Le vendredi 20 décembre 2013 19:40:58 UTC+1, Volker Braun a écrit :
>
> The new developer manual explains how to use git and the new way to 
> package stuff. It should be in SAGE_ROOT/src/doct/output/en/developer. Feel 
> free to ask if you run into any problems...
>

This is now trac#15561 <http://trac.sagemath.org/ticket/15561>, which needs 
review.

>
> Incidentally, it is *NOT* on our webpage (
> http://www.sagemath.org/doc/developer<http://www.google.com/url?q=http%3A%2F%2Fwww.sagemath.org%2Fdoc%2Fdeveloper&sa=D&sntz=1&usg=AFQjCNFFyFfaLtXYCOJ6oYDvq93clEz3sQ>).
>  
> Harald, do we have a plan for updating the docs to Sage 6?
>
>
>
> On Friday, December 20, 2013 6:21:00 PM UTC, Emmanuel Charpentier wrote:
>>
>> Dear Volker,
>>
>> Le mercredi 18 décembre 2013 22:23:21 UTC+1, Volker Braun a écrit :
>>>
>>> I get the same error, btw. Your big machine machine has a better 
>>> freetype or more/different fonts. The error comes from libharfbuzz, the 
>>> f.d.o. OpenType shaper. Sage compiles its own freetype, but there are 
>>> different compile-time features in freetype that can easily conflict with 
>>> the system freetype.
>>>
>>
>> Okay. Am I wrong in thinking that a newer version of freetype *might* 
>> work around the problem (the real solution, avoiding LD_LIBRARY_PATH, seems 
>> to involve a *lot* of work and is way above my current comprehension of 
>> sage sources) ?
>>
>> If so, does an adaptation of the sage developper's guide exist for the 
>> gi-supported versions of sage (6.0 and up) ? Creating a new spkg for 5.13 
>> seems a bit futile now, and I checked that I could build sage 6.0.
>>
>> In other words, where can I find a bit of git handholding for integrating 
>> a "better" freetype in sage ? <Blush> I'm new to git </Blush>.
>>
>> I agree that another workaround might be to *remove* 
>> freetype-2.3.5-incompatible fonts from "big machine", but there might be 
>> hell to pay with other programs...
>>  
>>
>>> The double slashes are fine, // is identical to / in unix paths unless 
>>> it is an the beginning.
>>>
>>
>> That's what I thought, but R's dyn.load might be different (however, 
>> trying to dyn.load R's X11 library with a corrected path  gives the same 
>> result as with the original path).
>>
>>>
>>>
>>>
>>> On Wednesday, December 18, 2013 8:23:51 PM UTC, Emmanuel Charpentier 
>>> wrote:
>>>>
>>>> A couple more data points :
>>>>
>>>> 1) on a smaller machine (but still amd64 and Debian testing), sage 5-13 
>>>> compilation from sources gave me an R spkg that **has** graphics 
>>>> capabilities. But for the life of me, I can't pinpoint what is installed 
>>>> on 
>>>> the small machine that enables those capabilities and is lacking on the 
>>>> large one. Any hint ?
>>>>
>>>> 2) The compilation process leads to some strange hardcoded paths. On 
>>>> the large machine :
>>>>
>>>> charpent@asus16-ec:/usr/local/sage-5.13$ ./ssage -R
>>>> bash: ./ssage: Aucun fichier ou dossier de ce type
>>>> charpent@asus16-ec:/usr/local/sage-5.13$ ./sage -R
>>>>
>>>> R version 3.0.2 (2013-09-25) -- "Frisbee Sailing"
>>>> Copyright (C) 2013 The R Foundation for Statistical Computing
>>>> Platform: x86_64-unknown-linux-gnu (64-bit)
>>>>
>>>> R est un logiciel libre livré sans AUCUNE GARANTIE.
>>>> Vous pouvez le redistribuer sous certaines conditions.
>>>> Tapez 'license()' ou 'licence()' pour plus de détails.
>>>>
>>>> R est un projet collaboratif avec de nombreux contributeurs.
>>>> Tapez 'contributors()' pour plus d'information et
>>>> 'citation()' pour la façon de le citer dans les publications.
>>>>
>>>> Tapez 'demo()' pour des démonstrations, 'help()' pour l'aide
>>>> en ligne ou 'help.start()' pour obtenir l'aide au format HTML.
>>>> Tapez 'q()' pour quitter R.
>>>>
>>>> > capabilities()
>>>>     jpeg      png     tiff    tcltk      X11     aqua http/ftp  sockets 
>>>>    FALSE    FALSE    FALSE    FALSE    FALSE    FALSE     TRUE     TRUE 
>>>>   libxml     fifo   cledit    iconv      NLS  profmem    cairo 
>>>>     TRUE     TRUE     TRUE     TRUE     TRUE    FALSE    FALSE 
>>>> Message d'avis :
>>>> In doTryCatch(return(expr), name, parentenv, handler) :
>>>>   impossible de charger l'objet partagé 
>>>> '/usr/local/sage-5.13/local/lib/R//modules//R_X11.so':
>>>>
>>>> These doubled slashes are highly suspicious to me. ISTR having had the 
>>>> same problem with orther R packages (most notably with Rcpp-derived 
>>>> packages).
>>>>
>>>>   /usr/lib/x86_64-linux-gnu/libharfbuzz.so.0: undefined symbol: 
>>>> FT_Face_GetCharVariantIndex
>>>> > q("no")
>>>>
>>>> One can check that the needed module **is** here :
>>>>
>>>> charpent@asus16-ec:/usr/local/sage-5.13$ ls -l 
>>>> local/lib/R/modules/R_X11.so 
>>>> -rwxr-xr-x 1 charpent charpent 341761 déc.  18 20:11 
>>>> local/lib/R/modules/R_X11.so
>>>>
>>>> and is at least of the expected type :
>>>>
>>>> charpent@asus16-ec:/usr/local/sage-5.13$ file 
>>>> local/lib/R/modules/R_X11.so local/lib/R/modules/R_X11.so: ELF 64-bit LSB  
>>>> shared object, x86-64, version 1 (SYSV), dynamically linked, 
>>>> BuildID[sha1]=3cbd90661223e67daad0172034908979e7633afa, not stripped
>>>> charpent@asus16-ec:/usr/local/sage-5.13$
>>>>
>>>> Any hint, anyone ?
>>>>
>>>

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