[lfs-support] questions about chapter 5.5.1

Robin rc.rattusrattus at gmail.com
Thu Mar 27 20:36:52 PDT 2014

On 28 March 2014 03:07, François Bissey
<francois.bissey at canterbury.ac.nz> wrote:
> Hi,
> I suspect it may be a case of "to much knowledge is dangerous".
> Having some experience in building cross compilers and bootstrapping
> systems in the past I found some elements in that chapter troubling
> enough to stop and post here first:
> 1) There are instructions to download and unpack gmp,mpfr and mpc.
> But nowhere to configure && compile them.
> The hints that I have from the remaining of your instructions is that
> you don't want to install them.
> 2) we are asked to gcc so that it looks for ld* in /tools/lib{,32,64} rather
> than in plain /lib{,32,64}. Yet, at this stage we haven't built glibc
> which would provide it, so there is nothing in /tools/lib* at this stage.
> It looks to me like this will be useful in pass 2 but could lead to
> breakage in pass 1.
> 3) configuration options for gmp and mpc? Only mpfr paths are given,
> and they would need to be compiled first - statically I am guessing.
> Francois
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1) I read it as the gcc pass 1 build just requires the in-tree sources
of gmp, mpfr and mpc.


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