From owner-freebsd-current Fri Oct 16 20:41:36 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id UAA22632 for freebsd-current-outgoing; Fri, 16 Oct 1998 20:41:36 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from shrimp.dataplex.net (shrimp.dataplex.net [208.2.87.3]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA22626; Fri, 16 Oct 1998 20:41:31 -0700 (PDT) (envelope-from rkw@Dataplex.NET) Received: from [208.2.87.5] (user5.dataplex.net [208.2.87.5]) by shrimp.dataplex.net (8.9.1/8.9.1) with ESMTP id BAA25854; Sat, 17 Oct 1998 01:21:01 -0500 (CDT) (envelope-from rkw@dataplex.net) X-Sender: rkw@mail.dataplex.net Message-Id: In-Reply-To: <98Oct16.232938edt.37814-16861@qew.cs.toronto.edu> References: from "Richard Wackerbarth" at Oct 16, 98 11:06:46 pm Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Date: Fri, 16 Oct 1998 22:36:19 -0500 To: David Holland From: Richard Wackerbarth Subject: Re: Never ending 'make clean' in kde port? Cc: dholland@cs.toronto.edu, asami@FreeBSD.ORG, kpielorz@tdx.co.uk, eivind@yes.no, current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG At 10:29 PM -0500 10/16/98, David Holland wrote: > > > > At 9:17 PM -0500 10/16/98, David Holland wrote: > > > > This is a clear case of the evils of "recursive make". > > > > http://www.canb.auug.org.au/~millerp/rmch/recu-make-cons-harm.html > > > > > >While this guy has some points, his assertion that it's always faster > > >to have one makefile is completely false - I broke netbsd's libc into > > >recursive makes at one point and it got a lot faster. > > > > > >Why? Probably because some of the operations on the dependency graph > > >are slower than O(n). > > > > I think that his comparison was based, in part, on the idea that you > > have to do many things repeatedly simply because you do not have the > > proper dependencies available. > >This is sometimes true, but in my experience it really doesn't happen >very often. > >*shrug* I disagree. Just look at the convoluted structure of "make world" or, the "make clean" in ports. Or just try (cd /usr/src; make ; make) I see it far too often. :-( Richard Wackerbarth To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message