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Subject: The right way to invoke sh from a freebsd makefile?
From: Ian Lepore <ian@FreeBSD.org>
To: FreeBSD Hackers <freebsd-hackers@FreeBSD.org>, freebsd-current
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Date: Sun, 22 Sep 2013 17:18:25 -0600
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What's the right way to launch the bourne shell from a makefile?  I had
assumed the ${SHELL} variable would be set to "the right" copy
of /bin/sh (like maybe the one in tmp or legacy at various stages).  It
appears that that's not the case, and ${SHELL} is whatever comes from
the environment, which can lead to using csh or bash or whatever.

I see some of our makefiles use just a bare "sh" which seems reasonable
to me, but I don't want to glitch this in src/include/Makefile again.
The goal is to run a script in src/include/Makefile by launching sh with
the script name (as opposed to launching the script and letting the #!
do its thing, which doesn't work if the source dir is mounted noexec).

-- Ian