[MacPorts] #30423: swi-prolog: build fails on OS X Lion

[MacPorts]

#30423: swi-prolog: build fails on OS X Lion
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 Reporter:  weiju.wu@…          |       Owner:  J.Wielemaker@…     
     Type:  defect              |      Status:  new                
 Priority:  Normal              |   Milestone:                     
Component:  ports               |     Version:  2.0.0              
 Keywords:  lion                |        Port:  swi-prolog         
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Comment(by pmoura@…):

 It seems to be an issue with the new default compiler on Lion. Adding
 {{{configure.compiler gcc-4.2}}} to the portfile allows the compilation to
 succeed. Btw, the same issue seems to be causing  the compilation of GNU
 Prolog and YAP to fail. Apparently some incompatible change to mmap.

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Ticket URL: <https://trac.macports.org/ticket/30423#comment:3>
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