[29988] trunk/dports/graphics/cairo/Portfile

[Randall Wood]

On 18 Oct 2007, at 15:48, Yves de Champlain wrote:

>
> Le 07-10-18 à 14:08, Ryan Schmidt a écrit :
>
>> On Oct 17, 2007, at 07:54, source_changes at macosforge.org wrote:
>>
>>> Revision: 29988
>>>           http://trac.macosforge.org/projects/macports/changeset/ 
>>> 29988
>>> Author:   yves at macports.org
>>> Date:     2007-10-17 05:54:20 -0700 (Wed, 17 Oct 2007)
>>>
>>> Log Message:
>>> -----------
>>> Add PDF backend variant
>>>
>>> Modified Paths:
>>> --------------
>>>     trunk/dports/graphics/cairo/Portfile
>>>
>>> Modified: trunk/dports/graphics/cairo/Portfile
>>> ===================================================================
>>> --- trunk/dports/graphics/cairo/Portfile	2007-10-17 12:46:29 UTC  
>>> (rev 29987)
>>> +++ trunk/dports/graphics/cairo/Portfile	2007-10-17 12:54:20 UTC  
>>> (rev 29988)
>>> @@ -52,6 +52,9 @@
>>>  	configure.args-append \
>>>  		--disable-xlib
>>>  }
>>> +variant pdf description "Enable PDF backend" {
>>> +	configure.args-append --enable-pdf
>>> +}
>>
>> So, what's this?
>>
>> I didn't even know cairo had an --enable-pdf switch. I only use  
>> cairo for graphviz, and one of the features graphviz gains by  
>> using cairo is the ability to output pdfs. This has always worked  
>> for me, though I've never used --enable-pdf. So does --enable-pdf  
>> get us anything extra? I see from ./configure --help that the  
>> default for this option is "auto" so maybe for me it was  
>> automatically on and for you it was automatically off? I wonder  
>> what influences this automation. Does the pdf ability need any  
>> additional dependencies? If not, shouldn't we enable pdf all the  
>> time rather than putting it in a variant?
>
> There are no dependencies apart from those already listed but I  
> don't how the "auto" is worked out.  I put it as a variant mostly  
> because I was not sure what effects it could have, but it was not  
> necessarily the best approach.

I think that for cairo the best approach for handling the PDF backend  
would be to explicitly enable pdf be default and provide users who  
don't want it the ability to turn it off (ie --disable-pdf)

Randall Wood
rhwood at mac.com
http://shyramblings.blogspot.com

"The rules are simple: The ball is round. The game lasts 90 minutes.  
All the
rest is just philosophy."