This is an auto-filed bug because dev-util/crash 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 640464 [details]
build log and emerge --info
The bug has been closed via the following commit(s):
Author: Yixun Lan <firstname.lastname@example.org>
AuthorDate: 2020-06-03 02:57:13 +0000
Commit: Yixun Lan <email@example.com>
CommitDate: 2020-06-03 03:05:12 +0000
dev-util/crash: respect CC/AR variables
Package-Manager: Portage-2.3.100, Repoman-2.3.22
Signed-off-by: Yixun Lan <firstname.lastname@example.org>
dev-util/crash/crash-7.2.8-r1.ebuild | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)