Need Help Building PythonQt on Windows

[Michael Wieher]

2008/3/9, Jeff Schiller <codedread at gmail.com>:
>
> Hello,




I'm creating an application using Qt (4.4 Beta atm).  I have pretty
> close to zero experience with Python (consisting of installing the
> Python interpreter, downloading a python programming and executing it
> on the command-line).
>
> I would like to invoke a Python script from my C++ Qt program and
> capture its output as a C++ structure.  It seems that PythonQt might
> be suitable for my needs.
>
> Being a Qt program, I want this thing to be cross-platform.  I'm
> having trouble getting things set up in Windows.  Has anyone had any
> experience with this?
>
> I've built Qt from source using the mingw32 compiler.  I installed
> Python 2.5 binary.  I am trying to build PythonQt from source.  As per
> http://pythonqt.sourceforge.net/#Building it says I need a "developer
> installation" of Python containing the header files and  the library
> files.  When I look at my system after installing the Python 2.5
> binary, I can see I have header files (C:\Python25\include), a 199k
> python25.lib (C:\Python25\libs) and a 2MB python25.dll
> (C:\Windows\System32\).  Have I got what I need?
>
> I have tried to set up my symbols (PYTHON_PATH, PYTHON_LIB,
> PYTHONQT_ROOT).  I generate the Makefile (using qmake) and it starts
> to build but then it fails:
>
> g++ -enable-stdcall-fixup -Wl,-enable-auto-import
> -Wl,-enable-runtime-pseudo-reloc -mthreads -Wl -shared
> -Wl,--out-implib,lib\libPythonQt.a -o lib\PythonQt.dll
> object_script.PythonQt.Debug  -L"c:\Qt\4.4.0-beta1\lib"
> "c:\Python25\libs"/python25.lib -lQtGuid4 -lQtCored4
> ./debug\PythonQt.o: In function `ZN8PythonQtC2Ei':
> C:/PythonQt-1.0/src/PythonQt.cpp:118: undefined reference to
> `_imp__Py_NoSiteFlag'
> ./debug\PythonQt.o: In function `ZN8PythonQtC1Ei':
> C:/PythonQt-1.0/src/PythonQt.cpp:118: undefined reference to
> `_imp__Py_NoSiteFlag'
> ./debug\PythonQt.o: In function
> `ZN15PythonQtPrivate11wrapQObjectEP7QObject':
> C:/PythonQt-1.0/src/PythonQt.cpp:256: undefined reference to
> `_imp___Py_NoneStruct'
> C:/PythonQt-1.0/src/PythonQt.cpp:257: undefined reference to
> `_imp___Py_NoneStruct'
> ./debug\PythonQt.o: In function
> `ZN15PythonQtPrivate7wrapPtrEPvRK10QByteArray':
> C:/PythonQt-1.0/src/PythonQt.cpp:281: undefined reference to
> `_imp___Py_NoneStruct'
> C:/PythonQt-1.0/src/PythonQt.cpp:282: undefined reference to
> `_imp___Py_NoneStruct'
> ./debug\PythonQt.o: In function
> `ZN8PythonQt13introspectionEP7_objectRK7QStringNS_10ObjectTypeE':
> C:/PythonQt-1.0/src/PythonQt.cpp:620: undefined reference to
> `_imp__PyClass_Type'
> C:/PythonQt-1.0/src/PythonQt.cpp:625: undefined reference to
> `_imp__PyClass_Type'
> C:/PythonQt-1.0/src/PythonQt.cpp:625: undefined reference to
> `_imp__PyCFunction_Type'
> ...
>
> Since I'm new to compiling Qt with mingw and completely new to python,
> I was hoping for tips on why I'm getting these errors.  If anyone has
> a better suggestion for a forum/mailing list then please let me know.
>
> Thanks,
> Jeff
>
> --
> http://mail.python.org/mailman/listinfo/python-list



Another thing to be aware of, although this might not be something you need
to worry about, is that there are debug-versions of the python libraries
that are not installed by the MSI installer on windows.  Sadly, the only way
to get these libraries is to compile Python from source on your Windows
machine, being sure to also create the debug libraries at this time.  I
don't know if you need them or not, because the error message you got was
not entirely descriptive.

~mike
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