gstreamer/pythondetector

#!/usr/bin/env python3
import os
import platform
import subprocess
import sys

from distutils import sysconfig


def get_python_abiflags():
    try:
        return subprocess.check_output([os.path.basename(sys.executable) + '-config',
                                        '--abiflags']).decode(errors='ignore').strip()
    except FileNotFoundError:
        return ''


def get_python_libloc():
    # OSX is a pain. Python as shipped by apple installs libpython in /usr/lib
    # so we hardcode that. Other systems can use --with-libpython-dir to
    # override this.
    if platform.system().lower() == 'darwin':
        return '/usr/lib'

    python_libs = sysconfig.get_python_lib(standard_lib=1)
    pylib_loc = python_libs + '/config'
    pyversion = "%d.%d" % (sys.version_info.major, sys.version_info.minor)

    abiflags = get_python_abiflags()
    py_sharedlib = pylib_loc + '/libpython' + pyversion + abiflags + '.so'
    if os.path.exists(os.path.join(py_sharedlib)):
        return pylib_loc

    pylib_loc = sys.prefix + '/lib64'
    py_sharedlib = pylib_loc + '/libpython' + pyversion + abiflags + '.so'

    if os.path.exists(os.path.join(py_sharedlib)):
        return pylib_loc

    pylib_loc = sys.prefix + '/lib'
    py_sharedlib = pylib_loc + '/libpython' + pyversion + abiflags + '.so'
    if os.path.exists(os.path.join(py_sharedlib)):
        return pylib_loc

    libdir = 'lib64' if os.path.isdir('/usr/lib64') else 'lib'
    pylib_loc = '/usr/' + libdir
    py_sharedlib = pylib_loc + '/libpython' + pyversion + abiflags + '.so'
    if os.path.exists(os.path.join(py_sharedlib)):
        return pylib_loc

    return "None"


if __name__ == "__main__":
    if len(sys.argv) > 2:
        print("Only 1 argument accepted")
        exit(1)

    if sys.argv[1] == '--abiflags':
        print(get_python_abiflags())
    elif sys.argv[1] == '--sosuffix':
        get = sysconfig.get_config_var
        suffix = get("EXT_SUFFIX") or get("SO") or ".so"
        print(suffix[1:])
    elif sys.argv[1] == '--pygi-overridedir':
        import gi
        print(gi._overridesdir)
    elif sys.argv[1] == '--libloc':
        print(get_python_libloc())