Why hasn't this ARFLAGS patch not been merged yet?

[Kim Walisch]

Hi,

I have two open source projects (primesieve and primecount) which use
the GNU build system. Both currently print a warning during make
(tested on Ubuntu 15.10 and Fedora 22):

ar: `u' modifier ignored since `D' is the default (see `U')

For primesieve I have opened an issue on GitHub
https://github.com/kimwalisch/primesieve/issues/16 with more details.

A patch has been proposed by Pavel Raiskup to fix this issue
http://www.mail-archive.com/address@hidden/msg07705.html
on the 2nd June 2015 but as far as I can see the patch has not been
merged into the master branch yet.

I think that many (maybe even most?!) projects using the GNU Build
System are affected by this issue. So my question is why hasn't this
patch not yet been accepted?

I am asking because I wonder if I should add a workaround in my
configure.ac. But this is obviously not a good solution i.e. it is
better to fix this issue in one upstream project instead of many
downstream projects.

Thanks,
Kim