[MacPorts] #34506: giflib: many new dependencies (because of xmlto)

[MacPorts]

#34506: giflib: many new dependencies (because of xmlto)
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 Reporter:  dluke@…             |       Owner:  ryandesign@…           
     Type:  enhancement         |      Status:  new                    
 Priority:  Normal              |   Milestone:                         
Component:  ports               |     Version:  2.1.1                  
 Keywords:                      |        Port:  giflib                 
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Comment(by dluke@…):

 It looks like the manages are in the tarball when first extracted. I think
 you could just take doc (and pic) out of SUBDIRS in the generated
 Makefile.

 Since I don't care about the HTML docs, personally, I would prefer if
 there was a +extra_docs variant that wasn't default, but any way to remove
 the dependency on xmlto would make me happy :)

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Ticket URL: <https://trac.macports.org/ticket/34506#comment:2>
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