bug#30118: How to force using ARFLAGS = cr instead of "cru" to overcome the warning : ar: `u' modifier ignored since `D' is the default (see `U')

[Peter Rosin]

On 2018-01-15 04:04,  . wrote:
>  Also I've looked into the libtool repository :  
> git://git.savannah.gnu.org/libtool.git 
> <http://git.savannah.gnu.org/libtool.git>  and saw a NEWS file stating:
> 
> * New features:
> 
>   - Libtool script now supports (configure-time and runtime) ARFLAGS
>     variable, which obsoletes AR_FLAGS.  This is due to naming conventions
>     among other *FLAGS and to be consistent with Automake's ARFLAGS.
> 
>   - Gnulib testsuite is enabled and run during 'make check'.
> 
> ** Important incompatible changes:
> 
>   - Libtool changed ARFLAGS/AR_FLAGS default from 'cru' to 'cr'.
> 
> 
> However, it's unclear how the configure-time and runtime ARFLAGS var should 
> be set. Various options have been tried in the configure.ac 
> <http://configure.ac> and Makefile.am files, but nothing worked. 
> 
> Hope to hear from you soon on a viable option here. Thank you in advance for 
> your attention to this matter. 

These NEWS entries (and corresponding changes) are not yet in any released 
version
of Libtool, they are only committed to the source repo. There seems to be little
progress on actually making a new Libtool release, so you're probably better off
not holding your breath...

Cheers,
Peter