diff --git a/projects/Stacker/lib/Makefile b/projects/Stacker/lib/Makefile
index a302a85ef51..bee436b83fb 100644
--- a/projects/Stacker/lib/Makefile
+++ b/projects/Stacker/lib/Makefile
@@ -7,4 +7,9 @@
 LEVEL = ..
 DIRS = compiler runtime
 
+# Don't generate the runtime if we don't have LLVMGCC
+ifeq ($(LLVMGCC),)
+  DIRS := $(filter-out runtime, $(DIRS))
+endif
+
 include $(LEVEL)/Makefile.common