_DEPENDS+= and make index speed
matthew at FreeBSD.org
Sun Mar 25 17:34:00 UTC 2012
On 25/03/2012 17:22, Michael Scheidell wrote:
> I don't think it hurts anything but if you have a bunch of ports
> doing this, doesn't it have to slow down make index? The extra check
> for, reassign and cat an undefined var has to take more cpu than a
> strict assign, right or am I just nitpicking?
Unlikely to make a significant difference. Most of the time in building
the INDEX is spent doing file IO -- opening all those Makefiles, and the
files they include, etc., ad nauseam. -- and then parsing the thousands
of lines of make code. And then doing all over again for the next port.
Couple of assignments using += in a couple of port specific Makefiles
isn't much compared to that.
Dr Matthew J Seaman MA, D.Phil.
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