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Subject: RE: Question about "native" compiling
Date: Thu, 22 May 2008 17:25:28 -0500
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From: "Rune Torgersen" <runet@innovsys.com>
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linuxppc-embedded-bounces+runet=3Dinnovsys.com@ozlabs.org wrote:
> Hi all,
>=20
> I apologize if the list finds this off topic, but I'm at a
> loss of who to
> ask the question and thought this would be a good place to
> start.  Our
> target is an MPC8347E PowerQUICC II Pro, and we're using the
> latest kernel
> (2.6.25).  We started this project by building on x86 and doing
> cross-compiling to the powerpc target.  As the project
> progressed and we
> started adding applications we found that we couldn't cross-compile
> postgress among other things.  So we switched to native
> compilation on the
> target.  Problem is, it's extreamly slow.  Now our idea is to get our
> hands on a PowerPC based Mac, load it up with Ubuntu and do
> native builds
> on that.  The question is, which Mac to get?  The concern is
> this: a G5 is
> 64-bit but the 8347E is 32-bit.  If we do our compiles on a G5 is it
> really a 'native' compile or is it a cross-compile and we're
> back in the
> same boat as we were with the x86?  Should we use a G4 instead?
>=20
> Thanks for any advice or pointers to other places where I can find
> information.=20

We use a dual G5 to do the exact same thing.
We have a compiler buildt on our target board (Freescale 8280), and on
the G5 we make sure that this compiler is being used (by chrooting into
a copy of the filesystem used on the target).=20
Then we compile all our apps .=20
Only thing we have to do speciial, is to add
--build=3Dpowerpc-unknown-linux-gnu --host=3Dpowerpc-unknown-linux-gnu =
to
the ./configure cammand line.