Date: Tue, 22 Jul 2003 12:26:03 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: kientzle@acm.org Cc: current@freebsd.org Subject: Re: Buildworld fails in 5.1 Message-ID: <20030722.122603.65161896.imp@bsdimp.com> In-Reply-To: <3F1C18CB.6030201@acm.org> References: <3F1C1695.30409@acm.org> <20030721163719.GI12996@roark.gnf.org> <3F1C18CB.6030201@acm.org>
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In message: <3F1C18CB.6030201@acm.org>
Tim Kientzle <kientzle@acm.org> writes:
: Gordon Tetlow wrote:
: > On Mon, Jul 21, 2003 at 09:36:37AM -0700, Tim Kientzle wrote:
: >>Hmmm... Is that what .ORDER is for? To work around a
: >>parallel make that gratuitously rebuilds things?
: >
: > Right it serializes build dependencies. The problem with crunchgen ...
:
: I would argue "the problem with make"... ;-) I think it's pretty
: clear that
:
: a b c: foo
: buildabc
:
: does not require that 'buildabc' be run three times. Make
: should be able to note that 'buildabc' was already spawned
: for 'a' and just add 'b' and 'c' to the wait list for
: that operation, rather than running additional copies.
That's not how make works.
a b c: foo
buildabc
is the same as:
a: foo
buildabc
b: foo
buildabc
c: foo
buildabc
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