diff --git a/Makefile.in b/Makefile.in
index 0e7d46e43c5..48a12933105 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -216,17 +216,6 @@ include $(S)mk/rustpkg.mk
 $(foreach submodule,$(SUBMODULES_RUSTPKG),\
 $(eval $(call DEF_SUBMODULE_RUSTPKG_RULES,$(submodule))))
 
-# rust-opengles needs some extra build options
-
-ifeq ($(shell uname -s),Darwin)
-ifeq ($(shell sw_vers | grep -c 10.6),1)
-EXTRA_RFLAGS_rust-opengles += --cfg mac_10_6
-endif
-ifeq ($(shell sw_vers | grep -c 10.7),1)
-EXTRA_RFLAGS_rust-opengles += --cfg mac_10_7
-endif
-endif
-
 DONE_SUBMODULES = $(foreach submodule,$(SUBMODULES),$(DONE_$(submodule)))
 DONE_SUBMODULES_RUSTPKG = $(foreach submodule,$(SUBMODULES_RUSTPKG),$(DONE_$(submodule)))
 
diff --git a/mk/rustpkg.mk b/mk/rustpkg.mk
index 29a1bad8cb5..2088f03ac7e 100644
--- a/mk/rustpkg.mk
+++ b/mk/rustpkg.mk
@@ -12,6 +12,16 @@ DO_CLEAN_$(1) = rm -rf $$(DONE_$(1)) $(CFG_BUILD_HOME)/workspace/build/$(CFG_TAR
 
 EXTRA_RFLAGS_$(1) =
 
+ifeq ($(shell uname -s),Darwin)
+ifeq ($(shell sw_vers | grep -c 10.6),1)
+EXTRA_RFLAGS_$(1) += --cfg mac_10_6
+endif
+ifeq ($(shell sw_vers | grep -c 10.7),1)
+EXTRA_RFLAGS_$(1) += --cfg mac_10_7
+endif
+else
+endif
+
 clean-$(1) :
 	$$(Q) $$(DO_CLEAN_$(1))
 .PHONY : clean-$(1)