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Upstream-Status: Pending

Avoids parallel make races linking errors when making Parser/PGEN

- Implements Richard Purdie's idea

Signed-Off-By: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-Off-By: Alejandro Hernandez <alejandro.hernandez@linux.intel.com>

Index: Python-2.7.9/Makefile.pre.in
===================================================================
--- Python-2.7.9.orig/Makefile.pre.in
+++ Python-2.7.9/Makefile.pre.in
@@ -610,12 +610,10 @@ Modules/grpmodule.o: $(srcdir)/Modules/g
 
 Modules/pwdmodule.o: $(srcdir)/Modules/pwdmodule.c $(srcdir)/Modules/posixmodule.h
 
-$(GRAMMAR_H): $(GRAMMAR_INPUT) $(PGENSRCS)
+$(GRAMMAR_H): $(GRAMMAR_INPUT) $(PGENSRCS) $(PGEN)
 		@$(MKDIR_P) Include
-		$(MAKE) $(PGEN)
 		$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
 $(GRAMMAR_C): $(GRAMMAR_H) $(GRAMMAR_INPUT) $(PGENSRCS)
-		$(MAKE) $(GRAMMAR_H)
 		touch $(GRAMMAR_C)
 
 $(PGEN):	$(PGENOBJS)