[cairo] Re: Flag for FP-challenged platforms

[Koen Kooi]

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Carl Worth schreef:
> On Thu, 30 Nov 2006 20:48:20 +0100, Koen Kooi wrote:
>> Yes, thank you for proposing to break cross-compiling for everyone
>> that doesn't (or can't) use scratchbox.
> 
> I have no plan to do that.
> 
> For any "test the system by running a program" there must be a way for
> the user to override that in order to support cross-compiling. And I
> even mentioned as much above in my comments about "priming the
> autoconf cache".
> 
> And my crazy idea here wouldn't be new breakage anyway. Cairo is
> _already_ doing checks at configure-time by compiling and running
> programs. So if that's broken, then cairo's already broken.

Running programs to check for performance paths during build *is* broken, unless you build
on an identical and *completely idle* machine. My buildmachine is a headless box inside a
university lab, and it builds cairo for my arm toys and for my x86 workstation. While both
 the buildbox and my workstation support 3dnow and mmx (opteron in 32bit and athlon) their
performance figures differ wildly. Apart from that, the opteron is compiling stuff for
other users 24/7.

I don't think cairo has to go through great lenghts to guess stuff, since the average user
won't be compiling stuff anyway.

regards,

Koen
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