diff -r 351ad8c4f3a6 Makefile.pre.in
--- a/Makefile.pre.in	Wed Apr 22 18:36:44 2015 -0400
+++ b/Makefile.pre.in	Thu Apr 23 13:38:50 2015 +0900
@@ -213,7 +213,6 @@
 LIBOBJDIR=	Python/
 LIBOBJS=	@LIBOBJS@
 
-PYTHON=		python$(EXE)
 BUILDPYTHON=	python$(BUILDEXE)
 
 PYTHON_FOR_BUILD=@PYTHON_FOR_BUILD@
@@ -341,6 +340,10 @@
 ASDLGEN=	@ASDLGEN@ $(srcdir)/Parser/asdl_c.py
 
 ##########################################################################
+# Typeslots
+TYPESLOTSGEN=	@TYPESLOTSGEN@ $(srcdir)/Objects/typeslots.py
+
+##########################################################################
 # Python
 
 OPCODETARGETS_H= \
@@ -834,7 +837,7 @@
 
 Objects/typeobject.o: Objects/typeslots.inc
 Objects/typeslots.inc: $(srcdir)/Include/typeslots.h $(srcdir)/Objects/typeslots.py
-	$(PYTHON) $(srcdir)/Objects/typeslots.py < $(srcdir)/Include/typeslots.h > Objects/typeslots.inc
+	$(TYPESLOTSGEN) < $(srcdir)/Include/typeslots.h > Objects/typeslots.inc
 
 ############################################################################
 # Header files
diff -r 351ad8c4f3a6 configure
--- a/configure	Wed Apr 22 18:36:44 2015 -0400
+++ b/configure	Thu Apr 23 13:38:50 2015 +0900
@@ -674,6 +674,7 @@
 INSTALL_SCRIPT
 INSTALL_PROGRAM
 PYTHON
+TYPESLOTSGEN
 ASDLGEN
 ac_ct_READELF
 READELF
@@ -6016,6 +6017,7 @@
 
 
 
+
 for ac_prog in python$PACKAGE_VERSION python3 python
 do
   # Extract the first word of "$ac_prog", so it can be a program name with args.
@@ -6061,8 +6063,10 @@
 
 if test "$PYTHON" = not-found; then
     ASDLGEN="@echo python: $PYTHON! cannot run \$(srcdir)/Parser/asdl_c.py #"
+    TYPESLOTSGEN="@echo python: $PYTHON! cannot run \$(srcdir)/Objects/typeslots.py #"
 else
     ASDLGEN="$PYTHON"
+    TYPESLOTSGEN="$PYTHON"
 fi
 
 
diff -r 351ad8c4f3a6 configure.ac
--- a/configure.ac	Wed Apr 22 18:36:44 2015 -0400
+++ b/configure.ac	Thu Apr 23 13:38:50 2015 +0900
@@ -1035,11 +1035,14 @@
 AC_SUBST(READELF)
 
 AC_SUBST(ASDLGEN)
+AC_SUBST(TYPESLOTSGEN)
 AC_CHECK_PROGS(PYTHON, python$PACKAGE_VERSION python3 python, not-found)
 if test "$PYTHON" = not-found; then
     ASDLGEN="@echo python: $PYTHON! cannot run \$(srcdir)/Parser/asdl_c.py #"
+    TYPESLOTSGEN="@echo python: $PYTHON! cannot run \$(srcdir)/Objects/typeslots.py #"
 else
     ASDLGEN="$PYTHON"
+    TYPESLOTSGEN="$PYTHON"
 fi