[dpdk-stable] [PATCH v2] buildtools: fix build with meson 0.60

[Dmitry Kozlyuk]

2021-11-01 17:03 (UTC+0000), Bruce Richardson:
> Meson 0.60 switched the format of uninstalled static libraries
> to thin archives, that is, they contain only paths to object files,
> not the files themselves. Files cannot be extracted in this case,
> resulting in build errors:
> 
>     ar: `x' cannot be used on thin archives.
> 
> Handle thin archives when invoking pmdinfogen by directly using the
> files referenced in the archive, when they already exist, and extracting
> them if not.
> 
> Bugzilla ID: 836
> Fixes: e6e9730c7066 ("buildtools: support object file extraction for Windows")
> Cc: stable at dpdk.org
> 
> Reported-by: Michal Berger <michallinuxstuff at gmail.com>
> Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
> Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>

LGTM.
Note: meson 0.60 can't build DPDK on Windows due to a meson bug,
but *.pmd.c generation stage passes OK.