+generated_files = config.h tm.h $(TM_P_H) $(TM_H) multilib.h \
+ $(simple_generated_h) $(simple_generated_c) specs.h \
+ tree-check.h genrtl.h insn-modes.h tm-preds.h tm-constrs.h \
+ $(ALL_GTFILES_H) gtype-desc.c gtype-desc.h gcov-iov.h
+
+# In order for parallel make to really start compiling the expensive
+# objects from $(OBJS-common) as early as possible, build all their
+# prerequisites strictly before all objects.
+$(ALL_HOST_OBJS) : | $(generated_files)
+