Workaround for lack of "-Wl,--whole-archive" in MacOS's linker.

Change-Id: I2b1de0a253d341bcb7ee05fdc96bdc0d0967985e
diff --git a/core/combo/HOST_darwin-x86.mk b/core/combo/HOST_darwin-x86.mk
index 54a64a3..f5fd001 100644
--- a/core/combo/HOST_darwin-x86.mk
+++ b/core/combo/HOST_darwin-x86.mk
@@ -63,14 +63,34 @@
 
 HOST_CUSTOM_LD_COMMAND := true
 
+# Workaround for lack of "-Wl,--whole-archive" in MacOS's linker.
+define _darwin-extract-and-include-single-whole-static-lib
+@echo "preparing StaticLib: $(PRIVATE_MODULE) [including $(1)]"
+$(hide) ldir=$(PRIVATE_INTERMEDIATES_DIR)/WHOLE/$(basename $(notdir $(1)))_objs;\
+    mkdir -p $$ldir; \
+    filelist=; \
+    for f in `$(TARGET_AR) t $(1)`; do \
+        $(TARGET_AR) p $(1) $$f > $$ldir/$$f; \
+        filelist="$$filelist $$ldir/$$f"; \
+    done ;
+
+endef
+
+define darwin-extract-and-include-whole-static-libs
+$(if $(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES), $(hide) rm -rf $(PRIVATE_INTERMEDIATES_DIR)/WHOLE)
+$(foreach lib,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES), \
+    $(call _darwin-extract-and-include-single-whole-static-lib, $(lib)))
+endef
+
 define transform-host-o-to-shared-lib-inner
+$(call darwin-extract-and-include-whole-static-libs)
 $(hide) $(PRIVATE_CXX) \
         -dynamiclib -single_module -read_only_relocs suppress \
         $(HOST_GLOBAL_LD_DIRS) \
         $(HOST_GLOBAL_LDFLAGS) \
         $(PRIVATE_ALL_OBJECTS) \
+        $(if $(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES), `find $(PRIVATE_INTERMEDIATES_DIR)/WHOLE -name '*.o' 2>/dev/null`) \
         $(call normalize-host-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \
-        $(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \
         $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--start-group) \
         $(call normalize-host-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \
         $(if $(PRIVATE_GROUP_STATIC_LIBRARIES),-Wl$(comma)--end-group) \