[MacPorts] #35683: Atlas does not produce threaded libraries on Leopard

[MacPorts]

#35683: Atlas does not produce threaded libraries on Leopard
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  Reporter:  vince@…  |      Owner:  vince@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.1.2
Resolution:           |   Keywords:  atlas threads
      Port:  atlas    |
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Comment (by zan@…):

 Configure with --dylib (or --shared) creates a shared_all target in
 $build.dir/lib/Makefile, but the target never gets selected. Manually
 selecting the target after build, I ran into 2 problems:
 compatibility_version is only allowed with dynamiclib (not dynamic) and
 using libtool did not propagate all linker flags, use gcc to create
 dylibs.

 Diff of Portfile attached to solve problems and create libsatlas.dylib
 (non-threaded and libtatlas.dylib (threaded) in post-build.

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Ticket URL: <https://trac.macports.org/ticket/35683#comment:7>
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