On Tuesday, March 13, 2012 5:11:00 PM UTC-7, Dima Pasechnik wrote:
>
>
>
> On Monday, 12 March 2012 06:15:35 UTC+8, Jeroen Demeyer wrote:
>>
>> I have made a spkg for GCC (GNU compiler collection) version 4.6.3 with
>> compilers for C, C++ and Fortran, see Trac #12369.
>>
>> The GCC spkg depends on an MPC (multi-precision complex numbers) spkg.
>> There has been an optional MPC package and a Sage interface for it.  GCC
>> would use the upgraded MPC package from #12515.
>>
>> According to (unwritten?) rules, one cannot add a spkg as standard
>> package if it hasn't been an optional spkg first.  I would like to ask
>> for an exception for GCC and add it immediately as standard package in
>> sage-5.0.  Also MPC would need to become a standard package, but this
>> already has been an optional package and so is less controversial.
>>
>> Let me clarify that GCC would not always be built: if the system already
>> contains sufficiently recent versions of gcc, g++ and gfortran (or g95
>> or g77), then GCC would not be built.  Currently, "sufficiently recent
>> version of gcc" is defined as: at least 4.4.0 but not 4.6.0 nor 4.6.1
>> (there are known bugs in cliquer and rubiks with these gcc versions).
>>
> $ gcc -v
> Using built-in specs.
> Target: i686-apple-darwin10
> [...]
> gcc version 4.2.1 (Apple Inc. build 5666) (dot 3)
>
> You seem to indicate this will not be used to build Sage any more.
> Right?
> (even though this is a working setup, as far as Sage 5.0.beta* are 
> concerned...
>

In my experience, it's not a working setup on OS X Lion: pari fails 
self-tests (and this also leads to failures in Sage doctests), gsl fails 
self-tests, and symmetrica also causes failures in Sage doctests.  See also 
#12459.  (See #11881 for the meta ticket for building on Lion.)

I guess the answer to your question is yes, though: even with OS X 10.6 or 
earlier, the proposal is to build gcc.

-- 
John

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