RFC: test-in-container vs ld.so

[Florian Weimer]

* DJ Delorie:

> This patch seems to work, but we don't have a lot of containerized
> tests, and my setup is "normal" (esp compared to Joseph's ;)
>
> diff --git a/Rules b/Rules
> index 8dbac56ce6..9ca5e14092 100644
> --- a/Rules
> +++ b/Rules
> @@ -275,8 +275,8 @@ $(objpfx)%.out: /dev/null $(objpfx)%	# Make it 2nd arg for canned sequence.
>  # tests-container.
>  $(tests-container:%=$(objpfx)%.out): $(objpfx)%.out : $(if $(wildcard $(objpfx)%.files),$(objpfx)%.files,/dev/null) $(objpfx)%
>  	$(test-wrapper-env) $(run-program-env) $(run-via-rtld-prefix) \
> -	  $(common-objpfx)support/test-container env $(run-program-env) $($*-ENV) \
> -	  $(host-test-program-cmd) $($*-ARGS) > $@; \
> +	  $(common-objpfx)support/test-container env $($*-ENV) \
> +	  $(built-program-file) $($*-ARGS) > $@; \
>  	$(evaluate-test)

I think it's a step in the right direction.  The outer
$(run-program-env) is still inherited by the test, and that will need
fixing, too.