Build obmalloc.c directly instead of #include'ing from object.c.

Also move all _PyMalloc_XXX entry points into obmalloc.c.

The Windows build works fine.
The Unix build is changed here (Makefile.pre.in), but not tested.
No other platform's build process has been fiddled.

Makefile.pre.in

@@ -263,6 +263,7 @@ OBJECT_OBJS=	\
 		Objects/methodobject.o \
 		Objects/moduleobject.o \
 		Objects/object.o \
+		Objects/obmalloc.o \
 		Objects/rangeobject.o \
 		Objects/sliceobject.o \
 		Objects/stringobject.o \
@@ -424,8 +425,6 @@ Python/getplatform.o: $(srcdir)/Python/getplatform.c
 Python/importdl.o: $(srcdir)/Python/importdl.c
 		$(CC) -c $(CFLAGS) $(CPPFLAGS) -I$(DLINCLDIR) -o $@ $(srcdir)/Python/importdl.c
 
-Objects/object.o: $(srcdir)/Objects/object.c $(srcdir)/Objects/obmalloc.c
-
 Objects/unicodectype.o:	$(srcdir)/Objects/unicodectype.c \
 				$(srcdir)/Objects/unicodetype_db.h
 

Objects/object.c

@@ -2090,46 +2090,3 @@ _PyTrash_destroy_chain(void)
 		--_PyTrash_delete_nesting;
 	}
 }
-
-#ifdef WITH_PYMALLOC
-#include "obmalloc.c"
-#else
-void *_PyMalloc_Malloc(size_t n)
-{
-	return PyMem_MALLOC(n);
-}
-
-void *_PyMalloc_Realloc(void *p, size_t n)
-{
-	return PyMem_REALLOC(p, n);
-}
-
-void _PyMalloc_Free(void *p)
-{
-	PyMem_FREE(p);
-}
-#endif /* !WITH_PYMALLOC */
-
-PyObject *_PyMalloc_New(PyTypeObject *tp)
-{
-	PyObject *op;
-	op = (PyObject *) _PyMalloc_MALLOC(_PyObject_SIZE(tp));
-	if (op == NULL)
-		return PyErr_NoMemory();
-	return PyObject_INIT(op, tp);
-}
-
-PyVarObject *_PyMalloc_NewVar(PyTypeObject *tp, int nitems)
-{
-	PyVarObject *op;
-	const size_t size = _PyObject_VAR_SIZE(tp, nitems);
-	op = (PyVarObject *) _PyMalloc_MALLOC(size);
-	if (op == NULL)
-		return (PyVarObject *)PyErr_NoMemory();
-	return PyObject_INIT_VAR(op, tp, nitems);
-}
-
-void _PyMalloc_Del(PyObject *op)
-{
-	_PyMalloc_FREE(op);
-}

Objects/obmalloc.c

+#include "Python.h"
+
+#ifdef WITH_PYMALLOC
+
 /* An object allocator for Python.
 
    Here is an introduction to the layers of the Python memory architecture,
@@ -636,3 +640,49 @@ _PyMalloc_Calloc(size_t nbel, size_t elsz)
 }
 */
 
+#else	/* ! WITH_PYMALLOC */
+void
+*_PyMalloc_Malloc(size_t n)
+{
+	return PyMem_MALLOC(n);
+}
+
+void
+*_PyMalloc_Realloc(void *p, size_t n)
+{
+	return PyMem_REALLOC(p, n);
+}
+
+void
+_PyMalloc_Free(void *p)
+{
+	PyMem_FREE(p);
+}
+#endif /* WITH_PYMALLOC */
+
+PyObject
+*_PyMalloc_New(PyTypeObject *tp)
+{
+	PyObject *op;
+	op = (PyObject *) _PyMalloc_MALLOC(_PyObject_SIZE(tp));
+	if (op == NULL)
+		return PyErr_NoMemory();
+	return PyObject_INIT(op, tp);
+}
+
+PyVarObject *
+_PyMalloc_NewVar(PyTypeObject *tp, int nitems)
+{
+	PyVarObject *op;
+	const size_t size = _PyObject_VAR_SIZE(tp, nitems);
+	op = (PyVarObject *) _PyMalloc_MALLOC(size);
+	if (op == NULL)
+		return (PyVarObject *)PyErr_NoMemory();
+	return PyObject_INIT_VAR(op, tp, nitems);
+}
+
+void
+_PyMalloc_Del(PyObject *op)
+{
+	_PyMalloc_FREE(op);
+}

PCbuild/pythoncore.dsp

@@ -1268,6 +1268,21 @@ SOURCE=..\Objects\object.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\Objects\obmalloc.c
+
+!IF  "$(CFG)" == "pythoncore - Win32 Release"
+
+!ELSEIF  "$(CFG)" == "pythoncore - Win32 Debug"
+
+!ELSEIF  "$(CFG)" == "pythoncore - Win32 Alpha Debug"
+
+!ELSEIF  "$(CFG)" == "pythoncore - Win32 Alpha Release"
+
+!ENDIF 
+
+# End Source File
+# Begin Source File
+
 SOURCE=..\Modules\operator.c
 
 !IF  "$(CFG)" == "pythoncore - Win32 Release"