+# Sparc cannot link shared libraries (libtool problem?) which Stacker uses
+ifeq ($(ARCH), Sparc)
+DIRS := $(filter-out Stacker, $(DIRS))
+DIRS := $(filter-out sample, $(DIRS))
+endif
+
+
+# Universal builds can't build stacker, which uses llvm-gcc -S.
+ifdef UNIVERSAL
+DIRS := $(filter-out Stacker, $(DIRS))
+endif
+
+include $(PROJ_SRC_ROOT)/Makefile.rules