[yocto] Need clarification on some terms

[Rifenbark, Scott M]

Ahh... thanks.  Just saw this after publishing some other changes.  

Thanks,
Scott

>-----Original Message-----
>From: Paul Eggleton [mailto:paul.eggleton at linux.intel.com]
>Sent: Wednesday, June 12, 2013 5:00 AM
>To: yocto at yoctoproject.org
>Cc: Rifenbark, Scott M
>Subject: Re: [yocto] Need clarification on some terms
>
>On Wednesday 12 June 2013 04:16:30 michael at cubic.org wrote:
>> Paul D. DeRocco wrote on Tuesday, June 11, 2013 at 9:07 PM:
>> > "Following is a list of toolchain recipes..." This is followed by
>> > gcc-cross-initial, gcc-cross-intermediate, gcc-cross. All three of
>these
>> > things say that the toolchain runs on the host and is used to build
>> > software
>> > for the target. So why are there three of them? What are the
>differences
>> > among them?
>>
>> The gcc must be build multiple times when you bootstrap it.
>> For building the gcc you need to build the libc and therefor you need
>to
>> build the linux kernel headers and therefor you need the gcc. Oops.
>>
>> Thats why you first build a gcc only with c support and no libc first.
>> Use that to generate the kernel headers, then build the initial libc
>and
>> then another gcc with libc support and all the frontends you need
>> (c,c++,java,fortran,..). Why there is the gcc-cross-intermediate I am
>not
>> shure, but there will be a reason and another one can clarify that.
>
>gcc-cross-intermediate is gone as of 1.3; as I understand it current
>versions
>of glibc can be compiled using gcc-cross-initial so the intermediate
>step is
>no longer required. We should remove mention of this from the
>documentation
>(other than in the migration section that is).
>
>Cheers,
>Paul
>
>--
>
>Paul Eggleton
>Intel Open Source Technology Centre