Date: Tue, 22 May 2007 17:34:32 +0400 From: "Andrew Pantyukhin" <infofarmer@FreeBSD.org> To: "Stephen Montgomery-Smith" <stephen@math.missouri.edu> Cc: ports@freebsd.org, Alexander Leidinger <Alexander@leidinger.net>, Kris Kennaway <kris@obsecurity.org> Subject: Re: More speed increases for make-ing ports Message-ID: <cb5206420705220634m24ef4430u377eecbdfd2715b@mail.gmail.com> In-Reply-To: <4652EC0C.8030604@math.missouri.edu> References: <465291FB.4010901@math.missouri.edu> <20070522071941.GB59910@xor.obsecurity.org> <cb5206420705220055x708caacdk766a19757c575981@mail.gmail.com> <20070522110359.dwce59oaowkc400o@webmail.leidinger.net> <cb5206420705220322n70b8e502l1f6de6b5564cd4b1@mail.gmail.com> <4652EC0C.8030604@math.missouri.edu>
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On 5/22/07, Stephen Montgomery-Smith <stephen@math.missouri.edu> wrote: > Andrew Pantyukhin wrote: > > On 5/22/07, Alexander Leidinger <Alexander@leidinger.net> wrote: > >> Quoting Andrew Pantyukhin <infofarmer@FreeBSD.org> (from Tue, 22 May > >> 2007 11:55:39 +0400): > >> > >> > On 5/22/07, Kris Kennaway <kris@obsecurity.org> wrote: > >> >> On Tue, May 22, 2007 at 01:47:23AM -0500, Stephen Montgomery-Smith > >> wrote: > >> >>> This small modification cuts off about 25% off pkg_version on my > >> system. > >> >>> > >> >>> Basically bsd.gnome.mk recursively finds all the dependencies, but > >> many > >> >>> of them are listed many times. This makes make work extra hard > >> when it > >> >>> doesn't have to. I simply weed out the repeated entries. > >> >>> > >> >> > >> >>> --- bsd.gnome.mk-orig Tue May 22 01:29:08 2007 > >> >>> +++ bsd.gnome.mk Tue May 22 01:29:22 2007 > >> >>> @@ -655,6 +655,8 @@ > >> >>> _USE_GNOME+= ${${component}_USE_GNOME_IMPL} ${component} > >> >>> . endfor > >> >>> > >> >>> +_USE_GNOME!=(for i in ${_USE_GNOME}; do ${ECHO_CMD} $$i; done) | > >> sort -u > >> >>> + > >> >>> # Setup the GTK+ API version for pixbuf loaders, input method > >> modules, > >> >>> # and theme engines. > >> >>> PLIST_SUB+= GTK2_VERSION="${GTK2_VERSION}" > >> >> > >> >> Be careful, != assignments may add thousands of process invocations to > >> >> large targets like 'make index' and can slow it down dramatically. > >> > > >> > Right, and uniqueness logic can be implemented in make. > >> > >> Be proactive and tell/point out how... :) > > > > TMTOWTDI. There are several examples in bsd.*.mk. The > > obvious one is "flags" (you set or unset flag vars > > first, then traverse them and add what you need to > > the list). In recent versions of our make you can > > also use ${VAR:O:u} > > I must admit I was looking for the :u. Definitely a good feature - > maybe it could be invoked in the make file conditional on an appropriate > value of OSVERSION. > > Incidently if you want to save a few more != assignments, I notice that > setting the variables > ARCH=i386 > OPSYS=FreeBSD > OSREL=6.2 > OSVERSION=602110 > in /etc/make.conf will do this for you. A seemingly better way may be to make these system vars available in make by default. They may even be compiled in - to achieve virtually no performance impact (except for a bit larger default var table).
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