[OE-core] [PATCH v2] python: Fix PGEN linking errors

[Alejandro Hernandez]

Parallel make races when linking PGEN affects target's python
compilation as well, adds patch from python-native to modify the
Makefile and avoid parallel make races, also updates upstream status

Signed-off-by: Alejandro Hernandez <alejandro.hernandez at linux.intel.com>
---
 .../avoid_parallel_make_races_on_pgen.patch        |  2 +-
 .../python/avoid_parallel_make_races_on_pgen.patch | 27 ++++++++++++++++++++++
 meta/recipes-devtools/python/python_2.7.9.bb       |  1 +
 3 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-devtools/python/python/avoid_parallel_make_races_on_pgen.patch

diff --git a/meta/recipes-devtools/python/python-native/avoid_parallel_make_races_on_pgen.patch b/meta/recipes-devtools/python/python-native/avoid_parallel_make_races_on_pgen.patch
index 1a8f68e..5279e7c 100644
--- a/meta/recipes-devtools/python/python-native/avoid_parallel_make_races_on_pgen.patch
+++ b/meta/recipes-devtools/python/python-native/avoid_parallel_make_races_on_pgen.patch
@@ -1,4 +1,4 @@
-Upstream-Status: Inappropriate [embedded specific]
+Upstream-Status: Pending
 
 Avoids parallel make races linking errors when making Parser/PGEN
 
diff --git a/meta/recipes-devtools/python/python/avoid_parallel_make_races_on_pgen.patch b/meta/recipes-devtools/python/python/avoid_parallel_make_races_on_pgen.patch
new file mode 100644
index 0000000..e9bae32
--- /dev/null
+++ b/meta/recipes-devtools/python/python/avoid_parallel_make_races_on_pgen.patch
@@ -0,0 +1,27 @@
+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 at linuxfoundation.org>
+Signed-Off-By: Alejandro Hernandez <alejandro.hernandez at 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
+@@ -611,12 +611,10 @@ 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)
+ 		$(HOSTPGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
+ $(GRAMMAR_C): $(GRAMMAR_H) $(GRAMMAR_INPUT) $(PGENSRCS)
+-		$(MAKE) $(GRAMMAR_H)
+ 		touch $(GRAMMAR_C)
+ 
+ $(PGEN):	$(PGENOBJS)
diff --git a/meta/recipes-devtools/python/python_2.7.9.bb b/meta/recipes-devtools/python/python_2.7.9.bb
index 4087c2c..6d5b42a 100644
--- a/meta/recipes-devtools/python/python_2.7.9.bb
+++ b/meta/recipes-devtools/python/python_2.7.9.bb
@@ -25,6 +25,7 @@ SRC_URI += "\
   file://run-ptest \
   file://parallel-makeinst-create-bindir.patch \
   file://use_sysroot_ncurses_instead_of_host.patch \
+  file://avoid_parallel_make_races_on_pgen.patch \
 "
 
 S = "${WORKDIR}/Python-${PV}"
-- 
1.9.1