[rescue] Building gcc

[Kevin Loch]

I've never bothered with step 3, and I think the docs say
that stage2 and 3 will never be exactly the same on some
systems (like Solaris).

KL

Robert Rose wrote:
> 
> >I have used the gcc from sunfreeware without recompilation, and
> >it works fine.  If the sunfreeware version is acceptable,
> 
> I've preferred the stuff from ibiblio (was metalab), their packages seem to
> be more reliable.
> 
> >it should be no different than the same version compiled by you.
> >That is of course if sunfreeware does the 2-stage process.
> 
> I was told it is actually a 3 stage process:
> 
> 1. Build a compiler from source code with downloaded C compiler.
> 2. Use compiler generated in step 1 to compile the "real" compiler from
> source code.
> 3. Use the "real" compiler to compile from source code and compare the
> binaries generated with the "real" compiler binaries.
> 
> If steps 2 & 3 produces identical binaries, then you're done.
> 
> Rob.
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