts are i686, but
> > > >>> one of them is x86_64. I wish to distribute tasks to the i686
> > > >>> machines from the x86_64 machine. This involves installing a cross
> > > >>> compiler on the i686 machines for x86_64 tasks. Crossdev is
> > > >>> overkill for this - I don't actually _need_ glibc and the like on
> > > >>> the client machines for a simple distcc environment. It really adds
> > > >>> to the upgrade time when emerge sync; emerge worlding.
> > > >>
> > > >>crossdev -s1 -t <x86_64 CHOST>
> > > >
> > > > According to the docs, that doesn't compile a c++ compiler:
> > > >
> > > >     -s1, --stage1         Build a C compiler (no libc/C++)
> > >
> > > And guess what... no libc... no c++.  

The dependency on libc is not in the c++ compiler. This is what led me to 
realise I could do this. The dependency on libc comes from when it builds the 
target libraries - libgcc & libstdc++ and the like.

First of all, gcc builds all the compilers - C and C++. After its done that, 
it compiles libgcc etc - and as I said earlier, this is what needs a libc for 
the target machine.

My patch simply disables the compilation/installation of the target machine's 
libraries. All you end up with are the binaries of the cross compilers; which 
is all you really want for distcc.

Have you had a chance to try it out yet? Lemme know if you like it, and I'll 
see if I can clean it up more.
--
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