New subject: [MacPorts] #39223: incorrect flags from distutils when linking against python27 @2.7.5_0

24 May 2013

      #39223: incorrect flags from distutils when linking against python27 @2.7.5_0
--------------------+----------------------
 Reporter:  ram@…   |      Owner:  jwa@…
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.1.3
 Keywords:          |       Port:  python27
--------------------+----------------------
 I've been having some problems build some software against python27
 @2.7.5_0:

 {{{
 checking for a Python interpreter with version >= 2.6... python
 checking for python... /opt/local/bin/python
 checking for python version... 2.7
 checking for python platform... darwin
 checking for python script directory... ${prefix}/lib/python2.7/site-
 packages
 checking for python extension module directory...
 ${exec_prefix}/lib/python2.7/site-packages
 checking for python2.7... (cached) /opt/local/bin/python
 checking for a version of Python >= '2.1.0'... yes
 checking for the distutils Python package... yes
 checking for Python include path...
 -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
 checking for Python library path...
 -L/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/config
 -lpython2.7
 checking for Python site-packages path...
 /opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
 /site-packages
 checking python extra libraries...  -ldl  -framework CoreFoundation
 checking python extra linking flags... -u _PyMac_Error
 Python.framework/Versions/2.7/Python
 checking consistency of all components of python development
 environment... no
 configure: error: in `/Users/ram/git/lalsuite/lalburst':
 configure: error:
   Could not link test program to Python. Maybe the main Python library has
 been
   installed in some non-standard library path. If so, pass it to
 configure,
   via the LDFLAGS environment variable.
   Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib"
 ============================================================================
    ERROR!
    You probably have to install the development version of the Python
 package
    for your distribution.  The exact name of this package varies among
 them.
 ============================================================================

 See `config.log' for more details
 }}}

 This seems to be due to distutils reporting incorrectly the flags required
 to link against python. With @2.7.5_0:

 {{{
 Python 2.7.5 (default, May 24 2013, 11:10:07)
 [GCC 4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.28)] on darwin
 Type "help", "copyright", "credits" or "license" for more information.
...
...
...
import distutils.sysconfig
conf = distutils.sysconfig.get_config_var
print (conf('LINKFORSHARED'))
 -u _PyMac_Error Python.framework/Versions/2.7/Python
}}}
i.e. it looks like the path is incomplete. Whereas if I revert back to
 @2.7.3_1 I get what I would expect:

 {{{
 Python 2.7.3 (default, Nov 26 2012, 15:06:55)
 [GCC 4.2.1 Compatible Apple Clang 4.1 ((tags/Apple/clang-421.11.66))] on
 darwin
 Type "help", "copyright", "credits" or "license" for more information.
...
...
...
import distutils.sysconfig
conf = distutils.sysconfig.get_config_var
print (conf('LINKFORSHARED'))
 -u _PyMac_Error
 /opt/local/Library/Frameworks/Python.framework/Versions/2.7/Python
}}}
-- 
Ticket URL: <https://trac.macports.org/ticket/39223>
MacPorts <http://www.macports.org/>
Ports system for OS X

[MacPorts] #39223: incorrect flags from distutils when linking against python27 @2.7.5_0

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