Merge https://github.com/markflorisson88/cython

Cython/Compiler/CmdLine.py

@@ -2,6 +2,7 @@
 #   Cython - Command Line Parsing
 #
 
+import os
 import sys
 import Options
 
@@ -27,6 +28,7 @@ Options:
                                  Level indicates aggressiveness, default 0 releases nothing. 
   -w, --working <directory>      Sets the working directory for Cython (the directory modules 
                                  are searched from)
+  --gdb                          Output debug information for cygdb
 
   -D, --no-docstrings            Remove docstrings.
   -a, --annotate                 Produce a colorized HTML version of the source.
@@ -114,6 +116,9 @@ def parse_command_line(args):
                 Options.convert_range = True
             elif option == "--line-directives":
                 options.emit_linenums = True
+            elif option == "--gdb":
+                options.gdb_debug = True
+                options.output_dir = os.curdir
             elif option == '-2':
                 options.language_level = 2
             elif option == '-3':

Cython/Compiler/Code.py

@@ -916,6 +916,14 @@ class CCodeWriter(object):
         return self.buffer.getvalue()
 
     def write(self, s):
+        # also put invalid markers (lineno 0), to indicate that those lines 
+        # have no Cython source code correspondence
+        if self.marker is None:
+            cython_lineno = self.last_marker_line
+        else:
+            cython_lineno = self.marker[0]
+        
+        self.buffer.markers.extend([cython_lineno] * s.count('\n'))
         self.buffer.write(s)
 
     def insertion_point(self):
@@ -1000,6 +1008,7 @@ class CCodeWriter(object):
             self.emit_marker()
         if self.emit_linenums and self.last_marker_line != 0:
             self.write('\n#line %s "%s"\n' % (self.last_marker_line, self.source_desc))
+        
         if code:
             if safe:
                 self.put_safe(code)

Cython/Compiler/Errors.py

@@ -97,6 +97,10 @@ class CompilerCrash(CompileError):
             message += u'%s: %s' % (cause.__class__.__name__, cause)
         CompileError.__init__(self, pos, message)
 
+class NoElementTreeInstalledException(PyrexError):
+    """raised when the user enabled options.gdb_debug but no ElementTree 
+    implementation was found
+    """
 
 listing_file = None
 num_errors = 0

Cython/Compiler/Main.py

@@ -13,7 +13,9 @@ except NameError:
     # Python 2.3
     from sets import Set as set
 
+import itertools
 from time import time
+
 import Code
 import Errors
 import Parsing
@@ -85,6 +87,8 @@ class Context(object):
 
         self.set_language_level(language_level)
         
+        self.gdb_debug_outputwriter = None
+
     def set_language_level(self, level):
         self.language_level = level
         if level >= 3:
@@ -178,13 +182,22 @@ class Context(object):
             from Cython.TestUtils import TreeAssertVisitor
             test_support.append(TreeAssertVisitor())
 
-        return ([
-                create_parse(self),
-            ] + self.create_pipeline(pxd=False, py=py) + test_support + [
-                inject_pxd_code,
-                abort_on_errors,
-                generate_pyx_code,
-            ])
+        if options.gdb_debug:
+            from Cython.Debugger import DebugWriter
+            from ParseTreeTransforms import DebugTransform
+            self.gdb_debug_outputwriter = DebugWriter.CythonDebugWriter(
+                options.output_dir)
+            debug_transform = [DebugTransform(self, options, result)]
+        else:
+            debug_transform = []
+            
+        return list(itertools.chain(
+            [create_parse(self)],
+            self.create_pipeline(pxd=False, py=py),
+            test_support,
+            [inject_pxd_code, abort_on_errors],
+            debug_transform,
+            [generate_pyx_code]))
 
     def create_pxd_pipeline(self, scope, module_name):
         def parse_pxd(source_desc):
@@ -807,4 +820,5 @@ default_options = dict(
     evaluate_tree_assertions = False,
     emit_linenums = False,
     language_level = 2,
+    gdb_debug = False,
 )

Cython/Compiler/ModuleNode.py

@@ -297,12 +297,34 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         
         f = open_new_file(result.c_file)
         rootwriter.copyto(f)
+        if options.gdb_debug:
+            self._serialize_lineno_map(env, rootwriter)
         f.close()
         result.c_file_generated = 1
         if Options.annotate or options.annotate:
             self.annotate(rootwriter)
             rootwriter.save_annotation(result.main_source_file, result.c_file)
     
+    def _serialize_lineno_map(self, env, ccodewriter):
+        tb = env.context.gdb_debug_outputwriter
+        markers = ccodewriter.buffer.allmarkers()
+        
+        d = {}
+        for c_lineno, cython_lineno in enumerate(markers): 
+            if cython_lineno > 0:
+                d.setdefault(cython_lineno, []).append(c_lineno + 1)
+        
+        tb.start('LineNumberMapping')
+        for cython_lineno, c_linenos in sorted(d.iteritems()):
+                attrs = {
+                    'c_linenos': ' '.join(map(str, c_linenos)),
+                    'cython_lineno': str(cython_lineno),
+                }
+                tb.start('LineNumber', attrs)
+                tb.end('LineNumber')
+        tb.end('LineNumberMapping')
+        tb.serialize()
+        
     def find_referenced_modules(self, env, module_list, modules_seen):
         if env not in modules_seen:
             modules_seen[env] = 1

Cython/Compiler/ParseTreeTransforms.py

@@ -20,6 +20,12 @@ from Cython.Compiler.TreeFragment import TreeFragment, TemplateTransform
 from Cython.Compiler.StringEncoding import EncodedString
 from Cython.Compiler.Errors import error, warning, CompileError, InternalError
 
+
+try:
+    set
+except NameError:
+    from sets import Set as set
+
 import copy
 
 
@@ -1574,3 +1580,136 @@ class TransformBuiltinMethods(EnvTransform):
         
         self.visitchildren(node)
         return node
+
+
+class DebugTransform(CythonTransform):
+    """
+    Create debug information and all functions' visibility to extern in order
+    to enable debugging.
+    """
+    
+    def __init__(self, context, options, result):
+        super(DebugTransform, self).__init__(context)
+        self.visited = set()
+        # our treebuilder and debug output writer 
+        # (see Cython.Debugger.debug_output.CythonDebugWriter)
+        self.tb = self.context.gdb_debug_outputwriter
+        #self.c_output_file = options.output_file 
+        self.c_output_file = result.c_file
+        
+        # tells visit_NameNode whether it should register step-into functions
+        self.register_stepinto = False
+        
+    def visit_ModuleNode(self, node):
+        self.tb.module_name = node.full_module_name
+        attrs = dict(
+            module_name=node.full_module_name,
+            filename=node.pos[0].filename,
+            c_filename=self.c_output_file)
+        
+        self.tb.start('Module', attrs)
+        
+        # serialize functions
+        self.tb.start('Functions')
+        self.visitchildren(node)
+        self.tb.end('Functions')
+        
+        # 2.3 compatibility. Serialize global variables
+        self.tb.start('Globals')
+        entries = {}
+
+        for k, v in node.scope.entries.iteritems():
+            if (v.qualified_name not in self.visited and not
+                v.name.startswith('__pyx_') and not 
+                v.type.is_cfunction and not
+                v.type.is_extension_type):
+                entries[k]= v
+                
+        self.serialize_local_variables(entries)
+        self.tb.end('Globals')
+        # self.tb.end('Module') # end Module after the line number mapping in
+        # Cython.Compiler.ModuleNode.ModuleNode._serialize_lineno_map
+        return node
+    
+    def visit_FuncDefNode(self, node):
+        self.visited.add(node.local_scope.qualified_name)
+        # node.entry.visibility = 'extern'
+        if node.py_func is None:
+            pf_cname = ''
+        else:
+            pf_cname = node.py_func.entry.func_cname
+            
+        attrs = dict(
+            name=node.entry.name,
+            cname=node.entry.func_cname,
+            pf_cname=pf_cname,
+            qualified_name=node.local_scope.qualified_name,
+            lineno=str(node.pos[1]))
+        
+        self.tb.start('Function', attrs=attrs)
+        
+        self.tb.start('Locals')
+        self.serialize_local_variables(node.local_scope.entries)
+        self.tb.end('Locals')
+
+        self.tb.start('Arguments')
+        for arg in node.local_scope.arg_entries:
+            self.tb.start(arg.name)
+            self.tb.end(arg.name)
+        self.tb.end('Arguments')
+
+        self.tb.start('StepIntoFunctions')
+        self.register_stepinto = True
+        self.visitchildren(node)
+        self.register_stepinto = False
+        self.tb.end('StepIntoFunctions')
+        self.tb.end('Function')
+
+        return node
+
+    def visit_NameNode(self, node):
+        if (self.register_stepinto and 
+            node.type.is_cfunction and 
+            getattr(node, 'is_called', False) and
+            node.entry.func_cname is not None):
+            # don't check node.entry.in_cinclude, as 'cdef extern: ...' 
+            # declared functions are not 'in_cinclude'. 
+            # This means we will list called 'cdef' functions as 
+            # "step into functions", but this is not an issue as they will be 
+            # recognized as Cython functions anyway.
+            attrs = dict(name=node.entry.func_cname)
+            self.tb.start('StepIntoFunction', attrs=attrs)
+            self.tb.end('StepIntoFunction')
+        
+        self.visitchildren(node)
+        return node
+    
+    def serialize_local_variables(self, entries):
+        for entry in entries.values():
+            if entry.type.is_pyobject:
+                vartype = 'PythonObject'
+            else:
+                vartype = 'CObject'
+            
+            cname = entry.cname
+            # if entry.type.is_extension_type:
+                # cname = entry.type.typeptr_cname
+            
+            if not entry.pos:
+                # this happens for variables that are not in the user's code,
+                # e.g. for the global __builtins__, __doc__, etc. We can just
+                # set the lineno to 0 for those.
+                lineno = '0'
+            else:
+                lineno = str(entry.pos[1])
+                
+            attrs = dict(
+                name=entry.name,
+                cname=cname,
+                qualified_name=entry.qualified_name,
+                type=vartype,
+                lineno=lineno)
+            
+            self.tb.start('LocalVar', attrs)
+            self.tb.end('LocalVar')
+        

Cython/Compiler/Tests/TestParseTreeTransforms.py

+import os
+
+from Cython.Compiler import CmdLine
 from Cython.TestUtils import TransformTest
 from Cython.Compiler.ParseTreeTransforms import *
 from Cython.Compiler.Nodes import *
 
+
 class TestNormalizeTree(TransformTest):
     def test_parserbehaviour_is_what_we_coded_for(self):
         t = self.fragment(u"if x: y").root
@@ -140,6 +144,80 @@ class TestWithTransform(object): # (TransformTest): # Disabled!
         """, t)
                           
 
+if sys.version_info[:2] > (2, 4):
+    from Cython.Debugger import DebugWriter
+    from Cython.Debugger.Tests.TestLibCython import DebuggerTestCase
+else:
+    # skip test, don't let it inherit unittest.TestCase
+    DebuggerTestCase = object
+
+class TestDebugTransform(DebuggerTestCase):
+    
+    def elem_hasattrs(self, elem, attrs):
+        # we shall supporteth python 2.3 !
+        return all([attr in elem.attrib for attr in attrs])
+    
+    def test_debug_info(self):
+        try:
+            assert os.path.exists(self.debug_dest)
+            
+            t = DebugWriter.etree.parse(self.debug_dest)
+            # the xpath of the standard ElementTree is primitive, don't use
+            # anything fancy
+            L = list(t.find('/Module/Globals'))
+            # assertTrue is retarded, use the normal assert statement
+            assert L
+            xml_globals = dict(
+                            [(e.attrib['name'], e.attrib['type']) for e in L])
+            self.assertEqual(len(L), len(xml_globals))
+            
+            L = list(t.find('/Module/Functions'))
+            assert L
+            xml_funcs = dict([(e.attrib['qualified_name'], e) for e in L])
+            self.assertEqual(len(L), len(xml_funcs))
+            
+            # test globals
+            self.assertEqual('CObject', xml_globals.get('c_var'))
+            self.assertEqual('PythonObject', xml_globals.get('python_var'))
+            
+            # test functions
+            funcnames = 'codefile.spam', 'codefile.ham', 'codefile.eggs'
+            required_xml_attrs = 'name', 'cname', 'qualified_name'
+            assert all([f in xml_funcs for f in funcnames])
+            spam, ham, eggs = [xml_funcs[funcname] for funcname in funcnames]
+            
+            self.assertEqual(spam.attrib['name'], 'spam')
+            self.assertNotEqual('spam', spam.attrib['cname'])
+            assert self.elem_hasattrs(spam, required_xml_attrs)
+
+            # test locals of functions
+            spam_locals = list(spam.find('Locals'))
+            assert spam_locals
+            spam_locals.sort(key=lambda e: e.attrib['name'])
+            names = [e.attrib['name'] for e in spam_locals]
+            self.assertEqual(list('abcd'), names)
+            assert self.elem_hasattrs(spam_locals[0], required_xml_attrs)
+            
+            # test arguments of functions
+            spam_arguments = list(spam.find('Arguments'))
+            assert spam_arguments
+            self.assertEqual(1, len(list(spam_arguments)))
+            
+            # test step-into functions
+            step_into = spam.find('StepIntoFunctions')
+            spam_stepinto = [x.attrib['name'] for x in step_into]
+            assert spam_stepinto
+            self.assertEqual(2, len(spam_stepinto))
+            assert 'puts' in spam_stepinto
+            assert 'some_c_function' in spam_stepinto
+        except:
+            print open(self.debug_dest).read()
+            raise
+            
+
+
+    
+
 if __name__ == "__main__":
     import unittest
     unittest.main()

Cython/Debugger/Cygdb.py

+#!/usr/bin/env python
+
+"""
+The Cython debugger
+
+The current directory should contain a directory named 'cython_debug', or a
+path to the cython project directory should be given (the parent directory of
+cython_debug).
+
+Additional gdb args can be provided only if a path to the project directory is 
+given.
+"""
+
+import os
+import sys
+import glob
+import tempfile
+import textwrap
+import subprocess
+
+usage = "Usage: cygdb [PATH [GDB_ARGUMENTS]]"
+
+def make_command_file(path_to_debug_info, prefix_code='', no_import=False):
+    if not no_import:
+        pattern = os.path.join(path_to_debug_info, 
+                               'cython_debug',
+                               'cython_debug_info_*')
+        debug_files = glob.glob(pattern)
+
+        if not debug_files:
+            sys.exit('%s.\nNo debug files were found in %s. Aborting.' % (
+                                   usage, os.path.abspath(path_to_debug_info)))
+    
+    fd, tempfilename = tempfile.mkstemp()
+    f = os.fdopen(fd, 'w')
+    f.write(prefix_code)
+    f.write('set breakpoint pending on\n')
+    f.write("set print pretty on\n")
+    f.write('python from Cython.Debugger import libcython, libpython\n')
+    
+    if no_import:
+        # don't do this, this overrides file command in .gdbinit
+        # f.write("file %s\n" % sys.executable)
+        pass
+    else:
+        path = os.path.join(path_to_debug_info, "cython_debug", "interpreter")
+        interpreter = open(path).read()
+        f.write("file %s\n" % interpreter)
+        f.write('\n'.join('cy import %s\n' % fn for fn in debug_files))
+        f.write(textwrap.dedent('''\
+            python
+            import sys
+            try:
+                gdb.lookup_type('PyModuleObject')
+            except RuntimeError:
+                sys.stderr.write(
+                    'Python was not compiled with debug symbols (or it was '
+                    'stripped). Some functionality may not work (properly).\\n')
+            end
+        '''))
+    
+    f.close()
+    
+    return tempfilename
+
+def main(path_to_debug_info=None, gdb_argv=None, no_import=False):
+    """
+    Start the Cython debugger. This tells gdb to import the Cython and Python
+    extensions (libcython.py and libpython.py) and it enables gdb's pending 
+    breakpoints.
+    
+    path_to_debug_info is the path to the Cython build directory
+    gdb_argv is the list of options to gdb
+    no_import tells cygdb whether it should import debug information
+    """
+    if path_to_debug_info is None:
+        if len(sys.argv) > 1:
+            path_to_debug_info = sys.argv[1]
+        else:
+            path_to_debug_info = os.curdir
+    
+    if gdb_argv is None:
+        gdb_argv = sys.argv[2:]
+    
+    if path_to_debug_info == '--':
+        no_import = True
+    
+    tempfilename = make_command_file(path_to_debug_info, no_import=no_import)
+    p = subprocess.Popen(['gdb', '-command', tempfilename] + gdb_argv)
+    while True:
+        try:
+            p.wait()
+        except KeyboardInterrupt:
+            pass
+        else:
+            break
+    os.remove(tempfilename)

Cython/Debugger/DebugWriter.py

+from __future__ import with_statement
+
+import os
+import sys
+import errno
+
+try:
+  from lxml import etree
+  have_lxml = True
+except ImportError:
+    have_lxml = False
+    try:
+        # Python 2.5
+        from xml.etree import cElementTree as etree
+    except ImportError:
+        try:
+            # Python 2.5
+            from xml.etree import ElementTree as etree
+        except ImportError:
+            try:
+                # normal cElementTree install
+                import cElementTree as etree
+            except ImportError:
+                try:
+                    # normal ElementTree install
+                    import elementtree.ElementTree as etree
+                except ImportError:
+                    etree = None
+
+from Cython.Compiler import Errors
+
+
+class CythonDebugWriter(object):
+    """
+    Class to output debugging information for cygdb
+    
+    It writes debug information to cython_debug/cython_debug_info_<modulename>
+    in the build directory.
+    """
+    
+    def __init__(self, output_dir):
+        if etree is None:
+            raise Errors.NoElementTreeInstalledException()
+        
+        self.output_dir = os.path.join(output_dir, 'cython_debug')
+        self.tb = etree.TreeBuilder()
+        # set by Cython.Compiler.ParseTreeTransforms.DebugTransform
+        self.module_name = None
+        self.start('cython_debug', attrs=dict(version='1.0'))
+    
+    def start(self, name, attrs=None):
+        self.tb.start(name, attrs or {})
+    
+    def end(self, name):
+        self.tb.end(name)
+
+    def serialize(self):
+        self.tb.end('Module')
+        self.tb.end('cython_debug')
+        xml_root_element = self.tb.close()
+
+        try:
+            os.makedirs(self.output_dir)
+        except OSError, e:
+            if e.errno != errno.EEXIST:
+                raise
+
+        et = etree.ElementTree(xml_root_element)
+        kw = {}
+        if have_lxml:
+            kw['pretty_print'] = True
+        
+        fn = "cython_debug_info_" + self.module_name
+        et.write(os.path.join(self.output_dir, fn), encoding="UTF-8", **kw)
+        
+        interpreter_path = os.path.join(self.output_dir, 'interpreter')
+        with open(interpreter_path, 'w') as f:
+            f.write(sys.executable)

Cython/Debugger/Tests/TestLibCython.py

+from __future__ import with_statement
+
+import os
+import re
+import sys
+import uuid
+import shutil
+import warnings
+import textwrap
+import unittest
+import tempfile
+import subprocess
+import distutils.core
+from distutils import sysconfig
+from distutils import ccompiler
+
+import runtests
+import Cython.Distutils.extension
+from Cython.Debugger import Cygdb as cygdb
+
+root = os.path.dirname(os.path.abspath(__file__))
+codefile = os.path.join(root, 'codefile')
+cfuncs_file = os.path.join(root, 'cfuncs.c')
+with open(codefile) as f:
+    source_to_lineno = dict((line.strip(), i + 1) for i, line in enumerate(f))
+
+class DebuggerTestCase(unittest.TestCase):
+    
+    def setUp(self):
+        """
+        Run gdb and have cygdb import the debug information from the code
+        defined in TestParseTreeTransforms's setUp method
+        """
+        self.tempdir = tempfile.mkdtemp()
+        self.destfile = os.path.join(self.tempdir, 'codefile.pyx')
+        self.debug_dest = os.path.join(self.tempdir, 
+                                      'cython_debug', 
+                                      'cython_debug_info_codefile')
+        self.cfuncs_destfile = os.path.join(self.tempdir, 'cfuncs')
+        
+        self.cwd = os.getcwd()
+        os.chdir(self.tempdir)
+        
+        shutil.copy(codefile, self.destfile)
+        shutil.copy(cfuncs_file, self.cfuncs_destfile + '.c')
+        
+        compiler = ccompiler.new_compiler()
+        compiler.compile(['cfuncs.c'], debug=True)
+        
+        opts = dict(
+            test_directory=self.tempdir,
+            module='codefile',
+        )
+        
+        cython_compile_testcase = runtests.CythonCompileTestCase(
+            workdir=self.tempdir,
+            # we clean up everything (not only compiled files)
+            cleanup_workdir=False,
+            **opts
+        )
+        
+        cython_compile_testcase.run_cython(
+            targetdir=self.tempdir,
+            incdir=None,
+            annotate=False,
+            extra_compile_options={
+                'gdb_debug':True,
+                'output_dir':self.tempdir,
+            },
+            **opts
+        )
+        
+        cython_compile_testcase.run_distutils(
+            incdir=None,
+            workdir=self.tempdir,
+            extra_extension_args={'extra_objects':['cfuncs.o']},
+            **opts
+        )
+        
+        # ext = Cython.Distutils.extension.Extension(
+            # 'codefile',
+            # ['codefile.pyx'], 
+            # pyrex_gdb=True,
+            # extra_objects=['cfuncs.o'])
+        # 
+        # distutils.core.setup(
+            # script_args=['build_ext', '--inplace'],
+            # ext_modules=[ext],
+            # cmdclass=dict(build_ext=Cython.Distutils.build_ext)
+        # )
+        
+    def tearDown(self):
+        os.chdir(self.cwd)
+        shutil.rmtree(self.tempdir)
+
+
+class GdbDebuggerTestCase(DebuggerTestCase):
+    def setUp(self):
+        super(GdbDebuggerTestCase, self).setUp()
+        
+        prefix_code = textwrap.dedent('''\
+            python
+                
+            import os
+            import sys
+            import traceback
+            
+            def excepthook(type, value, tb):
+                traceback.print_exception(type, value, tb)
+                os._exit(1)
+            
+            sys.excepthook = excepthook
+            
+            # Have tracebacks end up on sys.stderr (gdb replaces sys.stderr
+            # with an object that calls gdb.write())
+            sys.stderr = sys.__stderr__
+            
+            end
+            ''')
+        
+        code = textwrap.dedent('''\
+            python
+            
+            from Cython.Debugger.Tests import test_libcython_in_gdb
+            test_libcython_in_gdb.main()
+            
+            end
+            ''')
+        
+        self.gdb_command_file = cygdb.make_command_file(self.tempdir, 
+                                                        prefix_code)
+        open(self.gdb_command_file, 'a').write(code)
+        
+        args = ['gdb', '-batch', '-x', self.gdb_command_file, '-n', '--args',
+                sys.executable, '-c', 'import codefile']
+        
+        paths = []
+        path = os.environ.get('PYTHONPATH')
+        if path:
+            paths.append(path)
+        paths.append(os.path.dirname(os.path.dirname(
+            os.path.abspath(Cython.__file__))))
+        env = dict(os.environ, PYTHONPATH=os.pathsep.join(paths))
+        
+        try:
+            p = subprocess.Popen(['gdb', '-v'], stdout=subprocess.PIPE)
+            have_gdb = True
+        except OSError:
+            # gdb was not installed
+            have_gdb = False
+        else:
+            gdb_version = p.stdout.read()
+            p.wait()
+            p.stdout.close()
+        
+        if have_gdb:
+            # Based on Lib/test/test_gdb.py
+            regex = "^GNU gdb [^\d]*(\d+)\.(\d+)"
+            gdb_version_number = re.search(regex, gdb_version).groups()
+
+        if not have_gdb or map(int, gdb_version_number) < [7, 2]:
+            self.p = None
+            warnings.warn('Skipping gdb tests, need gdb >= 7.2')
+        else:
+            self.p = subprocess.Popen(
+                args,
+                stdout=open(os.devnull, 'w'),
+                stderr=subprocess.PIPE,
+                env=env)
+        
+    def tearDown(self):
+        super(GdbDebuggerTestCase, self).tearDown()
+        if self.p:
+            self.p.stderr.close()
+            self.p.wait()
+        os.remove(self.gdb_command_file)
+        
+   
+class TestAll(GdbDebuggerTestCase):
+    
+    def test_all(self):
+        if self.p is None:
+            return
+            
+        out, err = self.p.communicate()
+        border = '*' * 30
+        start = '%s   v INSIDE GDB v   %s' % (border, border)
+        end   = '%s   ^ INSIDE GDB ^   %s' % (border, border)
+        errmsg = '\n%s\n%s%s' % (start, err, end)
+        self.assertEquals(0, self.p.wait(), errmsg)
+        sys.stderr.write(err)
+
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file

Cython/Debugger/Tests/cfuncs.c

+void
+some_c_function(void)
+{
+    int a, b, c;
+    
+    a = 1;
+    b = 2;
+}
\ No newline at end of file

Cython/Debugger/Tests/codefile

+cdef extern from "stdio.h":
+    int puts(char *s)
+
+cdef extern:
+    void some_c_function()
+
+import os
+
+cdef int c_var = 12
+python_var = 13
+
+def spam(a=0):
+    cdef:
+        int b, c
+    
+    b = c = d = 0
+    
+    b = 1
+    c = 2
+    int(10)
+    puts("spam")
+    os.path.join("foo", "bar")
+    some_c_function()
+    
+cdef ham():
+    pass
+    
+cpdef eggs():
+    pass
+
+cdef class SomeClass(object):
+    def spam(self):
+        pass
+
+spam()
+print "bye!"

Cython/Distutils/build_ext.py

@@ -17,11 +17,55 @@ from distutils.dep_util import newer, newer_group
 from distutils import log
 from distutils.dir_util import mkpath
 from distutils.command import build_ext as _build_ext
+from distutils import sysconfig
 
 extension_name_re = _build_ext.extension_name_re
 
 show_compilers = _build_ext.show_compilers
 
+class Optimization(object):
+    def __init__(self):
+        self.flags = (
+            'OPT', 
+            'CFLAGS',
+            'CPPFLAGS',
+            'EXTRA_CFLAGS', 
+            'BASECFLAGS',
+            'PY_CFLAGS',
+        )
+        self.state = sysconfig.get_config_vars(*self.flags)
+        self.config_vars = sysconfig.get_config_vars()
+        
+        
+    def disable_optimization(self):
+        "disable optimization for the C or C++ compiler"
+        badoptions = ('-O1', '-O2', '-O3')
+        
+        for flag, option in zip(self.flags, self.state):
+            if option is not None:
+                L = [opt for opt in option.split() if opt not in badoptions]
+                self.config_vars[flag] = ' '.join(L)
+    
+    def restore_state(self):
+        "restore the original state"
+        for flag, option in zip(self.flags, self.state):
+            if option is not None:
+                self.config_vars[flag] = option
+
+
+optimization = Optimization()
+
+try:
+    any
+except NameError:
+    def any(it):
+        for x in it:
+            if x:
+                return True
+        
+        return False
+        
+
 class build_ext(_build_ext.build_ext):
 
     description = "build C/C++ and Cython extensions (compile/link to build directory)"
@@ -47,10 +91,13 @@ class build_ext(_build_ext.build_ext):
             "generate .pxi file for public declarations"),
         ('pyrex-directives=', None,
             "compiler directive overrides"),
+        ('pyrex-gdb', None,
+         "generate debug information for cygdb"),
         ])
 
     boolean_options.extend([
-        'pyrex-cplus', 'pyrex-create-listing', 'pyrex-line-directives', 'pyrex-c-in-temp'
+        'pyrex-cplus', 'pyrex-create-listing', 'pyrex-line-directives', 
+        'pyrex-c-in-temp', 'pyrex-gdb',
     ])
 
     def initialize_options(self):
@@ -62,6 +109,7 @@ class build_ext(_build_ext.build_ext):
         self.pyrex_directives = None
         self.pyrex_c_in_temp = 0
         self.pyrex_gen_pxi = 0
+        self.pyrex_gdb = False
 
     def finalize_options (self):
         _build_ext.build_ext.finalize_options(self)
@@ -74,9 +122,21 @@ class build_ext(_build_ext.build_ext):
             self.pyrex_directives = {}
     # finalize_options ()
     
+    def run(self):
+        # We have one shot at this before build_ext initializes the compiler.
+        # If --pyrex-gdb is in effect as a command line option or as option
+        # of any Extension module, disable optimization for the C or C++
+        # compiler.
+        if (self.pyrex_gdb or any([getattr(ext, 'pyrex_gdb', False) 
+                                       for ext in self.extensions])):
+            optimization.disable_optimization()
+        
+        _build_ext.build_ext.run(self)
+    
     def build_extensions(self):
         # First, sanity-check the 'extensions' list
         self.check_extensions_list(self.extensions)
+        
         for ext in self.extensions:
             ext.sources = self.cython_sources(ext.sources, ext)
             self.build_extension(ext)
@@ -128,7 +188,7 @@ class build_ext(_build_ext.build_ext):
         cplus = self.pyrex_cplus or getattr(extension, 'pyrex_cplus', 0) or \
                 (extension.language and extension.language.lower() == 'c++')
         pyrex_gen_pxi = self.pyrex_gen_pxi or getattr(extension, 'pyrex_gen_pxi', 0)
-
+        pyrex_gdb = self.pyrex_gdb or getattr(extension, 'pyrex_gdb', False)
         # Set up the include_path for the Cython compiler:
         #    1.    Start with the command line option.
         #    2.    Add in any (unique) paths from the extension
@@ -201,6 +261,10 @@ class build_ext(_build_ext.build_ext):
             if rebuild:
                 log.info("cythoning %s to %s", source, target)
                 self.mkpath(os.path.dirname(target))
+                if self.inplace:
+                    output_dir = os.curdir
+                else:
+                    output_dir = self.build_lib
                 options = CompilationOptions(pyrex_default_options, 
                     use_listing_file = create_listing,
                     include_path = includes,
@@ -208,7 +272,9 @@ class build_ext(_build_ext.build_ext):
                     output_file = target,
                     cplus = cplus,
                     emit_linenums = line_directives,
-                    generate_pxi = pyrex_gen_pxi)
+                    generate_pxi = pyrex_gen_pxi,
+                    output_dir = output_dir,
+                    gdb_debug = pyrex_gdb)
                 result = cython_compile(source, options=options,
                                         full_module_name=module_name)
             else:

bin/cygdb

+#!/usr/bin/env python
+
+import sys
+
+from Cython.Debugger import Cygdb as cygdb
+
+if __name__ == '__main__':
+    cygdb.main()