[MacPorts] #35528: transfig build fails without error

[MacPorts]

#35528: transfig build fails without error
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 Reporter:  jurgen.defurne@…           |       Owner:  ryandesign@…           
     Type:  defect                     |      Status:  assigned               
 Priority:  Normal                     |   Milestone:                         
Component:  ports                      |     Version:  2.1.2                  
 Keywords:  clang                      |        Port:  transfig               
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Comment(by ryandesign@…):

 The problem occurs because of a combination of factors. First, transfig
 does not build with clang. The portfile was already modified in r89950 to
 use llvm-gcc-4.2 instead of clang, but additionally, not all parts of the
 transfig build were UsingTheRightCompiler, so they still used the system
 default compiler. With Xcode 4.4 (or even 4.3 already?) the system default
 compiler changed from llvm-gcc-4.2 to clang. Finally, the transfig build
 does not detect when parts fail to build, and it proceeds anyway, ending
 up with a "successful" install that's missing parts that should be there.

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Ticket URL: <https://trac.macports.org/ticket/35528#comment:10>
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