I agree with William's synopsis. You definitely have 64 bit hardware,
but a 32 bit OS. It's not that your hardware is "old". I was just
wrong about that. We support much older hardware than Core 2's!
Note that you will get an approximately 2x speedup of much
mathematical software if you upgrade your linux to a 64 bit linux. So
it is worth considering.
Anyhow, the export thing should fix your problem.
Bill.
2009/12/23 William Stein :
> 2009/12/23 Nareto :
>> Hello Bill, thanks for replying. My system is:
>> $ uname -a
>> Linux tosharch 2.6.31-ARCH #1 SMP PREEMPT Tue Nov 10 19:48:17 CET 2009
>> i686 Intel(R) Core(TM)2 Duo CPU T7250 @ 2.00GHz GenuineIntel GNU/Linux
>>
>> so it's a 32bit. Old? It's no older than 3 years, which (sigh) I guess
>> is old in computer terms.
>
> I think you have 64-bit *hardware* but you are running a 32-bit OS on
> it. This is probably confusing the Sage build system somehow.
>
>> I did find out something. I downloaded as you suggested mpir 1.3.0-rc3
>> and it compiled without errors. 'make check' also didn't give errors
>> and reported "All 3 tests passed". I was looking at the ./configure
>> output and comparing it to the one from the sage compilation and I
>> spotted this difference:
>>
>> mpir 1.2.p9 (from sage's sources):
>> using ABI="64"
>
> That's the problem. Try setting
>
> export ABI=32
>
> before building Sage.
>
> We don't set ABI in the spkg-install for mpir, so I have no idea how
> it's getting set to 64 instead of 32.
>
> William
>
>> CC="gcc -std=gnu99"
>> CFLAGS="-march=i686 -mtune=core2 -O2 -pipe"
>> CPPFLAGS=""
>> CXX="g++"
>> CXXFLAGS="-march=i686 -mtune=core2 -O2 -pipe"
>> MPN_PATH=" x86_64/core2 x86_64 generic"
>>
>> mpir 1.3.0-rc3:
>> using ABI="32"
>> CC="gcc -std=gnu99"
>> CFLAGS="-m32 -O2 -fomit-frame-pointer -mtune=core2 -march=core2"
>> CPPFLAGS=""
>> MPN_PATH=" x86/core2 x86 generic"
>>
>> is this relevant? I'll ask sage people how to get it to use ABI=32 and
>> see if it works
>>
>> regards,
>> Renato
>>
>> --
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>>
>
>
>
> --
> William Stein
> Associate Professor of Mathematics
> University of Washington
> http://wstein.org
>
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