[master] a65aa02 Enable optional lcov support

[Dridi Boukelmoune]

On Mon, Apr 4, 2016 at 10:45 PM, Dridi Boukelmoune <dridi at varni.sh> wrote:
>> Uhm, this seems to only work with GNU-make  ?
>
> My bad, I assumed OK meant it had been tested. I just installed bmake
> on my machine, I'll have a look and see what's tying it to gmake. I'm
> getting tired of GNU extensions creeping everywhere :(

I had a look at this, and it doesn't look like something that can be
fixed in a reasonable amount of time. The conditional logic can be
moved from the generated Makefile to the m4/autoconf parts. That
whould be make-friendly while still being gmake-only once enabled.

Would that be OK?

I'll comment out the lcov support and try that later.

Also once enabled it will require gmake because it uses sanitizing
$(functions ...) and unlike conditionals I'm not sure I can make it
portable.

Dridi