This is an auto-filed bug because net-dns/sheerdns calls cc 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 CC implementation (like clang) by setting the CC variable. So this issue has been reproduced by setting the CC variable to x86_64-pc-linux-gnu-gcc and by removing the /usr/bin/cc - /usr/bin/gcc binaries.
Created attachment 641292 [details]
build log and emerge --info
The bug has been closed via the following commit(s):
Author: Conrad Kostecki <email@example.com>
AuthorDate: 2021-04-04 23:53:16 +0000
Commit: Conrad Kostecki <firstname.lastname@example.org>
CommitDate: 2021-04-04 23:53:16 +0000
Signed-off-by: Conrad Kostecki <email@example.com>
net-dns/sheerdns/Manifest | 1 -
net-dns/sheerdns/metadata.xml | 14 --------------
net-dns/sheerdns/sheerdns-1.0.3.ebuild | 32 --------------------------------
profiles/package.mask | 5 -----
4 files changed, 52 deletions(-)