[MacPorts] #29737: mesa upgrade fails due to "missing" libxml2

[MacPorts]

#29737: mesa upgrade fails due to "missing" libxml2
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 Reporter:  aeronova@…          |       Owner:  jeremyhu@…           
     Type:  update              |      Status:  assigned             
 Priority:  Normal              |   Milestone:                       
Component:  ports               |     Version:  1.9.2                
 Keywords:                      |        Port:  mesa                 
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Comment(by afb@…):

 Replying to [comment:14 ryandesign@…]:
 > Ok, so what's been shown above confirms that mesa needs a python with
 the libxml2 module. Apple's presumably doesn't come with it.

 Apple disables python in their libxml2, unless you rebuild it:
 {{{
 Extra_Configure_Flags = --enable-static=no --with-python=no --with-
 iconv=no --with-icu=yes
 }}}

 10.6: http://opensource.apple.com/source/libxml2/libxml2-21.11.1/
 10.5: http://opensource.apple.com/source/libxml2/libxml2-17.7.8/

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Ticket URL: <https://trac.macports.org/ticket/29737#comment:16>
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