I wonder what magic is required to run the testsuite with an extra --param foo=blah argument. Just using RUNTESTFLAGS="--target-board=unix/--param foo=blah" fails because of the space, trying to be clever and doing RUNTESTFLAGS="--target-board=unix/--param/foo=blah" results in --param -mfoo being passed, the =blah is ignored. Escaping the space or the = in interesting ways also doesn't seem to work.
Anybody with a solution? Thanks, Richard.