On Nov 3, 2009, at 6:39 PM, Dr. David Kirkby wrote:
> Robert Bradshaw wrote:
>> On Nov 3, 2009, at 5:28 PM, Dr. David Kirkby wrote:
>>
>>> If one tries to build Sage on OpenSolaris, python will not build,
>>> complaining
>>> about a missing md5 module.
>>>
>>>
>>> File "<string>", line 1, in <module>
>>> File "/export/home/drkirkby/sage-4.2/local/lib/python/hashlib.py",
>>> line 136,
>>> in <module>
>>> md5 = __get_builtin_constructor('md5')
>>> File "/export/home/drkirkby/sage-4.2/local/lib/python/hashlib.py",
>>> line 63,
>>> in __get_builtin_constructor
>>> import _md5
>>> ImportError: No module named _md5
>>>
>>> real 2m15.850s
>>> user 1m46.382s
>>> sys 0m19.649s
>>> sage: An error occurred while installing python-2.6.2.p4
>>>
>>>
>>> William said the other day the way around this is to build the
>>> OpenSSL libraries
>>> first. Then I looked and see that the OpenSSL libraries were at one
>>> time
>>> included in Sage, but were removed since they are not GPL. This was
>>> done in
>>> ticket #478
>>>
>>> http://trac.sagemath.org/sage_trac/ticket/478
>>>
>>> So I'm not sure what to do here. Clearly I could install the OpenSSL
>>> libraries,
>>> and will no doubt do that so progress can be made. But this seems
>>> quite a
>>> fundamental problem. There seems two choices
>>>
>>> * Include OpenSSL with Sage, which we can't do as its not GPL
>>> * Tell people to build that themselves, which is still meaning
>>>
>>> BTW, I was hoping to get my changes for the code which checks the
>>> prerequisites
>>> for Sage (version 0.5) reviewed.
>>>
>>> http://trac.sagemath.org/sage_trac/ticket/7352
>>>
>>> Should OpenSSL library support be considered a prerequiste for Sage?
>>
>> I don't think so, at least not yet. If Sage builds fine and passes
>> all
>> doctests except for this one detail, then perhaps we should bring it
>> up again at that point, but it really sounds like a bug in the
>> OpenSolaris linker (not being able to build gnutls) and adding a
>> prerequisite seems like a heavy-handed fix.
>>
>> - Robert
>
> gnutls builds fine with only one set of libraries. I do not know if
> that is a
> linker bug, or a bug in the way the linker is called, which uses
> libtool.
>
> According to this very old trac ticket
>
> http://trac.sagemath.org/sage_trac/ticket/478
>
> "Unfortunately, gnutls's presence isn't enough for Python to build
> the "md5"
> module, and SAGE needs that module. "
Hmm... the ticket also says as the resolution "we did this in May,
2007" but I don't know/remember what "this" is.
Not sure what the right solution is here... clearly we can't ship
OpenSSL, do we just happen to have it on all the systems we build on?
- Robert
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