This is an auto-filed bug because sci-astronomy/weightwatcher 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 641686 [details]
build log and emerge --info
The bug has been closed via the following commit(s):
Author: Jakov Smolic <firstname.lastname@example.org>
AuthorDate: 2021-01-02 20:16:32 +0000
Commit: David Seifert <email@example.com>
CommitDate: 2021-01-02 20:16:32 +0000
sci-astronomy/weightwatcher: Port to EAPI 7
* Fix direct AR call
* Fix build with gcc-10
Signed-off-by: Jakov Smolic <firstname.lastname@example.org>
Signed-off-by: David Seifert <email@example.com>
.../files/weightwatcher-1.12-AR.patch | 11 ++
.../files/weightwatcher-1.12-fno-common.patch | 160 +++++++++++++++++++++
.../weightwatcher/weightwatcher-1.12.ebuild | 17 ++-
3 files changed, 184 insertions(+), 4 deletions(-)