On Thu, 23 Jan 2014, Kevin Oberman wrote: > On Thu, Jan 23, 2014 at 7:47 AM, Thomas Hoffmann <trh411_at_gmail.com> wrote: > On Thu, Jan 23, 2014 at 9:56 AM, Warren Block <wblock_at_wonkity.com> wrote: > > > > > > Using -DNOCLEAN with an existing /usr/obj can go even faster than ccache: > > less than two minutes for a buildworld on my frequently updated i5/SSD > > system, sometimes less than one minute. > > > Can you elaborate on this, please? I always clear my /usr/obj before > starting a buildworld, which takes 2 hours to run on my system. Are you > saying if I do "make -DNOCLEAN buildworld" I do not have to clear /usr/obj > first Yes. Removing /usr/obj is a faster way of doing 'make clean', mostly. > AND my buildworld will run faster Yes, because make will see that many/most files have already been built. > (AND with no downside)? Well... mostly. :) I noticed that after 10.0-RELEASE, uname on my system still said "PRERELEASE". That code had not been rebuilt because make did not see it as needing a rebuild. You can still delete /usr/obj and run a full buildworld from scratch every so often. I should give credit to bdrewery_at_ for reminding me about -DNOCLEAN when I was whining about ccache not working on 10.0. It turned out to be a better solution.Received on Thu Jan 23 2014 - 15:52:57 UTC
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