Re: [gentoo-portage-dev] [PATCH] emake: explicitly set SHELL

[Mike Gilbert]

On Mon, Jul 25, 2022 at 11:28 AM Fabian Groffen <grobian@g.o> wrote:
>
> bin/ebuild-helpers/emake: force SHELL to be set
>
> On Prefix systems /bin/sh can be anything, including very ancient.  So
> ensure we're running with bash, since that's what Gentoo Linux is
> expecting /bin/sh to be (by default, at least).
>
> Provide a fallback for the (near impossible) case that we use a bash
> that doesn't set BASH, or when we don't use bash at all.  This is not
> expected, though, as we explicitly require bash throughout all Portage,
> so we don't really care about using a non-Prefixed one, for this really
> shouldn't happen.

I'm a little on the fence about this: in theory, Makefiles should use
POSIX-compatible shell commands unless the author explicitly chooses
to use bash.

I guess we can get away with this since ebuilds always require bash anyway.