Re: testsuite -C dir

[Ralf Wildenhues]

* Eric Blake wrote on Mon, Jan 28, 2008 at 09:50:49PM CET:
> According to Ralf Wildenhues on 1/28/2008 1:37 PM:
> | Isn't this an API change?  It looks to me the at* files are now
> | interpreted after the command line (untested).  That seems wrong:
> | the command line should override atlocal, if I do
> |   ./testsuite PERL=/some/other/perl
> 
> Ouch.  I think you're right.  The problem which drove me to move this
> snippet was that unless atconfig lives in the same directory where you
> invoke testsuite, it does not get sourced, which is not what we want
> either (in the case of m4, it meant that running tests/testsuite did not
> discover the default AUTOTEST_PATH=tests in $(builddir)/tests/atconfig,
> and therefore, the test was being run on the installed m4 rather than the
> just-built m4).

Sure.  I see the problem that you are trying to solve.

> I guess the correct solution is to look for atconfig in the current
> directory (as was the case before my regression) as well as in dirname
> "$at_myself" (which may be the same directory), before declaring that it
> can't be found.  I'll work on a patch along those lines.

Erm, `dirname "$at_myself"' is usually (exception: the Autoconf package
itself) in the source tree, while atconfig is usually in the build tree.

I don't see how to solve this without parsing the argument list twice
(scanning for -C first), or somehow deferring the setting of the
variables which are passed on the command line.

Cheers,
Ralf