mirror of https://gitlab.com/ita1024/waf.git
548 lines
18 KiB
Python
548 lines
18 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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# Thomas Nagy, 2007-2010 (ita)
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# Gustavo Carneiro (gjc), 2007
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"""
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Support for Python, detect the headers and libraries and provide
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*use* variables to link C/C++ programs against them::
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def options(opt):
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opt.load('compiler_c python')
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def configure(conf):
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conf.load('compiler_c python')
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conf.check_python_version((2,4,2))
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conf.check_python_headers()
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def build(bld):
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bld.program(features='pyembed', source='a.c', target='myprog')
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bld.shlib(features='pyext', source='b.c', target='mylib')
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"""
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import os, sys
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from waflib import Utils, Options, Errors, Logs, Task, Node
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from waflib.TaskGen import extension, before_method, after_method, feature
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from waflib.Configure import conf
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FRAG = '''
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#include <Python.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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void Py_Initialize(void);
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void Py_Finalize(void);
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#ifdef __cplusplus
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}
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#endif
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int main(int argc, char **argv)
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{
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(void)argc; (void)argv;
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Py_Initialize();
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Py_Finalize();
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return 0;
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}
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'''
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"""
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Piece of C/C++ code used in :py:func:`waflib.Tools.python.check_python_headers`
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"""
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INST = '''
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import sys, py_compile
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py_compile.compile(sys.argv[1], sys.argv[2], sys.argv[3], True)
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'''
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"""
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Piece of Python code used in :py:func:`waflib.Tools.python.pytask` for byte-compiling python files
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"""
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DISTUTILS_IMP = ['from distutils.sysconfig import get_config_var, get_python_lib']
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@feature('py')
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def feature_py(self):
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"""
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Create tasks to byte-compile .py files and install them, if requested
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"""
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install_path = getattr (self, 'install_path', '${PYTHONDIR}')
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install_from = getattr (self, 'install_from', None)
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if install_from and not isinstance (install_from, Node.Node):
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install_from = self.path.find_dir (install_from)
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inputs = []
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for x in Utils.to_list (self.source):
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if isinstance (x, Node.Node):
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y = x
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else:
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y = self.path.find_resource (x)
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inputs.append (y)
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if install_path:
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if install_from:
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pyd = Utils.subst_vars ("%s/%s" % (install_path, y.path_from (install_from)), self.env)
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else:
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pyd = Utils.subst_vars ("%s/%s" % (install_path, y.path_from (self.path)), self.env)
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else:
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pyd = y.abspath ()
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for ext in ["pyc", "pyo"]:
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if install_from:
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pyobj = self.path.get_bld ().make_node (y
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.change_ext (".%s" % ext)
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.get_bld ()
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.path_from (install_from.get_bld ()))
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else:
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pyobj = self.path.get_bld ().make_node (y
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.change_ext (".%s" % ext)
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.name)
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pyobj.parent.mkdir ()
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tsk = self.create_task (ext, y, pyobj)
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tsk.pyd = pyd
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if install_path:
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self.bld.install_files (install_path, pyobj, cwd = self.path.get_bld (), relative_trick = True)
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if install_path:
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if install_from:
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self.bld.install_files (install_path, inputs, cwd = install_from, relative_trick = True)
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else:
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self.bld.install_files (install_path, inputs)
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@extension('.py')
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def process_py(self, node):
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"""
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Add signature of .py file, so it will be byte-compiled when necessary
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"""
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node.sig = Utils.h_file (node.abspath())
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class pyc (Task.Task):
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"""
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Byte-compiling python files
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"""
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color = 'PINK'
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def run(self):
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cmd = [Utils.subst_vars('${PYTHON}', self.env), '-c', INST, self.inputs[0].abspath(), self.outputs[0].abspath(), self.pyd]
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ret = self.generator.bld.exec_command(cmd)
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return ret
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class pyo (Task.Task):
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"""
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Byte-compiling python files
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"""
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color = 'PINK'
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def run(self):
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cmd = [Utils.subst_vars('${PYTHON}', self.env),
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Utils.subst_vars('${PYFLAGS_OPT}', self.env), '-c', INST, self.inputs[0].abspath(), self.outputs[0].abspath(), self.pyd]
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ret = self.generator.bld.exec_command(cmd)
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return ret
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@feature('pyext')
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@before_method('propagate_uselib_vars', 'apply_link')
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@after_method('apply_bundle')
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def init_pyext(self):
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"""
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Change the values of *cshlib_PATTERN* and *cxxshlib_PATTERN* to remove the
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*lib* prefix from library names.
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"""
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self.uselib = self.to_list(getattr(self, 'uselib', []))
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if not 'PYEXT' in self.uselib:
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self.uselib.append('PYEXT')
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# override shlib_PATTERN set by the osx module
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self.env.cshlib_PATTERN = self.env.cxxshlib_PATTERN = self.env.macbundle_PATTERN = self.env.pyext_PATTERN
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self.env.fcshlib_PATTERN = self.env.dshlib_PATTERN = self.env.pyext_PATTERN
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try:
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if not self.install_path:
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return
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except AttributeError:
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self.install_path = '${PYTHONARCHDIR}'
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@feature('pyext')
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@before_method('apply_link', 'apply_bundle')
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def set_bundle(self):
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if Utils.unversioned_sys_platform() == 'darwin':
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self.mac_bundle = True
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@before_method('propagate_uselib_vars')
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@feature('pyembed')
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def init_pyembed(self):
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"""
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Add the PYEMBED variable.
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"""
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self.uselib = self.to_list(getattr(self, 'uselib', []))
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if not 'PYEMBED' in self.uselib:
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self.uselib.append('PYEMBED')
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@conf
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def get_python_variables(self, variables, imports=None):
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"""
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Spawn a new python process to dump configuration variables
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:param variables: variables to print
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:type variables: list of string
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:param imports: one import by element
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:type imports: list of string
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:return: the variable values
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:rtype: list of string
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"""
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if not imports:
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try:
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imports = self.python_imports
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except AttributeError:
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imports = DISTUTILS_IMP
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program = list(imports) # copy
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program.append('')
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for v in variables:
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program.append("print(repr(%s))" % v)
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os_env = dict(os.environ)
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try:
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del os_env['MACOSX_DEPLOYMENT_TARGET'] # see comments in the OSX tool
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except KeyError:
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pass
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try:
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out = self.cmd_and_log(self.env.PYTHON + ['-c', '\n'.join(program)], env=os_env)
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except Errors.WafError:
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self.fatal('The distutils module is unusable: install "python-devel"?')
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self.to_log(out)
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return_values = []
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for s in out.split('\n'):
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s = s.strip()
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if not s:
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continue
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if s == 'None':
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return_values.append(None)
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elif (s[0] == "'" and s[-1] == "'") or (s[0] == '"' and s[-1] == '"'):
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return_values.append(eval(s))
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elif s[0].isdigit():
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return_values.append(int(s))
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else: break
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return return_values
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@conf
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def check_python_headers(conf):
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"""
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Check for headers and libraries necessary to extend or embed python by using the module *distutils*.
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On success the environment variables xxx_PYEXT and xxx_PYEMBED are added:
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* PYEXT: for compiling python extensions
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* PYEMBED: for embedding a python interpreter
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"""
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# FIXME rewrite
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env = conf.env
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if not env['CC_NAME'] and not env['CXX_NAME']:
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conf.fatal('load a compiler first (gcc, g++, ..)')
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if not env['PYTHON_VERSION']:
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conf.check_python_version()
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pybin = conf.env.PYTHON
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if not pybin:
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conf.fatal('Could not find the python executable')
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v = 'prefix SO LDFLAGS LIBDIR LIBPL INCLUDEPY Py_ENABLE_SHARED MACOSX_DEPLOYMENT_TARGET LDSHARED CFLAGS'.split()
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try:
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lst = conf.get_python_variables(["get_config_var('%s') or ''" % x for x in v])
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except RuntimeError:
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conf.fatal("Python development headers not found (-v for details).")
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vals = ['%s = %r' % (x, y) for (x, y) in zip(v, lst)]
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conf.to_log("Configuration returned from %r:\n%r\n" % (pybin, '\n'.join(vals)))
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dct = dict(zip(v, lst))
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x = 'MACOSX_DEPLOYMENT_TARGET'
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if dct[x]:
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conf.env[x] = conf.environ[x] = dct[x]
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env['pyext_PATTERN'] = '%s' + dct['SO'] # not a mistake
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# Check for python libraries for embedding
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all_flags = dct['LDFLAGS'] + ' ' + dct['CFLAGS']
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conf.parse_flags(all_flags, 'PYEMBED')
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all_flags = dct['LDFLAGS'] + ' ' + dct['LDSHARED'] + ' ' + dct['CFLAGS']
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conf.parse_flags(all_flags, 'PYEXT')
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result = None
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#name = 'python' + env['PYTHON_VERSION']
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# TODO simplify this
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for name in ('python' + env['PYTHON_VERSION'], 'python' + env['PYTHON_VERSION'] + 'm', 'python' + env['PYTHON_VERSION'].replace('.', '')):
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# LIBPATH_PYEMBED is already set; see if it works.
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if not result and env['LIBPATH_PYEMBED']:
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path = env['LIBPATH_PYEMBED']
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conf.to_log("\n\n# Trying default LIBPATH_PYEMBED: %r\n" % path)
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result = conf.check(lib=name, uselib='PYEMBED', libpath=path, mandatory=False, msg='Checking for library %s in LIBPATH_PYEMBED' % name)
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if not result and dct['LIBDIR']:
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path = [dct['LIBDIR']]
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conf.to_log("\n\n# try again with -L$python_LIBDIR: %r\n" % path)
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result = conf.check(lib=name, uselib='PYEMBED', libpath=path, mandatory=False, msg='Checking for library %s in LIBDIR' % name)
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if not result and dct['LIBPL']:
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path = [dct['LIBPL']]
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conf.to_log("\n\n# try again with -L$python_LIBPL (some systems don't install the python library in $prefix/lib)\n")
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result = conf.check(lib=name, uselib='PYEMBED', libpath=path, mandatory=False, msg='Checking for library %s in python_LIBPL' % name)
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if not result:
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path = [os.path.join(dct['prefix'], "libs")]
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conf.to_log("\n\n# try again with -L$prefix/libs, and pythonXY name rather than pythonX.Y (win32)\n")
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result = conf.check(lib=name, uselib='PYEMBED', libpath=path, mandatory=False, msg='Checking for library %s in $prefix/libs' % name)
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if result:
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break # do not forget to set LIBPATH_PYEMBED
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if result:
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env['LIBPATH_PYEMBED'] = path
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env.append_value('LIB_PYEMBED', [name])
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else:
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conf.to_log("\n\n### LIB NOT FOUND\n")
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# under certain conditions, python extensions must link to
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# python libraries, not just python embedding programs.
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if (Utils.is_win32 or sys.platform.startswith('os2')
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or dct['Py_ENABLE_SHARED']):
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env['LIBPATH_PYEXT'] = env['LIBPATH_PYEMBED']
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env['LIB_PYEXT'] = env['LIB_PYEMBED']
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# We check that pythonX.Y-config exists, and if it exists we
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# use it to get only the includes, else fall back to distutils.
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num = '.'.join(env['PYTHON_VERSION'].split('.')[:2])
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conf.find_program([''.join(pybin) + '-config', 'python%s-config' % num, 'python-config-%s' % num, 'python%sm-config' % num], var='PYTHON_CONFIG', msg="python-config", mandatory=False)
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includes = []
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if conf.env.PYTHON_CONFIG:
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for incstr in conf.cmd_and_log(conf.env.PYTHON_CONFIG + ['--includes']).strip().split():
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# strip the -I or /I
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if (incstr.startswith('-I') or incstr.startswith('/I')):
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incstr = incstr[2:]
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# append include path, unless already given
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if incstr not in includes:
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includes.append(incstr)
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conf.to_log("Include path for Python extensions (found via python-config --includes): %r\n" % (includes,))
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env['INCLUDES_PYEXT'] = includes
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env['INCLUDES_PYEMBED'] = includes
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else:
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conf.to_log("Include path for Python extensions "
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"(found via distutils module): %r\n" % (dct['INCLUDEPY'],))
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env['INCLUDES_PYEXT'] = [dct['INCLUDEPY']]
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env['INCLUDES_PYEMBED'] = [dct['INCLUDEPY']]
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# Code using the Python API needs to be compiled with -fno-strict-aliasing
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if env['CC_NAME'] == 'gcc':
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env.append_value('CFLAGS_PYEMBED', ['-fno-strict-aliasing'])
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env.append_value('CFLAGS_PYEXT', ['-fno-strict-aliasing'])
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if env['CXX_NAME'] == 'gcc':
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env.append_value('CXXFLAGS_PYEMBED', ['-fno-strict-aliasing'])
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env.append_value('CXXFLAGS_PYEXT', ['-fno-strict-aliasing'])
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if env.CC_NAME == "msvc":
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from distutils.msvccompiler import MSVCCompiler
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dist_compiler = MSVCCompiler()
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dist_compiler.initialize()
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env.append_value('CFLAGS_PYEXT', dist_compiler.compile_options)
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env.append_value('CXXFLAGS_PYEXT', dist_compiler.compile_options)
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env.append_value('LINKFLAGS_PYEXT', dist_compiler.ldflags_shared)
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# See if it compiles
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try:
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conf.check(header_name='Python.h', define_name='HAVE_PYTHON_H',
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uselib='PYEMBED', fragment=FRAG,
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errmsg=':-(')
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except conf.errors.ConfigurationError:
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# python3.2, oh yeah
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xx = conf.env.CXX_NAME and 'cxx' or 'c'
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flags = ['--cflags', '--libs', '--ldflags']
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for f in flags:
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conf.check_cfg(msg='Asking python-config for pyembed %s flags' % f,
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path=conf.env.PYTHON_CONFIG, package='', uselib_store='PYEMBED', args=[f])
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conf.check(header_name='Python.h', define_name='HAVE_PYTHON_H', msg='Getting pyembed flags from python-config',
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fragment=FRAG, errmsg='Could not build a python embedded interpreter',
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features='%s %sprogram pyembed' % (xx, xx))
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for f in flags:
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conf.check_cfg(msg='Asking python-config for pyext %s flags' % f,
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path=conf.env.PYTHON_CONFIG, package='', uselib_store='PYEXT', args=[f])
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conf.check(header_name='Python.h', define_name='HAVE_PYTHON_H', msg='Getting pyext flags from python-config',
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features='%s %sshlib pyext' % (xx, xx), fragment=FRAG, errmsg='Could not build python extensions')
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@conf
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def check_python_version(conf, minver=None):
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"""
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Check if the python interpreter is found matching a given minimum version.
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minver should be a tuple, eg. to check for python >= 2.4.2 pass (2,4,2) as minver.
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If successful, PYTHON_VERSION is defined as 'MAJOR.MINOR'
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(eg. '2.4') of the actual python version found, and PYTHONDIR is
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defined, pointing to the site-packages directory appropriate for
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this python version, where modules/packages/extensions should be
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installed.
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:param minver: minimum version
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:type minver: tuple of int
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"""
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assert minver is None or isinstance(minver, tuple)
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pybin = conf.env['PYTHON']
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if not pybin:
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conf.fatal('could not find the python executable')
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# Get python version string
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cmd = pybin + ['-c', 'import sys\nfor x in sys.version_info: print(str(x))']
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Logs.debug('python: Running python command %r' % cmd)
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lines = conf.cmd_and_log(cmd).split()
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assert len(lines) == 5, "found %i lines, expected 5: %r" % (len(lines), lines)
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pyver_tuple = (int(lines[0]), int(lines[1]), int(lines[2]), lines[3], int(lines[4]))
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# compare python version with the minimum required
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result = (minver is None) or (pyver_tuple >= minver)
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if result:
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# define useful environment variables
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pyver = '.'.join([str(x) for x in pyver_tuple[:2]])
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conf.env['PYTHON_VERSION'] = pyver
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if 'PYTHONDIR' in conf.env:
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# Check if --pythondir was specified
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pydir = conf.env['PYTHONDIR']
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elif 'PYTHONDIR' in conf.environ:
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# Check environment for PYTHONDIR
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pydir = conf.environ['PYTHONDIR']
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else:
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# Finally, try to guess
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if Utils.is_win32:
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(python_LIBDEST, pydir) = conf.get_python_variables(
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["get_config_var('LIBDEST') or ''",
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"get_python_lib(standard_lib=0) or ''"])
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else:
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python_LIBDEST = None
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(pydir,) = conf.get_python_variables( ["get_python_lib(standard_lib=0) or ''"])
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if python_LIBDEST is None:
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if conf.env['LIBDIR']:
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python_LIBDEST = os.path.join(conf.env['LIBDIR'], "python" + pyver)
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else:
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python_LIBDEST = os.path.join(conf.env['PREFIX'], "lib", "python" + pyver)
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if 'PYTHONARCHDIR' in conf.env:
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# Check if --pythonarchdir was specified
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pyarchdir = conf.env['PYTHONARCHDIR']
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elif 'PYTHONARCHDIR' in conf.environ:
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# Check environment for PYTHONDIR
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pyarchdir = conf.environ['PYTHONARCHDIR']
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else:
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# Finally, try to guess
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(pyarchdir, ) = conf.get_python_variables( ["get_python_lib(plat_specific=1, standard_lib=0) or ''"])
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if not pyarchdir:
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pyarchdir = pydir
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if hasattr(conf, 'define'): # conf.define is added by the C tool, so may not exist
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conf.define('PYTHONDIR', pydir)
|
|
conf.define('PYTHONARCHDIR', pyarchdir)
|
|
|
|
conf.env['PYTHONDIR'] = pydir
|
|
conf.env['PYTHONARCHDIR'] = pyarchdir
|
|
|
|
# Feedback
|
|
pyver_full = '.'.join(map(str, pyver_tuple[:3]))
|
|
if minver is None:
|
|
conf.msg('Checking for python version', pyver_full)
|
|
else:
|
|
minver_str = '.'.join(map(str, minver))
|
|
conf.msg('Checking for python version', pyver_tuple, ">= %s" % (minver_str,) and 'GREEN' or 'YELLOW')
|
|
|
|
if not result:
|
|
conf.fatal('The python version is too old, expecting %r' % (minver,))
|
|
|
|
PYTHON_MODULE_TEMPLATE = '''
|
|
import %s as current_module
|
|
version = getattr(current_module, '__version__', None)
|
|
if version is not None:
|
|
print(str(version))
|
|
else:
|
|
print('unknown version')
|
|
'''
|
|
|
|
@conf
|
|
def check_python_module(conf, module_name, condition=''):
|
|
"""
|
|
Check if the selected python interpreter can import the given python module::
|
|
|
|
def configure(conf):
|
|
conf.check_python_module('pygccxml')
|
|
conf.check_python_module('re', condition="ver > num(2, 0, 4) and ver <= num(3, 0, 0)")
|
|
|
|
:param module_name: module
|
|
:type module_name: string
|
|
"""
|
|
msg = "Checking for python module '%s'" % module_name
|
|
if condition:
|
|
msg = '%s (%s)' % (msg, condition)
|
|
conf.start_msg(msg)
|
|
try:
|
|
ret = conf.cmd_and_log(conf.env['PYTHON'] + ['-c', PYTHON_MODULE_TEMPLATE % module_name])
|
|
except Exception:
|
|
conf.end_msg(False)
|
|
conf.fatal('Could not find the python module %r' % module_name)
|
|
|
|
ret = ret.strip()
|
|
if condition:
|
|
conf.end_msg(ret)
|
|
if ret == 'unknown version':
|
|
conf.fatal('Could not check the %s version' % module_name)
|
|
|
|
from distutils.version import LooseVersion
|
|
def num(*k):
|
|
if isinstance(k[0], int):
|
|
return LooseVersion('.'.join([str(x) for x in k]))
|
|
else:
|
|
return LooseVersion(k[0])
|
|
d = {'num': num, 'ver': LooseVersion(ret)}
|
|
ev = eval(condition, {}, d)
|
|
if not ev:
|
|
conf.fatal('The %s version does not satisfy the requirements' % module_name)
|
|
else:
|
|
if ret == 'unknown version':
|
|
conf.end_msg(True)
|
|
else:
|
|
conf.end_msg(ret)
|
|
|
|
def configure(conf):
|
|
"""
|
|
Detect the python interpreter
|
|
"""
|
|
v = conf.env
|
|
v['PYTHON'] = Options.options.python or os.environ.get('PYTHON', sys.executable)
|
|
if Options.options.pythondir:
|
|
v['PYTHONDIR'] = Options.options.pythondir
|
|
if Options.options.pythonarchdir:
|
|
v['PYTHONARCHDIR'] = Options.options.pythonarchdir
|
|
|
|
conf.find_program('python', var='PYTHON')
|
|
|
|
v['PYCMD'] = '"import sys, py_compile;py_compile.compile(sys.argv[1], sys.argv[2])"'
|
|
v['PYFLAGS'] = ''
|
|
v['PYFLAGS_OPT'] = '-O'
|
|
|
|
v['PYC'] = getattr(Options.options, 'pyc', 1)
|
|
v['PYO'] = getattr(Options.options, 'pyo', 1)
|
|
|
|
def options(opt):
|
|
"""
|
|
Add python-specific options
|
|
"""
|
|
pyopt=opt.add_option_group("Python Options")
|
|
pyopt.add_option('--nopyc', dest = 'pyc', action='store_false', default=1,
|
|
help = 'Do not install bytecode compiled .pyc files (configuration) [Default:install]')
|
|
pyopt.add_option('--nopyo', dest='pyo', action='store_false', default=1,
|
|
help='Do not install optimised compiled .pyo files (configuration) [Default:install]')
|
|
pyopt.add_option('--python', dest="python",
|
|
help='python binary to be used [Default: %s]' % sys.executable)
|
|
pyopt.add_option('--pythondir', dest='pythondir',
|
|
help='Installation path for python modules (py, platform-independent .py and .pyc files)')
|
|
pyopt.add_option('--pythonarchdir', dest='pythonarchdir',
|
|
help='Installation path for python extension (pyext, platform-dependent .so or .dylib files)')
|