Make sure HarfBuzz module depends on Graphite

Change-Id: I9c1cc9c679ceebeb4e5cd898876aaa7b61c18f17

RepositoryExternal.mk

@@ -1368,6 +1368,8 @@ $(call gb_LinkTarget_add_libs,$(1),$(GRAPHITE_LIBS))
 
 endef
 
+gb_ExternalProject__use_graphite:=
+
 else # !SYSTEM_GRAPHITE
 
 define gb_LinkTarget__use_graphite
@@ -1382,6 +1384,10 @@ $(call gb_LinkTarget_use_static_libraries,$(1),\
 
 endef
 
+define gb_ExternalProject__use_graphite
+$(call gb_ExternalProject_use_external_project,$(1),graphite)
+
+endef
 endif # SYSTEM_GRAPHITE
 
 ifneq ($(SYSTEM_ICU),)

external/harfbuzz/ExternalProject_harfbuzz.mk

@@ -17,6 +17,7 @@ $(eval $(call gb_ExternalProject_register_targets,harfbuzz,\
 
 $(eval $(call gb_ExternalProject_use_externals,harfbuzz,\
 	icu \
+	graphite \
 ))
 
 $(call gb_ExternalProject_get_state_target,harfbuzz,build) :