lang/gcc46 building stuff in $TMPDIR

[Gerald Pfeifer]

On Sun, 29 Jul 2012, Doug Barton wrote:
>>> My suggestion would be to create a directory in $WRKDIR and assign 
>>> $TMP (or whatever the right envar is) to it.
>> That could be done, but has one significant drawback: those of us
>> who have /tmp on fastest storage, and $WRKDIR on slower storage,
>> could lose a lot of speed.
> Have you measured that?

1:15:27 for a full build of lang/gcc48 when /tmp was used, versus
1:34:25 on the same system when TMPDIR was set to a network drive.

This is just one scenario, and it may go both ways.  It does show
that having temporary files on fast storage is significant.

[i386 host, build including Java, storage on spindles.]

>> Finally, you indicated that you also saw Java create a large
>> temporary file.  If you want to avoid building Java, the GCC
>> ports have an option to disable Java.
> Reducing functionality to handle build infrastructure problems is
> not a desirable solution. But thanks for the response in any case. :)

Reducing functionality if that cuts the cost of building in half
and you do not actually use that functionality (only a single port
does, from what I know) actually looks quite desirable to me. ;-)

Gerald