--- file_not_specified_in_diff	
+++ file_not_specified_in_diff	
@@ -, +, @@ 
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -952,25 +952,25 @@ libinstall:
 		$(INSTALL_DATA) $(srcdir)/Modules/xxmodule.c \
 			$(DESTDIR)$(LIBDEST)/distutils/tests ; \
 	fi
-	PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
+	PYTHONPATH=$(HOSTPYTHONPATH):$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
 		./$(HOSTPYTHON) -Wi -tt $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \
 		-x 'bad_coding|badsyntax|site-packages|lib2to3/tests/data' \
 		$(DESTDIR)$(LIBDEST)
-	PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
+	PYTHONPATH=$(HOSTPYTHONPATH):$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		./$(HOSTPYTHON) -Wi -tt -O $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \
 		-x 'bad_coding|badsyntax|site-packages|lib2to3/tests/data' \
 		$(DESTDIR)$(LIBDEST)
-	-PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
+	-PYTHONPATH=$(HOSTPYTHONPATH):$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
 		./$(HOSTPYTHON) -Wi -t $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST)/site-packages -f \
 		-x badsyntax $(DESTDIR)$(LIBDEST)/site-packages
-	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
+	-PYTHONPATH=$(HOSTPYTHONPATH):$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		./$(HOSTPYTHON) -Wi -t -O $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST)/site-packages -f \
 		-x badsyntax $(DESTDIR)$(LIBDEST)/site-packages
-	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
+	-PYTHONPATH=$(HOSTPYTHONPATH):$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
 		./$(HOSTPYTHON) -Wi -t -c "import lib2to3.pygram, lib2to3.patcomp;lib2to3.patcomp.PatternCompiler()"
 
 # Create the PLATDIR source directory, if one wasn't distributed..