Ubuntu - Linking boost.python - Fatal error: pyconfig cannot be found

Question

Having some issues, now I have read the following:

hello world python extension in c++ using boost?

I have tried installing boost onto my desktop, and, done

Answer 1

If you have a .c file (hello.c) and you want to build an libhello.so library, try:

find /usr/include -name pyconfig.h

[out]:

/usr/include/python2.7/pyconfig.h
/usr/include/x86_64-linux-gnu/python2.7/pyconfig.h

then use the output and do:

gcc -shared -o libhello.so -fPIC hello.c -I /usr/include/python2.7/

If you're converting from cython's .pyx to .so, try this python module, it will automatically build the .so file given the .pyx file:

def pythonizing_cython(pyxfile):
    import os
    # Creates ssetup_pyx.py file.
    setup_py = "\n".join(["from distutils.core import setup",
                          "from Cython.Build import cythonize",
                          "setup(ext_modules = cythonize('"+\
                          pyxfile+".pyx'))"])   

    with open('setup_pyx.py', 'w') as fout:
        fout.write(setup_py)

    # Compiles the .c file from .pyx file.
    os.system('python setup_pyx.py build_ext --inplace')

    # Finds the pyconfig.h file.
    pyconfig = os.popen('find /usr/include -name pyconfig.h'\
                        ).readline().rpartition('/')[0]

    # Builds the .so file.
    cmd = " ".join(["gcc -shared -o", pyxfile+".so",
                    "-fPIC", pyxfile+".c",
                    "-I", pyconfig])
    os.system(cmd)

    # Removing temporary .c and setup_pyx.py files.
    os.remove('setup_pyx.py')
    os.remove(pyxfile+'.c')