Index: Makefile.pre.in
===================================================================
--- Makefile.pre.in
+++ Makefile.pre.in	2010-10-28 02:10:43.000000000 +0200
@@ -87,6 +87,8 @@ PY_CFLAGS=	$(CFLAGS) $(CPPFLAGS) $(CFLAG
 
 # Machine-dependent subdirectories
 MACHDEP=	@MACHDEP@
+LIB=		@LIB@
+ARCH=		@ARCH@
 
 # Multiarch directory (may be empty)
 MULTIARCH=	@MULTIARCH@
@@ -106,7 +108,7 @@ LIBDIR=		@libdir@
 MANDIR=		@mandir@
 INCLUDEDIR=	@includedir@
 CONFINCLUDEDIR=	$(exec_prefix)/include
-SCRIPTDIR=	$(prefix)/lib
+SCRIPTDIR=	$(prefix)/$(LIB)
 
 # Detailed destination directories
 BINLIBDEST=	$(LIBDIR)/python$(VERSION)
@@ -621,7 +623,7 @@ $(AST_C): $(AST_ASDL) $(ASDLGEN_FILES)
 Python/compile.o Python/symtable.o Python/ast.o: $(GRAMMAR_H) $(AST_H)
 
 Python/getplatform.o: $(srcdir)/Python/getplatform.c
-		$(CC) -c $(PY_CFLAGS) -DPLATFORM='"$(MACHDEP)"' -o $@ $(srcdir)/Python/getplatform.c
+		$(CC) -c $(PY_CFLAGS) -DPLATFORM='"$(MACHDEP)"' -DARCH='"$(ARCH)"' -DLIB='"$(LIB)"' -o $@ $(srcdir)/Python/getplatform.c
 
 Python/importdl.o: $(srcdir)/Python/importdl.c
 		$(CC) -c $(PY_CFLAGS) -I$(DLINCLDIR) -o $@ $(srcdir)/Python/importdl.c
Index: configure.in
===================================================================
--- configure.ac
+++ configure.ac	2010-10-28 02:10:43.000000000 +0200
@@ -636,6 +636,41 @@
     ;;
 esac
 
+AC_SUBST(ARCH)
+AC_MSG_CHECKING(ARCH)
+ARCH=`uname -m`
+case $ARCH in
+i?86) ARCH=i386;;
+esac
+AC_MSG_RESULT($ARCH)
+
+AC_SUBST(LIB)
+AC_MSG_CHECKING(LIB)
+case $ac_sys_system in
+Linux*)
+  # Test if the compiler is 64bit
+  echo 'int i;' > conftest.$ac_ext
+  python_cv_cc_64bit_output=no
+  if AC_TRY_EVAL(ac_compile); then
+    case `/usr/bin/file conftest.$ac_objext` in
+    *"ELF 64"*)
+      python_cv_cc_64bit_output=yes
+      ;;
+    esac
+  fi
+  rm -rf conftest*
+  ;;
+esac
+
+case $ARCH:$python_cv_cc_64bit_output in
+ppc64:yes | powerpc64:yes | s390x:yes | sparc64:yes | x86_64:yes)
+  LIB="lib64"
+  ;;
+*:*)
+  LIB="lib"
+  ;;
+esac
+AC_MSG_RESULT($LIB)
 
 AC_SUBST(LIBRARY)
 AC_MSG_CHECKING(LIBRARY)
Index: setup.py
===================================================================
--- setup.py
+++ setup.py	2010-10-28 02:15:12.000000000 +0200
@@ -489,6 +489,7 @@ class PyBuildExt(build_ext):
         except NameError:
             have_unicode = 0
 
+        libname = sys.lib
         # lib_dirs and inc_dirs are used to search for files;
         # if a file is found in one of those directories, it can
         # be assumed that no additional -I,-L directives are needed.
@@ -500,8 +501,7 @@ class PyBuildExt(build_ext):
                 ):
                 add_dir_to_list(inc_dirs, d)
             for d in (
-                '/lib64', '/usr/lib64',
-                '/lib', '/usr/lib',
+                libname, '/usr/'+libname
                 ):
                 add_dir_to_list(lib_dirs, d)
         exts = []
@@ -753,11 +753,11 @@ class PyBuildExt(build_ext):
             elif curses_library:
                 readline_libs.append(curses_library)
             elif self.compiler.find_library_file(lib_dirs +
-                                                     ['/usr/lib/termcap'],
+                                                     ['/usr/'+libname+'/termcap'],
                                                      'termcap'):
                 readline_libs.append('termcap')
             exts.append( Extension('readline', ['readline.c'],
-                                   library_dirs=['/usr/lib/termcap'],
+                                   library_dirs=['/usr/'+libname+'/termcap'],
                                    extra_link_args=readline_extra_link_args,
                                    libraries=readline_libs) )
         else:
@@ -1861,8 +1861,8 @@ class PyBuildExt(build_ext):
             added_lib_dirs.append('/usr/openwin/lib')
         elif os.path.exists('/usr/X11R6/include'):
             include_dirs.append('/usr/X11R6/include')
-            added_lib_dirs.append('/usr/X11R6/lib64')
-            added_lib_dirs.append('/usr/X11R6/lib')
+            added_lib_dirs.append('/usr/X11R6/'+sys.lib)
+            #added_lib_dirs.append('/usr/X11R6/lib')
         elif os.path.exists('/usr/X11R5/include'):
             include_dirs.append('/usr/X11R5/include')
             added_lib_dirs.append('/usr/X11R5/lib')
Index: Lib/site.py
===================================================================
--- Lib/site.py
+++ Lib/site.py	2010-10-28 02:13:04.000000000 +0200
@@ -286,13 +286,19 @@
         if sys.platform in ('os2emx', 'riscos'):
             sitepackages.append(os.path.join(prefix, "Lib", "site-packages"))
         elif os.sep == '/':
-            sitepackages.append(os.path.join(prefix, "lib",
+            sitepackages.append(os.path.join(prefix, sys.lib,
                                         "python" + sys.version[:3],
                                         "site-packages"))
-            sitepackages.append(os.path.join(prefix, "lib", "site-python"))
+            sitepackages.append(os.path.join(prefix, sys.lib, "site-python"))
+            if sys.lib != 'lib':
+                    sitepackages.append(os.path.join(prefix, 'lib',
+                                                     "python" + sys.version[:3],
+                                                     "site-packages"))
+                    sitepackages.append(os.path.join(prefix, 'lib', "site-python"))
+
         else:
             sitepackages.append(prefix)
-            sitepackages.append(os.path.join(prefix, "lib", "site-packages"))
+            sitepackages.append(os.path.join(prefix, sys.lib, "site-packages"))
         if sys.platform == "darwin":
             # for framework builds *only* we add the standard Apple
             # locations.
Index: Lib/distutils/sysconfig.py
===================================================================
--- Lib/distutils/sysconfig.py
+++ Lib/distutils/sysconfig.py	2010-10-28 02:10:43.000000000 +0200
@@ -114,8 +114,12 @@
         prefix = plat_specific and EXEC_PREFIX or PREFIX
 
     if os.name == "posix":
+        if plat_specific:
+            lib = sys.lib
+        else:
+            lib = 'lib'
         libpython = os.path.join(prefix,
-                                 "lib", "python" + get_python_version())
+                                 lib, "python" + get_python_version())
         if standard_lib:
             return libpython
         else:
@@ -193,7 +197,8 @@
         else:
             inc_dir = project_base
     else:
-        inc_dir = get_python_inc(plat_specific=1)
+        prefix = EXEC_PREFIX or PREFIX
+        inc_dir = os.path.join(prefix, "include", "multiarch-" + sys.arch + "-linux", "python" + sys.version[:3])
     if get_python_version() < '2.2':
         config_h = 'config.h'
     else:
Index: Lib/distutils/tests/test_install.py
===================================================================
--- Lib/distutils/tests/test_install.py
+++ Lib/distutils/tests/test_install.py	2010-10-28 02:10:43.000000000 +0200
@@ -39,8 +39,9 @@
             self.assertEqual(got, expected)
 
         libdir = os.path.join(destination, "lib", "python")
+        platlibdir =  os.path.join(destination, sys.lib, "python")
         check_path(cmd.install_lib, libdir)
-        check_path(cmd.install_platlib, libdir)
+        check_path(cmd.install_platlib, platlibdir)
         check_path(cmd.install_purelib, libdir)
         check_path(cmd.install_headers,
                    os.path.join(destination, "include", "python", "foopkg"))
Index: Lib/distutils/command/install.py
===================================================================
--- Lib/distutils/command/install.py
+++ Lib/distutils/command/install.py	2010-10-28 02:10:43.000000000 +0200
@@ -22,6 +22,8 @@
 from site import USER_SITE
 
 
+libname = sys.lib
+
 if sys.version < "2.2":
     WINDOWS_SCHEME = {
         'purelib': '$base',
@@ -42,14 +44,14 @@
 INSTALL_SCHEMES = {
     'unix_prefix': {
         'purelib': '$base/lib/python$py_version_short/site-packages',
-        'platlib': '$platbase/lib/python$py_version_short/site-packages',
+        'platlib': '$platbase/'+libname+'/python$py_version_short/site-packages',
         'headers': '$base/include/python$py_version_short/$dist_name',
         'scripts': '$base/bin',
         'data'   : '$base',
         },
     'unix_home': {
         'purelib': '$base/lib/python',
-        'platlib': '$base/lib/python',
+        'platlib': '$base/'+libname+'/python',
         'headers': '$base/include/python/$dist_name',
         'scripts': '$base/bin',
         'data'   : '$base',
Index: Python/getplatform.c
===================================================================
--- Python/getplatform.c
+++ Python/getplatform.c	2010-10-28 02:10:43.000000000 +0200
@@ -10,3 +10,23 @@
 {
 	return PLATFORM;
 }
+
+#ifndef ARCH
+#define ARCH "unknown"
+#endif
+
+const char *
+Py_GetArch(void)
+{
+	return ARCH;
+}
+
+#ifndef LIB
+#define LIB "lib"
+#endif
+
+const char *
+Py_GetLib(void)
+{
+	return LIB;
+}
Index: Python/sysmodule.c
===================================================================
--- Python/sysmodule.c
+++ Python/sysmodule.c	2010-10-28 02:10:43.000000000 +0200
@@ -1472,6 +1472,10 @@
                         PyString_FromString(Py_GetPlatform()));
     SET_SYS_FROM_STRING("executable",
                         PyString_FromString(Py_GetProgramFullPath()));
+    SET_SYS_FROM_STRING("arch",
+		    	PyString_FromString(Py_GetArch()));
+    SET_SYS_FROM_STRING("lib",
+		    	PyString_FromString(Py_GetLib()));
     SET_SYS_FROM_STRING("prefix",
                         PyString_FromString(Py_GetPrefix()));
     SET_SYS_FROM_STRING("exec_prefix",
Index: Modules/getpath.c
===================================================================
--- Modules/getpath.c
+++ Modules/getpath.c	2010-10-28 02:10:43.000000000 +0200
@@ -116,9 +116,17 @@
 #define EXEC_PREFIX PREFIX
 #endif
 
+#ifndef LIB_PYTHON
+#if defined(__x86_64__) || defined(__powerpc64__)
+#define LIB_PYTHON "lib64/python" VERSION
+#else
+#define LIB_PYTHON "lib/python" VERSION
+#endif
+#endif
+
 #ifndef PYTHONPATH
-#define PYTHONPATH PREFIX "/lib/python" VERSION ":" \
-              EXEC_PREFIX "/lib/python" VERSION "/lib-dynload"
+#define PYTHONPATH PREFIX "/" LIB_PYTHON ":" \
+              EXEC_PREFIX "/" LIB_PYTHON "/lib-dynload"
 #endif
 
 #ifndef LANDMARK
@@ -129,7 +137,7 @@
 static char exec_prefix[MAXPATHLEN+1];
 static char progpath[MAXPATHLEN+1];
 static char *module_search_path = NULL;
-static char lib_python[] = "lib/python" VERSION;
+static char lib_python[] = LIB_PYTHON;
 
 static void
 reduce(char *dir)
Index: Include/pythonrun.h
===================================================================
--- Include/pythonrun.h
+++ Include/pythonrun.h	2010-10-28 02:10:43.000000000 +0200
@@ -108,6 +108,8 @@
 /* In their own files */
 PyAPI_FUNC(const char *) Py_GetVersion(void);
 PyAPI_FUNC(const char *) Py_GetPlatform(void);
+PyAPI_FUNC(const char *) Py_GetArch(void);
+PyAPI_FUNC(const char *) Py_GetLib(void);
 PyAPI_FUNC(const char *) Py_GetCopyright(void);
 PyAPI_FUNC(const char *) Py_GetCompiler(void);
 PyAPI_FUNC(const char *) Py_GetBuildInfo(void);
--- Lib/sysconfig.py.lib64-sysconfig	2010-07-08 14:18:41.386898476 -0400
+++ Lib/sysconfig.py	2010-07-08 14:22:02.837896461 -0400
@@ -7,20 +7,20 @@ from os.path import pardir, realpath
 
 _INSTALL_SCHEMES = {
     'posix_prefix': {
-        'stdlib': '{base}/lib/python{py_version_short}',
-        'platstdlib': '{platbase}/lib/python{py_version_short}',
+        'stdlib': '{base}/'+sys.lib+'/python{py_version_short}',
+        'platstdlib': '{platbase}/'+sys.lib+'/python{py_version_short}',
         'purelib': '{base}/lib/python{py_version_short}/site-packages',
-        'platlib': '{platbase}/lib/python{py_version_short}/site-packages',
+        'platlib': '{platbase}/'+sys.lib+'/python{py_version_short}/site-packages',
         'include': '{base}/include/python{py_version_short}',
         'platinclude': '{platbase}/include/python{py_version_short}',
         'scripts': '{base}/bin',
         'data': '{base}',
         },
     'posix_home': {
-        'stdlib': '{base}/lib/python',
-        'platstdlib': '{base}/lib/python',
+        'stdlib': '{base}/'+sys.lib+'/python',
+        'platstdlib': '{base}/'+sys.lib+'/python',
         'purelib': '{base}/lib/python',
-        'platlib': '{base}/lib/python',
+        'platlib': '{base}/'+sys.lib+'/python',
         'include': '{base}/include/python',
         'platinclude': '{base}/include/python',
         'scripts': '{base}/bin',
@@ -65,10 +65,10 @@ _INSTALL_SCHEMES = {
         'data'   : '{userbase}',
         },
     'posix_user': {
-        'stdlib': '{userbase}/lib/python{py_version_short}',
-        'platstdlib': '{userbase}/lib/python{py_version_short}',
+        'stdlib': '{userbase}/'+sys.lib+'/python{py_version_short}',
+        'platstdlib': '{userbase}/'+sys.lib+'/python{py_version_short}',
         'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
-        'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
+        'platlib': '{userbase}/'+sys.lib+'/python{py_version_short}/site-packages',
         'include': '{userbase}/include/python{py_version_short}',
         'scripts': '{userbase}/bin',
         'data'   : '{userbase}',