UB.first = $(word 1,$(UB.archs))
UB.other = $(wordlist 2,999,$(UB.archs))
-UB.BUILD = $(SRC/)configure --build=ub.$(1) --arch=$(1) --launch --launch-quiet
+UB.BUILD = $(SRC/)configure --force --build=ub.$(1) --arch=$(1) --launch --launch-quiet
## linefeed is important
define UB.BUILD.item
- $(call UB.BUILD,$(1))
+ $(call UB.BUILD,$(1)) --launch-jobs=0
endef