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Subject: Portable mktemp invocation?
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Hi,

We use `mktemp' or `mktemp -d' (with no argument) in the shell scripts:

- grub-core/genmod.sh.in
- tests/util/grub-shell.in
- tests/util/grub-shell-tester.in
- tests/grub_script_blockarg.in
- tests/partmap_test.in
- util/powerpc/ieee1275/grub-mkrescue.in

But such invocations of mktemp fail on some systems (NetBSD, and,
according to their man pages, FreeBSD and MacOS X).

A simple solution would be to replace those invocations with:

mktemp [-d] ${TMPDIR:-/tmp}/tmp.XXXXXXXXXX

What do you think?  Is there a better alternative?

Grégoire