PythonEval.cc: ‘PyString_AsString’ was not declared in this scope

[Karl Sackett]

Debian Linux 7.0
OpenCog revision 7652
Cython 0.17.1

Scanning dependencies of target PythonEval
[ 61%] Building CXX object opencog/cython/CMakeFiles/PythonEval.dir/PythonEval.cc.o
/home/krs/src/opencog/opencog/cython/PythonEval.cc: In member function ‘void opencog::PythonEval::printDict(PyObject*)’:
/home/krs/src/opencog/opencog/cython/PythonEval.cc:164:43: error: ‘PyString_AsString’ was not declared in this scope
make[2]: *** [opencog/cython/CMakeFiles/PythonEval.dir/PythonEval.cc.o] Error 1
make[1]: *** [opencog/cython/CMakeFiles/PythonEval.dir/all] Error 2
make: *** [all] Error 2

[Karl Sackett (karlsackett)]

I was looking through the output from cmake and I saw these lines:

-- Found PythonInterp: /usr/bin/python (found version "2.7.3")
-- Found PythonLibs: /usr/lib/libpython3.2mu.so (found version "3.2.3")
-- Python libs found.

In Debian Linux the default Python is 2.7.3, but somehow CMake was pulling in
libpython3.2mu.so instead of libpython2.7.so.1.0. When I removed the libpython3.2
package the problem went away. The build failed apparently because of the version
mismatch between python and libpython.

[Ehab (ehabnoreddin)]

Try this : https://github.com/opencog/opencog/issues/48#issuecomment-19075662