Pyrex Official version 0.9.5.1a

Cython/Compiler/Code.py

@@ -22,8 +22,9 @@ class CCodeWriter:
     
     in_try_finally = 0
     
-    def __init__(self, outfile_name):
-        self.f = open_new_file(outfile_name)
+    def __init__(self, f):
+        #self.f = open_new_file(outfile_name)
+        self.f = f
         self.level = 0
         self.bol = 1
         self.marker = None
@@ -80,6 +81,7 @@ class CCodeWriter:
 
     def init_labels(self):
         self.label_counter = 0
+        self.labels_used = {}
         self.return_label = self.new_label()
         self.new_error_label()
         self.continue_label = None
@@ -134,9 +136,17 @@ class CCodeWriter:
                 new_labels.append(old_label)
         self.set_all_labels(new_labels)
         return old_labels
+    
+    def use_label(self, lbl):
+        self.labels_used[lbl] = 1
 
     def put_label(self, lbl):
-        self.putln("%s:;" % lbl)
+        if lbl in self.labels_used:
+            self.putln("%s:;" % lbl)
+    
+    def put_goto(self, lbl):
+        self.use_label(lbl)
+        self.putln("goto %s;" % lbl)
     
     def put_var_declarations(self, entries, static = 0, dll_linkage = None,
             definition = True):
@@ -146,28 +156,23 @@ class CCodeWriter:
     
     def put_var_declaration(self, entry, static = 0, dll_linkage = None,
             definition = True):
-        #print "Code.put_var_declaration:", entry.name, "definition =", definition
+        #print "Code.put_var_declaration:", entry.name, "definition =", definition ###
         visibility = entry.visibility
         if visibility == 'private' and not definition:
             return
+        if not entry.used and visibility == "private":
+            return
+        storage_class = ""
         if visibility == 'extern':
             storage_class = Naming.extern_c_macro
         elif visibility == 'public':
-            if definition:
-                storage_class = ""
-            else:
+            if not definition:
                 storage_class = Naming.extern_c_macro
         elif visibility == 'private':
             if static:
                 storage_class = "static"
-            else:
-                storage_class = ""
         if storage_class:
             self.put("%s " % storage_class)
-        #if visibility == 'extern' or visibility == 'public' and not definition:
-        #	self.put("%s " % Naming.extern_c_macro)
-        #elif static and visibility <> 'public':
-        #	self.put("static ")
         if visibility <> 'public':
             dll_linkage = None
         self.put(entry.type.declaration_code(entry.cname,
@@ -186,10 +191,6 @@ class CCodeWriter:
     
     def as_pyobject(self, cname, type):
         return typecast(py_object_type, type, cname)
-        #if type.is_extension_type and type.base_type:
-        #	return "(PyObject *)" + cname
-        #else:
-        #	return cname
     
     def put_incref(self, cname, type):
         self.putln("Py_INCREF(%s);" % self.as_pyobject(cname, type))
@@ -231,12 +232,13 @@ class CCodeWriter:
             self.putln("Py_XDECREF(%s); %s = 0;" % (
                 self.entry_as_pyobject(entry), entry.cname))
     
-    def put_var_decrefs(self, entries):
+    def put_var_decrefs(self, entries, used_only = 0):
         for entry in entries:
-            if entry.xdecref_cleanup:
-                self.put_var_xdecref(entry)
-            else:
-                self.put_var_decref(entry)
+            if not used_only or entry.used:
+                if entry.xdecref_cleanup:
+                    self.put_var_xdecref(entry)
+                else:
+                    self.put_var_decref(entry)
     
     def put_var_xdecrefs(self, entries):
         for entry in entries:
@@ -269,13 +271,15 @@ class CCodeWriter:
                 term))
     
     def error_goto(self, pos):
+        lbl = self.error_label
+        self.use_label(lbl)
         return "{%s = %s[%s]; %s = %s; goto %s;}" % (
             Naming.filename_cname,
             Naming.filetable_cname,
             self.lookup_filename(pos[0]),
             Naming.lineno_cname,
             pos[1],
-            self.error_label)
+            lbl)
     
     def lookup_filename(self, filename):
         try:

Cython/Compiler/Parsing.py

@@ -8,6 +8,7 @@ from types import ListType, TupleType
 from Scanning import PyrexScanner
 import Nodes
 import ExprNodes
+from ModuleNode import ModuleNode
 from Errors import error, InternalError
 
 def p_ident(s, message = "Expected an identifier"):
@@ -413,13 +414,7 @@ def p_atom(s):
     elif sy == '`':
         return p_backquote_expr(s)
     elif sy == 'INT':
-        digits = s.systring
-        if digits[:2] == "0x":
-            value = long(digits[2:], 16)
-        elif digits[:1] == "0":
-            value = int(digits, 8)
-        else:
-            value = int(s.systring)
+        value = s.systring
         s.next()
         return ExprNodes.IntNode(pos, value = value)
     elif sy == 'LONG':
@@ -517,7 +512,7 @@ def p_string_literal(s):
                 elif c == '\n':
                     pass
                 else:
-                    chars.append(systr[1:])
+                    chars.append(r'\\' + systr[1:])
         elif sy == 'NEWLINE':
             chars.append(r'\n')
         elif sy == 'END_STRING':
@@ -668,7 +663,6 @@ def p_expression_or_assignment(s):
         if len(nodes) == 1:
             return nodes[0]
         else:
-            #return Nodes.StatListNode(nodes[0].pos, stats = nodes)
             return Nodes.ParallelAssignmentNode(nodes[0].pos, stats = nodes)
 
 def flatten_parallel_assignments(input, output):
@@ -1375,19 +1369,19 @@ def p_exception_value_clause(s):
             if s.sy == '?':
                 exc_check = 1
                 s.next()
-            exc_val = p_exception_value(s)
+            exc_val = p_simple_expr(s) #p_exception_value(s)
     return exc_val, exc_check
 
-def p_exception_value(s):
-    sign = ""
-    if s.sy == "-":
-        sign = "-"
-        s.next()
-    if s.sy in ('INT', 'LONG', 'FLOAT', 'NULL'):
-        s.systring = sign + s.systring
-        return p_atom(s)
-    else:
-        s.error("Exception value must be an int or float literal or NULL")
+#def p_exception_value(s):
+#	sign = ""
+#	if s.sy == "-":
+#		sign = "-"
+#		s.next()
+#	if s.sy in ('INT', 'LONG', 'FLOAT', 'NULL'):
+#		s.systring = sign + s.systring
+#		return p_atom(s)
+#	else:
+#		s.error("Exception value must be an int or float literal or NULL")
 
 c_arg_list_terminators = ('*', '**', '.', ')')
 c_arg_list_trailers = ('.', '*', '**')
@@ -1780,7 +1774,7 @@ def p_module(s, pxd):
     if s.sy <> 'EOF':
         s.error("Syntax error in statement [%s,%s]" % (
             repr(s.sy), repr(s.systring)))
-    return Nodes.ModuleNode(pos, doc = doc, body = body)
+    return ModuleNode(pos, doc = doc, body = body)
 
 #----------------------------------------------
 #

Cython/Compiler/PyrexTypes.py

@@ -259,14 +259,14 @@ class CType(PyrexType):
     from_py_function = None
 
 
-class CSimpleType(CType):
-    #
-    #  Base class for all unstructured C types.
-    #
-    pass
+#class CSimpleType(CType):
+#	#
+#	#  Base class for all unstructured C types.
+#	#
+#	pass
 
 
-class CVoidType(CSimpleType):
+class CVoidType(CType):
     is_void = 1
     
     def __repr__(self):
@@ -313,9 +313,6 @@ class CNumericType(CType):
             u = "unsigned "
         return "<CNumericType %s%s>" % (u, rank_to_type_name[self.rank])
     
-    def assignable_from_resolved_type(self, src_type):
-        return src_type.is_numeric or src_type is error_type
-    
     def declaration_code(self, entity_code, 
             for_display = 0, dll_linkage = None, pyrex = 0):
         if self.signed:
@@ -324,8 +321,6 @@ class CNumericType(CType):
             u = "unsigned "
         base = public_decl(u + rank_to_type_name[self.rank], dll_linkage)
         return "%s %s" % (base,  entity_code)
-
-#		return "%s%s %s" % (u, rank_to_type_name[self.rank], entity_code)
     
 
 class CIntType(CNumericType):
@@ -338,6 +333,9 @@ class CIntType(CNumericType):
     def __init__(self, rank, signed, pymemberdef_typecode = None, is_returncode = 0):
         CNumericType.__init__(self, rank, signed, pymemberdef_typecode)
         self.is_returncode = is_returncode
+    
+    def assignable_from_resolved_type(self, src_type):
+        return src_type.is_int or src_type.is_enum or src_type is error_type
 
 
 class CUIntType(CIntType):
@@ -373,6 +371,9 @@ class CFloatType(CNumericType):
     def __init__(self, rank, pymemberdef_typecode = None):
         CNumericType.__init__(self, rank, 1, pymemberdef_typecode)
     
+    def assignable_from_resolved_type(self, src_type):
+        return src_type.is_numeric or src_type is error_type
+
 
 class CArrayType(CType):
     #  base_type     CType              Element type
@@ -447,6 +448,8 @@ class CPtrType(CType):
             return 1
         elif self.base_type.is_cfunction and other_type.is_cfunction:
             return self.base_type.same_as(other_type)
+        elif other_type.is_array:
+            return self.base_type.same_as(other_type.base_type)
         elif not other_type.is_ptr:
             return 0
         elif self.base_type.is_void:
@@ -608,14 +611,16 @@ class CStructOrUnionType(CType):
         return self.is_complete()
 
 
-class CEnumType(CIntType):
+class CEnumType(CType):
     #  name           string
     #  cname          string or None
     #  typedef_flag   boolean
     
     is_enum = 1
-    signed = 1
-    rank = 2
+    #signed = 1
+    #rank = 2
+    to_py_function = "PyInt_FromLong"
+    from_py_function = "PyInt_AsLong"
 
     def __init__(self, name, cname, typedef_flag):
         self.name = name

Cython/Compiler/Symtab.py

@@ -61,6 +61,7 @@ class Entry:
     # interned_cname   string     C name of interned name string
     # pystring_cname   string     C name of Python version of string literal
     # is_interned      boolean    For string const entries, value is interned
+    # used             boolean
 
     borrowed = 0
     init = ""
@@ -91,6 +92,7 @@ class Entry:
     interned_cname = None
     pystring_cname = None
     is_interned = 0
+    used = 0
     
     def __init__(self, name, cname, type, pos = None, init = None):
         self.name = name
@@ -351,6 +353,7 @@ class Scope:
         # Add an entry for a string constant.
         cname = self.new_const_cname()
         entry = Entry("", cname, c_char_array_type, init = value)
+        entry.used = 1
         self.const_entries.append(entry)
         return entry
     
@@ -395,6 +398,7 @@ class Scope:
         self.temp_counter = n + 1
         cname = "%s%d" % (Naming.pyrex_prefix, n)
         entry = Entry("", cname, type)
+        entry.used = 1
         if type.is_pyobject:
             entry.init = "0"
         self.cname_to_entry[entry.cname] = entry
@@ -476,6 +480,7 @@ class ModuleScope(Scope):
     # intern_map           {string : string}  Mapping from Python names to interned strs
     # interned_names       [string]           Interned names pending generation of declarations
     # all_pystring_entries [Entry]            Python string consts from all scopes
+    # types_imported       {PyrexType : 1}    Set of types for which import code generated
 
     def __init__(self, name, parent_module, context):
         self.parent_module = parent_module
@@ -500,6 +505,7 @@ class ModuleScope(Scope):
         self.intern_map = {}
         self.interned_names = []
         self.all_pystring_entries = []
+        self.types_imported = {}
     
     def qualifying_scope(self):
         return self.parent_module
@@ -565,6 +571,8 @@ class ModuleScope(Scope):
         # None if previously declared as something else.
         entry = self.lookup_here(name)
         if entry:
+            if entry.is_pyglobal and entry.as_module is scope:
+                return entry # Already declared as the same module
             if not (entry.is_pyglobal and not entry.as_module):
                 error(pos, "'%s' redeclared" % name)
                 return None
@@ -956,6 +964,8 @@ class CClassScope(ClassScope):
         if visibility in ('public', 'readonly'):
             if type.pymemberdef_typecode:
                 self.public_attr_entries.append(entry)
+                if name == "__weakref__":
+                    error(pos, "Special attribute __weakref__ cannot be exposed to Python")
             else:
                 error(pos,
                     "C attribute of type '%s' cannot be accessed from Python" % type)

Cython/Compiler/Version.py

-version = '0.9.4.1'
+version = '0.9.5.1a'

Cython/Mac/DarwinSystem.py

@@ -4,7 +4,8 @@
 
 verbose = 0
 gcc_pendantic = True
-gcc_warnings_are_errors = False
+gcc_warnings_are_errors = True
+gcc_all_warnings = True
 
 import os
 from Pyrex.Utils import replace_suffix
@@ -23,6 +24,9 @@ if gcc_pendantic:
     compiler_options.extend(["-pedantic", "-Wno-long-long"])
 if gcc_warnings_are_errors:
     compiler_options.append("-Werror")
+if gcc_all_warnings:
+    compiler_options.append("-Wall")
+    compiler_options.append("-Wno-unused-function")
 
 linkers = ["gcc", "g++"]
 linker_options = \
@@ -45,6 +49,7 @@ def c_compile(c_file, verbose_flag = 0, cplus = 0, obj_suffix = ".o"):
     args = [compiler] + compiler_options + include_options + [c_file, "-o", o_file]
     if verbose_flag or verbose:
         print " ".join(args)
+    #print compiler, args ###
     status = os.spawnvp(os.P_WAIT, compiler, args)
     if status <> 0:
         raise CCompilerError("C compiler returned status %s" % status)

Cython/Mac/MPW_Misc_Suite.py

-"""Suite Misc Suite: Suite that adds additional features to the Application.
-Level 1, version 1
-
-Generated from MPW:MPW Shell
-AETE/AEUT resource version 1/0, language 0, script 0
-"""
-
-import aetools
-import MacOS
-
-_code = 'misc'
-
-class MPW_Misc_Suite:
-
-    def DoScript(self, _object, _attributes={}, **_arguments):
-        """DoScript: Execute an MPW command, any command that could be executed from the command line can be sent as a script.
-        Required argument: The script to execute
-        Keyword argument _attributes: AppleEvent attribute dictionary
-        """
-        _code = 'misc'
-        _subcode = 'dosc'
-
-        if _arguments: raise TypeError, 'No optional args expected'
-        _arguments['----'] = _object
-
-
-        _reply, _arguments, _attributes = self.send(_code, _subcode,
-                _arguments, _attributes)
-        if _arguments.has_key('errn'):
-            raise aetools.Error, aetools.decodeerror(_arguments)
-        # XXXX Optionally decode result
-        if _arguments.has_key('----'):
-            return _arguments['----']
-
-
-#
-# Indices of types declared in this module
-#
-_classdeclarations = {
-}
-
-_propdeclarations = {
-}
-
-_compdeclarations = {
-}
-
-_enumdeclarations = {
-}

Cython/Mac/Makefile

+# Makefile for Darwin
+
+# Change this to your Python source location
+PYTHON := /Local/Build/Pythonic/python/2.3
+
+INCLUDE := -I$(PYTHON) -I$(PYTHON)/Include -I$(PYTHON)/Mac/Include
+
+CCOPTS := -fno-strict-aliasing -Wno-long-double -no-cpp-precomp \
+	-mno-fused-madd -fno-common -dynamic
+
+LDOPTS := -Wl,-F.,-w -bundle -framework Python -framework Carbon
+
+all:	_File.so
+
+_File.o:	_Filemodule_patched.c
+	gcc -c $(INCLUDE) $(OPTS) $< -o $@
+
+_File.so:	_File.o
+	gcc $(LDOPTS) $< -o $@

Cython/Mac/PS_Misc_Suite.py

-"Apple Event suite for pyserver."
-
-import aetools
-import MacOS
-
-_code = 'misc'
-
-class PS_Misc_Suite:
-
-    def DoScript(self, _object, _attributes={}, **_arguments):
-        """DoScript: Execute a Python file, optionally with command line args.
-        Required argument: filename.py or [filename.py, arg, ...]
-        Keyword argument _attributes: AppleEvent attribute dictionary
-        """
-        _code = 'misc'
-        _subcode = 'dosc'
-
-        if _arguments: raise TypeError, 'No optional args expected'
-        _arguments['----'] = _object
-
-
-        _reply, _arguments, _attributes = self.send(_code, _subcode,
-                _arguments, _attributes)
-        if _arguments.has_key('errn'):
-            raise aetools.Error, aetools.decodeerror(_arguments)
-        # XXXX Optionally decode result
-        if _arguments.has_key('----'):
-            return _arguments['----']
-
-
-#
-# Indices of types declared in this module
-#
-_classdeclarations = {
-}
-
-_propdeclarations = {
-}
-
-_compdeclarations = {
-}
-
-_enumdeclarations = {
-}

Cython/Mac/PyServerMain.py

-#
-#   Simple Apple-event driven Python interpreter
-#
-
-import os, sys, traceback
-from cStringIO import StringIO
-from MiniAEFrame import AEServer, MiniApplication
-
-class PythonServer(AEServer, MiniApplication):
-    
-    def __init__(self):
-        MiniApplication.__init__(self)
-        AEServer.__init__(self)
-        self.installaehandler('aevt', 'oapp', ignore)
-        self.installaehandler('aevt', 'quit', quit)
-        self.installaehandler('misc', 'dosc', doscript)
-
-
-def ignore(**kwds):
-    pass
-
-def quit(**kwds):
-    server._quit()
-
-def doscript(args, **kwds):
-    print "doscript:", repr(args) ###
-    stat = 0
-    output = ""
-    errput = ""
-    #print "Normalising args" ###
-    if type(args) == type(""):
-        args = [args]
-    #print "Setting sys.argv" ###
-    sys.argv = args
-    #print "Finding script directory and module file" ###
-    dir = os.path.dirname(args[0])
-    dir = os.path.join(start_dir, dir)
-    pyfile = os.path.basename(args[0])
-    mod = os.path.splitext(pyfile)[0]
-    #print "dir:", repr(dir) ###
-    #print "mod:", repr(mod) ###
-    os.chdir(dir)
-    sys.path = start_path[:]
-    sys.path[0] = dir
-    #print "path:", sys.path ###
-    try:
-        sys.stdout = StringIO()
-        sys.stderr = StringIO()
-        try:
-            #sys.__stdout__.write("Path: %s\n" % sys.path) ###
-            #sys.__stdout__.write("Importing: %s\n" % mod) ###
-            try:
-                __import__(mod)
-            except KeyboardInterrupt:
-                raise
-            except SystemExit, exc:
-                #sys.__stdout__.write("Caught a SystemExit\n") ###
-                try:
-                    stat = int(str(exc))
-                except ValueError:
-                    stat = 1
-                #sys.__stdout__.write("stat = %s\n" % stat) ###
-            except:
-                traceback.print_exc()
-                stat = 1
-            #sys.__stdout__.write("Done the import\n") ###
-        finally:
-            output = sys.stdout.getvalue()
-            #sys.__stdout__.write("Output:\n%s" % output) ###
-            errput = sys.stderr.getvalue()
-    finally:
-        sys.stdout = sys.__stdout__
-        sys.stderr = sys.__stdout__
-        pass
-    return [stat, output, errput]
-
-start_dir = os.getcwd()
-start_path = sys.path[:]
-server = PythonServer()
-#print "Open for business"
-try:
-    server.mainloop()
-except:
-    traceback.print_exc()
-    #sys.exit(1)
-#print "Closing shop"

Cython/Mac/_Filemodule_patched.c

@@ -108,6 +108,15 @@ PyMac_BuildHFSUniStr255(HFSUniStr255 *itself)
 
 static PyObject *File_Error;
 
+static PyTypeObject FInfo_Type;
+
+#define FInfo_Check(x) ((x)->ob_type == &FInfo_Type || PyObject_TypeCheck((x), &FInfo_Type))
+
+typedef struct FInfoObject {
+	PyObject_HEAD
+	FInfo ob_itself;
+} FInfoObject;
+
 /* ------------------- Object type FSCatalogInfo -------------------- */
 
 static PyTypeObject FSCatalogInfo_Type;
@@ -338,16 +347,16 @@ static int FSCatalogInfo_set_userPrivileges(FSCatalogInfoObject *self, PyObject
 
 static PyObject *FSCatalogInfo_get_finderInfo(FSCatalogInfoObject *self, void *closure)
 {
-	return FInfo_New((FInfo *)self->finderInfo);
+	return FInfo_New((FInfo *)self->ob_itself.finderInfo);
 }
 
 static int FSCatalogInfo_set_finderInfo(FSCatalogInfoObject *self, PyObject *v, void *closure)
 {
 	if (!FInfo_Check(v)) {
-		PyErr_SetString(PyTypeError, "Expected an FInfo object");
+		PyErr_SetString(PyExc_TypeError, "Expected an FInfo object");
 		return -1;
 	}
-	*(FInfo *)self->finderInfo = ((FInfoObject *)self)->ob_itself;
+	*(FInfo *)self->ob_itself.finderInfo = ((FInfoObject *)v)->ob_itself;
 	return 0;
 }
 
@@ -485,15 +494,6 @@ static PyTypeObject FSCatalogInfo_Type = {
 
 /* ----------------------- Object type FInfo ------------------------ */
 
-static PyTypeObject FInfo_Type;
-
-#define FInfo_Check(x) ((x)->ob_type == &FInfo_Type || PyObject_TypeCheck((x), &FInfo_Type))
-
-typedef struct FInfoObject {
-	PyObject_HEAD
-	FInfo ob_itself;
-} FInfoObject;
-
 static PyObject *FInfo_New(FInfo *itself)
 {
 	FInfoObject *it;
@@ -3247,8 +3247,8 @@ PyMac_GetFSRef(PyObject *v, FSRef *fsr)
 	if ( PyString_Check(v) || PyUnicode_Check(v)) {
 		char *path = NULL;
 		if (!PyArg_Parse(v, "et", Py_FileSystemDefaultEncoding, &path))
-			return NULL;
-		if ( (err=FSPathMakeRef(path, fsr, NULL)) ) {
+			return 0;
+		if ( (err=FSPathMakeRef((unsigned char *)path, fsr, NULL)) ) {
 			PyMac_Error(err);
 			return 0;
 		}

Cython/Unix/LinuxSystem.py

+#
+#   Pyrex - Linux system interface
+#
+
+verbose = 0
+gcc_pendantic = True
+gcc_warnings_are_errors = True
+gcc_all_warnings = True
+
+import os
+from Pyrex.Utils import replace_suffix
+from Pyrex.Compiler.Errors import PyrexError
+
+version = "%s.%s" % sys.version[:2]
+py_include_dirs = [
+    "%s/include/python%s" % (sys.prefix, version)
+]
+
+compilers = ["gcc", "g++"]
+compiler_options = \
+    "-g -c -fno-strict-aliasing -Wno-long-double -no-cpp-precomp " \
+    "-mno-fused-madd -fno-common -dynamic " \
+    .split()
+if gcc_pendantic:
+    compiler_options.extend(["-pedantic", "-Wno-long-long"])
+if gcc_warnings_are_errors:
+    compiler_options.append("-Werror")
+if gcc_all_warnings:
+    compiler_options.append("-Wall")
+    compiler_options.append("-Wno-unused-function")
+
+linkers = ["gcc", "g++"]
+linker_options = \
+    "-shared" \
+    .split()
+
+class CCompilerError(PyrexError):
+    pass
+
+def c_compile(c_file, verbose_flag = 0, cplus = 0, obj_suffix = ".o"):
+    #  Compile the given C source file to produce
+    #  an object file. Returns the pathname of the
+    #  resulting file.
+    c_file = os.path.join(os.getcwd(), c_file)
+    o_file = replace_suffix(c_file, obj_suffix)
+    include_options = []
+    for dir in py_include_dirs:
+        include_options.append("-I%s" % dir)
+    compiler = compilers[bool(cplus)]
+    args = [compiler] + compiler_options + include_options + [c_file, "-o", o_file]
+    if verbose_flag or verbose:
+        print " ".join(args)
+    #print compiler, args ###
+    status = os.spawnvp(os.P_WAIT, compiler, args)
+    if status <> 0:
+        raise CCompilerError("C compiler returned status %s" % status)
+    return o_file
+
+def c_link(obj_file, verbose_flag = 0, extra_objects = [], cplus = 0):
+    return c_link_list([obj_file] + extra_objects, verbose_flag, cplus)
+
+def c_link_list(obj_files, verbose_flag = 0, cplus = 0):
+    #  Link the given object files into a dynamically
+    #  loadable extension file. Returns the pathname
+    #  of the resulting file.
+    out_file = replace_suffix(obj_files[0], ".so")
+    linker = linkers[bool(cplus)]
+    args = [linker] + linker_options + obj_files + ["-o", out_file]
+    if verbose_flag or verbose:
+        print " ".join(args)
+    status = os.spawnvp(os.P_WAIT, linker, args)
+    if status <> 0:
+        raise CCompilerError("Linker returned status %s" % status)
+    return out_file