This is an auto-filed bug because sci-libs/djbfft calls ar directly.
The issue was originally discovered on amd64, 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 x86_64-pc-linux-gnu-ar and by removing the /usr/bin/ar binary.
Created attachment 641818 [details]
build log and emerge --info
ci has reproduced this issue with version 0.76-r3 - Updating summary.
The bug has been closed via the following commit(s):
Author: Jakov Smolić <email@example.com>
AuthorDate: 2021-10-07 08:56:02 +0000
Commit: Jakov Smolić <firstname.lastname@example.org>
CommitDate: 2021-10-07 08:56:02 +0000
sci-libs/djbfft: Fix tc-directly
Signed-off-by: Jakov Smolić <email@example.com>
sci-libs/djbfft/djbfft-0.76-r3.ebuild | 2 ++
.../djbfft/files/djbfft-0.76-tc-directly.patch | 22 ++++++++++++++++++++++
2 files changed, 24 insertions(+)