PARALLEL_RUN=no
endif
-# mvo: commented out, lead to build failures in the arch-build target
-#ifndef PARALLEL_RUN
-# PARALLEL_RUN=yes
-# .EXPORT: PARALLEL_RUN
-# # handle recursion
-# ifneq ($(NUM_PROCS),)
-# MAKEFLAGS += -j $(NUM_PROCS)
-# endif
-#endif
+ifndef PARALLEL_RUN
+ PARALLEL_RUN=yes
+ export PARALLEL_RUN
+ # handle recursion
+ ifneq ($(NUM_PROCS),)
+ MAKEFLAGS += -j $(NUM_PROCS)
+ endif
+endif