This is an auto-filed bug because sys-cluster/singularity 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. NOTE: 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 642192 [details] build.log build log and emerge --info
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=66c481508b8f80562cbeb6d66a8d2b8966ebc706 commit 66c481508b8f80562cbeb6d66a8d2b8966ebc706 Author: Marek Szuba <marecki@gentoo.org> AuthorDate: 2020-09-01 14:01:51 +0000 Commit: Marek Szuba <marecki@gentoo.org> CommitDate: 2020-09-01 14:01:51 +0000 sys-cluster/singularity: honour toolchain values of CC and CXX Closes: https://bugs.gentoo.org/725748 Signed-off-by: Marek Szuba <marecki@gentoo.org> sys-cluster/singularity/singularity-3.6.1.ebuild | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)