[MacPorts] #33747: py27-readline @6.2.2 build failure

[MacPorts]

#33747: py27-readline @6.2.2 build failure
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 Reporter:  GuillaumeBOUERAT@…          |       Owner:  macports-tickets@…                   
     Type:  defect                      |      Status:  new                                  
 Priority:  Normal                      |   Milestone:                                       
Component:  ports                       |     Version:  2.0.4                                
 Keywords:                              |        Port:  py27-readline                        
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Comment(by nad@…):

 The problem is building the Python extension module which uses Python's
 distutils.  It looks like MacPorts overrode the CC environment variable
 but that's not enough for Python framework builds; LDSHARED must be
 overridden as well (see [http://bugs.python.org/issue13590#msg152803]).
 What probably happened here is that the OP originally installed python27
 with Xcode 4.2 was installed when clang was in /Developer/usr/bin.  Python
 installs remember the absolute path of the C compiler used to build
 themselves for use later by Distutils when installing packages with C
 extension modules.  If the path to the compiler changes, as happened with
 Xcode 4.3 (where /Developer was removed), subsequent Python package
 installs will fail.   The easiest way to fix the problem is to force
 reinstalling Python, e.g.
 {{{
 port -n upgrade --force python27
 }}}
 which will rebuild Python and record the current compiler path.  This
 probably should go into the ProblemHostList as users will likely run into
 this with other Python packages that include C extension modules.

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Ticket URL: <https://trac.macports.org/ticket/33747#comment:2>
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