[MacPorts] #21444: boost with +python26 links against wrong python on Snow Leopard

[MacPorts]

#21444: boost with +python26 links against wrong python on Snow Leopard
---------------------------------+------------------------------------------
  Reporter:  stromnov@…          |       Owner:  nox@…           
      Type:  defect              |      Status:  closed          
  Priority:  Normal              |   Milestone:                  
 Component:  ports               |     Version:  1.8.0           
Resolution:  worksforme          |    Keywords:                  
      Port:  boost               |  
---------------------------------+------------------------------------------

Comment(by stromnov@…):

 1. python2.6 framework broken in macports (please, read #21824)
  2. we need explicitly pass -F${prefix}/Library/Frameworks to compiler for
 proper linking with macport frameworks (as mentioned earlier by dbsgeo@)
  3. linking must be done against framework or library, but (preferably)
 not against both at the same time:

 Compiling:
 {{{
 stromnov at stromnov:~$ gcc -Z -F/opt/local/Library/Frameworks
 `python2.6-config --cflags` `python2.6-config --ldflags` -framework Python
 test.c
 stromnov at stromnov:~$ otool -L a.out a.out:
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 124.1.1)
         /System/Library/Frameworks/Python.framework/Versions/2.6/Python
 (compatibility version 2.6.0, current version 2.6.1)
         /opt/local/Library/Frameworks/Python.framework/Versions/2.6/Python
 (compatibility version 2.6.0, current version 2.6.0)
 }}}

 Double link (to system and macports pythons) caused by -lpython2.6 in
 `python2.6-config --ldflags` and absence of -L/opt/local/lib in args.

 {{{
 stromnov at stromnov:~$ gcc -Z -F/opt/local/Library/Frameworks
 -L/opt/local/lib `python2.6-config --cflags` `python2.6-config --ldflags`
 -framework Python test.c
 stromnov at stromnov:~$ otool -L a.out a.out:
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 124.1.1)
         /opt/local/Library/Frameworks/Python.framework/Versions/2.6/Python
 (compatibility version 2.6.0, current version 2.6.0)
 }}}

-- 
Ticket URL: <http://trac.macports.org/ticket/21444#comment:25>
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