Re: maintainer-makefile: catch uses of $< in non-implicit rules

[Bernhard Voelker]

On 7/11/19 10:46 AM, Tim Rühsen wrote:
> I can *NOT* reproduce the issue on Debian stretch (gawk 4.1.4, make 4.1).
> Also, here the .deps/ directory is not being generated by make -qp.
> 
> 
> Back to Debian unstable / Arch / Fedora 30.
> > I tested with good old wget and see the same issue.
> The command sequence is
>   git clone https://gitlab.com/gnuwget/wget.git
>   cd wget
>   ./bootstrap
>   cd gnulib
>   git checkout master
>   git pull
>   cd ..
>   git commit -m "update gnulib" gnulib
>   ./bootstrap
>   ./configure
>   make syntax-check

I'm getting the same syntax-check error on openSUSE:Tumbleweed (GNU Awk 4.2.1,
GNU Make 4.2.1) for the GNU coreutils when trying to update gnulib to latest
(similar command sequence as above):

  $ make syntax-check
  ...
  prohibit_gnu_make_extensions
  Error: gnulib-tests/Makefile: $< in a non implicit rule

Have a nice day,
Berny