[LLVMdev] Registering '-march=' option for LLC

[Reid Spencer]

On Fri, 2006-11-17 at 17:19 -0800, Tanya M. Lattner wrote:
> On Fri, 17 Nov 2006, Seung Jae Lee wrote:
> 
> > Thank you for replying to me. As you recommended, I modified 
> > configure.ac in autoconf folder. But I’m not sure about how to 
> > regenerate configure. Sorry…
> > I tried to follow the way introduced in README.TXT in the autoconf 
> > folder. It asks me to run autoupdate on all the m4 and configure.ac. And 
> > then it asks me to regenerate configure script with AutoRegen.sh. 
> > However, when I did that, I got an error like this: 
> > Your libtool was not detected as being 1.5.10
> 
> You need to have the latest version of libtool (1.5.22). You may get 
> similar errors for other things (autoconf, aclocal, etc). If so, upgrade 
> those as well.

That's actually not quite correct. You need to have exactly libtool
1.5.10. No other version will work. The reason is that we have
incorporated the 1.5.10 version of the ltdl library (and autoconf
checks) into LLVM. Perhaps its time to upgrade, but 1.5.10 is what LLVM
expects and works with.

> 
> -Tanya
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