Totally unscientific single datapoint experiment:
$ make clean
$ git checkout nom -- tools/build/Makefile.in
$ perl Configure.pl --with-nqp=...
$ time make
real 4m41.253s
user 4m34.212s
sys 0m4.435s
$ make clean
$ git checkout target-pbc -- tools/build/Makefile.in
$ perl Configure.pl --with-nqp=...
$ time make
real 4m20.085s
user 4m14.346s
sys 0m3.959s
Your mileage may vary when under memory pressure, so feel free to
conduct your own experiments.
-- gerdr
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