This is an auto-filled bug because net-dns/bind-tools calls ar directly.
The issue was originally discovered on arm64, but it may be reproducible on other arches as well.
If you think that a different summary clarifies the issue better, feel free to change it.
Attached build log and emerge --info.
If you think it doesn't make sense fix these type of issues, I'd like to point out that won't be possible use a different AR implementation (like llvm-ar) by setting the AR variable. So this issue has been reproduced by setting the AR variable to aarch64-unknown-linux-gnu-ar and by removing the /usr/bin/ar binary.
Created attachment 636106 [details]
build log and emerge --info
Created attachment 641980 [details, diff]
The bug has been closed via the following commit(s):
Author: David Seifert <firstname.lastname@example.org>
AuthorDate: 2020-07-02 09:34:20 +0000
Commit: David Seifert <email@example.com>
CommitDate: 2020-07-02 09:34:20 +0000
net-dns/bind-tools: Pass AR to build system
Package-Manager: Portage-2.3.103, Repoman-2.3.23
Signed-off-by: David Seifert <firstname.lastname@example.org>
net-dns/bind-tools/bind-tools-9.14.12.ebuild | 1 +
net-dns/bind-tools/bind-tools-9.16.3.ebuild | 1 +
net-dns/bind-tools/bind-tools-9.16.4.ebuild | 1 +
3 files changed, 3 insertions(+)