add new gen/ directory for generated sources
Allow modules to generate source into $OUT/gen, which will then
be copied into $OUT/obj and $OUT/obj_$(TARGET_2ND_ARCH) as
necessary. This allows a single build rule invocation that includes
generated source to build for the first and second architectures.
Modules will need to change calls to local-intermediates-dir into
local-generated-sources-dir.
Change-Id: I62504bad9454b3d9fde7b84ab9f0a487a2ecf0bf
diff --git a/core/base_rules.mk b/core/base_rules.mk
index ac126a7..63abb8d 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -145,6 +145,7 @@
intermediates := $(call local-intermediates-dir,,$(LOCAL_2ND_ARCH_VAR_PREFIX))
intermediates.COMMON := $(call local-intermediates-dir,COMMON)
+generated_sources_dir := $(call local-generated-sources-dir)
###########################################################
# Pick a name for the intermediate and final targets