Setting GOTMPDIR

[Jonathan Perkin <jperkin%mnx.io@localhost>]

sysutils/packer currently fails for me due to my limit of 1GB on the 
size of /tmp ramdisks.  It's unclear to me what the difference is 
between GOTMPDIR and GOCACHE (which we already set), but I'd like to 
also set GOTMPDIR to the same location to avoid this, as I don't feel 
that 1GB is an unreasonable limit.

The problem is that go only cleans up at the end of a complete build 
phase rather than for each object, so it's not really similar in the way 
you'd expect TMPDIR to be used by any other compiler.

It's getting close to freeze time, so despite this seeming to be a 
trivial change I'd just like to confirm I'm not going to break anything 
in surprising ways, i.e. applying this change:

  --- a/lang/go/go-module.mk
  +++ b/lang/go/go-module.mk
   MAKE_ENV+=     GOCACHE=${WRKDIR}/.cache/go-build
  +MAKE_ENV+=     GOTMPDIR=${WRKDIR}/.cache/go-build

and the same for go-package.mk.

Thanks,

--
Jonathan Perkin   -   mnx.io   -   pkgsrc.smartos.org
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