[Bug 14838] TMPDIR environment variable is not used at all

https://bugs.winehq.org/show_bug.cgi?id=14838

--- Comment #9 from Austin English  ---
(In reply to Sebastian Lackner from comment #8)
> For libwine: What about testing if /tmp exists, then falling back to the
> Android code path if it doesn't? As already mentioned on IRC, there are some
> users frequently reporting issues, because their distro doesn't have /tmp,
> and would be nice if Wine could work out of the box without recompiling.

See also bug 39013, where a user has /tmp set to writable only by root.