Messages in this thread | | | Date | Tue, 8 Feb 2005 12:04:01 -0500 | From | Ryan Anderson <> | Subject | Re: [PATCH] Makefiles are not built using a Fortran compiler |
| |
On Tue, Feb 08, 2005 at 03:44:17PM +0000, Matthew Wilcox wrote: > On Tue, Feb 08, 2005 at 01:23:48PM +0100, Roman Zippel wrote: > > Enabling the following in the Makefile should have the same effect: > > > > # For maximum performance (+ possibly random breakage, uncomment > > # the following) > > > > #MAKEFLAGS += -rR > > This reduces the debug output even further (and size of debug output is > strongly correlated with time taken to do a null build): > > -rw-r--r-- 1 willy willy 65582214 2005-02-07 21:13 vanilla.debug > -rw-r--r-- 1 willy willy 51413770 2005-02-07 22:17 nosuffixes.debug > -rw-r--r-- 1 willy willy 37245484 2005-02-08 09:56 maxperf.debug > > Seems like it gets rid of the RCS and SCCS rules -- certainly a big > improvement, and I'm not sure anyone really uses those rules. Can we > perhaps uncomment this line at the beginning of 2.6.12 and see if anyone > complains? This should reduce make overhead by 30-40% which is really > worth doing.
The BitKeeper users sometimes make use of the SCCS rules.
BK installs itself in such a way as to provide the SCCS commands, and Make will update things if you forget to do a bk -r get -Sq after a pull.
From a totally clean tree, this doesn't work (I forget why, offhand, but I think it's something to do with the *config targets), but it is helpful at times from partially clean trees to automatically "get" from the SCCS copy of the file.
--
Ryan Anderson sometimes Pug Majere - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |