Benjamin,
I am saying that the llvm-gcc42 package built with the
llvm 2.3 and llvm-gcc-4.2 source code releases from
llvm.org can in fact do link-time-optimization in llvm-gcc,
llvm-g++ and llvm-gfortran. The trick is not to use the
cctools in /usr/bin but that in /Developer/usr/bin to
build the llvm-gcc42 package. The current Xcode 3.1
Developer Preview 2 is available to anyone with a
free ADC account from connect.apple.com. The llvm
developers would be happy to see the LTO feature
exercised as much as possible.
Jack
On Mon, Jun 16, 2008 at 09:12:39PM -0400, Benjamin Reed wrote:
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> Jack Howarth wrote:
> | After a consulting with Chris Lattner at Apple, I found
> | out that we can use the Link-Time-Optimization in llvm 2.3
> | by building it to use LD set to /Developer/usr/bin/ld (assuming
> | that Xcode 3.1 Developer Preview 2 is installed). I was able
> | to build both the sample code shown in Xcode 3.1...
> |
> |
> file:///Developer/Documentation/DocSets/com.apple.ADC_Reference_Library.DeveloperTools.docset/Contents/Resources/Documents/releasenotes/DeveloperTools/RN-llvm-gcc/index.html
> |
> | I was also able to build MDBNCH with llvm-gfortran at -O4 as well and the
> | resulting binary runs fine. I've uploaded fink packaging with
> | this change to...
> |
> |
> http://sourceforge.net/tracker/index.php?func=detail&aid=1859491&group_id=17203&atid=414256
>
> Are you saying the fink gcc42 will required xcode 3.1 beta? Is there
> any alternative to making it do so? I've seen a number of things that
> xcode 3.1 breaks (not necessarily in fink) and I'm not sure general Fink
> stuff is all that well-tested with the new beta yet.
>
>
> - --
> Benjamin Reed a.k.a. Ranger Rick
> Fink, KDE, and Mac OS X development
>
> Blog: http://www.raccoonfink.com/
> Music: http://music.raccoonfink.com/
>
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