Date: Wed, 25 Feb 1998 16:27:24 -0800 (PST) From: "Michael V. Harding" <mvh@netcom.com> To: freebsd-stable@FreeBSD.ORG Subject: A 'make world' suggestion... Message-ID: <199802260027.QAA02724@netcom1.netcom.com>
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The following occurred to me while after doing a 'make -DNOCLEAN
buildworld' on a populated /usr/obj with only one file change:
for my system, (K6 200, IDE) the timing goes as follows for a 'make
buildworld':
1. ~2.5 hrs: a regular 'make buildworld'
2. ~1.5 hrs: 'make -DNOCLEAN buildworld' with an empty /usr/src/obj
tree, including (parallel) removal of the old /usr/src/obj data.
3. ~1.0 hrs: 'make buildworld' with a populated /usr/src/obj
Option 2 is all I use - it saves an hour and does a complete build.
Option 3 is 'risky' and not worth the extra half hour. Option 1
provides no benefit over option 2.
Could we codify option 2 with a -DQUICKCLEAN flag or something, where
the steps I do by hand are incorporated into the makefile? The only
difference would be that a 'rm -rf /usr/src' would get done at the
beginning, and the rest would work like a -DNOCLEAN.
Also, could the following line be done at the END of installworld, or
of buildworld, so that it's possible to remove the object tree with a
simple 'rm -rf /usr/src/obj/*' ?
chflags -R noschg ${WORLDTMP}/
The flags could be set in 'installworld' rather than 'buildworld', and
reset after the install...
Thanks,
Mike Harding
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