Class PythonFlags

pipcl.py:2488–2592

Compile/link flags for the current python, for example the include path needed to get `Python.h`. The 'PIPCL_PYTHON_CONFIG' environment variable allows to override the location of the python-config executable. Members: .includes: String containing compiler

class PythonFlags:
    '''
    Compile/link flags for the current python, for example the include path
    needed to get `Python.h`.

    The 'PIPCL_PYTHON_CONFIG' environment variable allows to override
    the location of the python-config executable.

    Members:
        .includes:
            String containing compiler flags for include paths.
        .ldflags:
            String containing linker flags for library paths.
    '''
    def __init__(self):
        
        # Experimental detection of python flags from sysconfig.*() instead of
        # python-config command.
        includes_, ldflags_ = sysconfig_python_flags()
      
        if pyodide():
            _include_dir = os.environ[ 'PYO3_CROSS_INCLUDE_DIR']
            _lib_dir = os.environ[ 'PYO3_CROSS_LIB_DIR']
            self.includes = f'-I {_include_dir}'
            self.ldflags = f'-L {_lib_dir}'

        elif 0:

            self.includes = includes_
            self.ldflags = ldflags_
        
        elif windows():
            wp = wdev.WindowsPython()
            self.includes = f'/I"{wp.include}"'
            self.ldflags = f'/LIBPATH:"{wp.libs}"'

        elif pyodide():
            _include_dir = os.environ[ 'PYO3_CROSS_INCLUDE_DIR']
            _lib_dir = os.environ[ 'PYO3_CROSS_LIB_DIR']
            self.includes = f'-I {_include_dir}'
            self.ldflags = f'-L {_lib_dir}'

        else:
            python_config = os.environ.get("PIPCL_PYTHON_CONFIG")
            if not python_config:
                # We use python-config which appears to work better than pkg-config
                # because it copes with multiple installed python's, e.g.
                # manylinux_2014's /opt/python/cp*-cp*/bin/python*.
                #
                # But... on non-macos it seems that we should not attempt to specify
                # libpython on the link command. The manylinux docker containers
                # don't actually contain libpython.so, and it seems that this
                # deliberate. And the link command runs ok.
                #
                python_exe = os.path.realpath( sys.executable)
                if darwin():
                    # Basic install of dev tools with `xcode-select --install` doesn't
                    # seem to provide a `python3-config` or similar, but there is a