diff options
Diffstat (limited to 'mesonbuild/scripts/python_info.py')
-rwxr-xr-x | mesonbuild/scripts/python_info.py | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/mesonbuild/scripts/python_info.py b/mesonbuild/scripts/python_info.py new file mode 100755 index 0000000..a851356 --- /dev/null +++ b/mesonbuild/scripts/python_info.py @@ -0,0 +1,75 @@ +#!/usr/bin/env python + +# ignore all lints for this file, since it is run by python2 as well + +# type: ignore +# pylint: disable=deprecated-module + +import os.path +import sysconfig +import json +import sys +import distutils.command.install + +def get_distutils_paths(scheme=None, prefix=None): + import distutils.dist + distribution = distutils.dist.Distribution() + install_cmd = distribution.get_command_obj('install') + if prefix is not None: + install_cmd.prefix = prefix + if scheme: + install_cmd.select_scheme(scheme) + install_cmd.finalize_options() + return { + 'data': install_cmd.install_data, + 'include': os.path.dirname(install_cmd.install_headers), + 'platlib': install_cmd.install_platlib, + 'purelib': install_cmd.install_purelib, + 'scripts': install_cmd.install_scripts, + } + +# On Debian derivatives, the Python interpreter shipped by the distribution uses +# a custom install scheme, deb_system, for the system install, and changes the +# default scheme to a custom one pointing to /usr/local and replacing +# site-packages with dist-packages. +# See https://github.com/mesonbuild/meson/issues/8739. +# XXX: We should be using sysconfig, but Debian only patches distutils. + +if 'deb_system' in distutils.command.install.INSTALL_SCHEMES: + paths = get_distutils_paths(scheme='deb_system') + install_paths = get_distutils_paths(scheme='deb_system', prefix='') +else: + paths = sysconfig.get_paths() + empty_vars = {'base': '', 'platbase': '', 'installed_base': ''} + install_paths = sysconfig.get_paths(vars=empty_vars) + +def links_against_libpython(): + from distutils.core import Distribution, Extension + cmd = Distribution().get_command_obj('build_ext') + cmd.ensure_finalized() + return bool(cmd.get_libraries(Extension('dummy', []))) + +variables = sysconfig.get_config_vars() +variables.update({'base_prefix': getattr(sys, 'base_prefix', sys.prefix)}) + +if sys.version_info < (3, 0): + suffix = variables.get('SO') +elif sys.version_info < (3, 8, 7): + # https://bugs.python.org/issue?@action=redirect&bpo=39825 + from distutils.sysconfig import get_config_var + suffix = get_config_var('EXT_SUFFIX') +else: + suffix = variables.get('EXT_SUFFIX') + +print(json.dumps({ + 'variables': variables, + 'paths': paths, + 'sysconfig_paths': sysconfig.get_paths(), + 'install_paths': install_paths, + 'version': sysconfig.get_python_version(), + 'platform': sysconfig.get_platform(), + 'is_pypy': '__pypy__' in sys.builtin_module_names, + 'is_venv': sys.prefix != variables['base_prefix'], + 'link_libpython': links_against_libpython(), + 'suffix': suffix, +})) |