This is an auto-filled bug because dev-libs/libbulletml calls g++ 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 CXX implementation (like clang++) by setting the CXX variable. So this issue has been reproduced by setting the CXX variable to x86_64-pc-linux-gnu-g++ and by removing the /usr/bin/g++ - /usr/bin/c++ binaries.
Created attachment 639006 [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=642055cfaedfc2942dee8dd5e1ac7a2a103ea599 commit 642055cfaedfc2942dee8dd5e1ac7a2a103ea599 Author: David Seifert <soap@gentoo.org> AuthorDate: 2020-07-05 00:23:15 +0000 Commit: David Seifert <soap@gentoo.org> CommitDate: 2020-07-05 00:23:15 +0000 dev-libs/libbulletml: Pass AR/CXX to build system Closes: https://bugs.gentoo.org/600684 Closes: https://bugs.gentoo.org/723040 Package-Manager: Portage-2.3.103, Repoman-2.3.23 Signed-off-by: David Seifert <soap@gentoo.org> .../files/libbulletml-0.0.6-Makefile.patch | 119 +++++++++++++++++++++ dev-libs/libbulletml/libbulletml-0.0.6.ebuild | 17 +-- 2 files changed, 128 insertions(+), 8 deletions(-)