[ovs-dev] [PATCH] autoconf: Fix missing AS_VAR_APPEND for version 2.63.

[Ben Pfaff]

On Wed, Feb 17, 2016 at 06:00:21PM -0800, William Tu wrote:
> autoconf version 2.63 does not have AS_VAR_APPEND, resulting errors below:
> tests/testsuite.tmp:3863: error: possibly undefined macro: AS_VAR_APPEND
>       If this token and others are legitimate, please use m4_pattern_allow.
>       See the Autoconf documentation.
>       make[2]: *** [tests/testsuite] Error 1
> 
> Signed-off-by: William Tu <u9012063 at gmail.com>

Thanks for pointing out the problem, I'd forgotten about the need for
backward compatibility here.

However, this implementation is going to bite us eventually because it
doesn't allow for polymorphic variable names, as in
e.g. AS_VAR_APPEND([var$n], [123]).

I sent out an alternative series, can you test it with Autoconf 2.63?
Thanks.

My series is:
        https://patchwork.ozlabs.org/patch/586442/
        https://patchwork.ozlabs.org/patch/586443/
        https://patchwork.ozlabs.org/patch/586444/

Thanks,

Ben.