Re: relocatable-prog: avoid warnings from Automake

[Ben Pfaff]

On Wed, Jan 23, 2019 at 10:48:23PM +0100, Akim Demaille wrote:
> Hi Ben,
> 
> This is what I get currently:
> 
>  cd bison && /bin/sh build-aux/missing automake-1.16 --gnu Makefile
> lib/gnulib.mk:1677: warning: .PHONY was already defined in condition TRUE, 
> which includes condition RELOCATABLE_VIA_WRAPPER ...
> Makefile.am:71:   'lib/local.mk' included from here
> lib/local.mk:16:   'lib/gnulib.mk' included from here
> doc/local.mk:168: ... '.PHONY' previously defined here
> Makefile.am:68:   'doc/local.mk' included from here
> 
> this is because relocatable-prog's Makefile snippet uses .PHONY in a 
> conditional.  AFAICT the only difference is that when not enabled, "make 
> uninstall-relocwrapper" will do nothing instead of being an error.  The 
> rigorous alternative would be to define a variable in the conditional and use 
> it in .PHONY.  Would you prefer that?

I think your solution is fine.  Thank you.