On Sat, Dec 15, 2012 at 09:35:18AM -0500, Paul Smith wrote: > On Fri, 2012-12-14 at 17:07 +0200, Eli Zaretskii wrote: > > Does it even make sense to use -j with no arguments? Should we > > perhaps remove that possibility, or have some internal sane limit, > > like twice the number of cores, say? > > In general I'd say no, the current behavior is not ideal. However I > don't want to remove the behavior. I'd rather have the default, if > given no argument, choose a "sane" limit. However, how does one detect > the number of cores on a system in a portable way? It's easy enough on > Linux but...
gnulib has a nproc module that can "detect the number of processors": http://git.savannah.gnu.org/cgit/gnulib.git/tree/modules/nproc Judging from the number of #if's in its implementation it must be quite portable. :) -- ldv
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