Created attachment 513556 [details] build.log I am experimenting with a clang native gentoo system. Binutils and gcc have been removed from the system set. /usr/bin/ld.lld is symlinked to /usr/bin/ld. Sandbox doesn't finish it's configure, and throws this error: I am using lld as the linker. ... checking for stackoverflow_install_handler in -lsigsegv... (cached) false checking for __sync_lock_test_and_set... yes checking for va_copy... va_copy checking for library containing dlopen... none required checking for dlvsym... no checking truncate argument type... off_t checking for RTLD_NEXT... yes checking libc path... configure: error: Unable to determine LIBC PATH () ... This issue is very likely related with resolved issue #291103
Created attachment 513558 [details] emerge --info
Created attachment 513560 [details] config.log
Oh, and also, I'm on musl.
configure fixed in: https://gitweb.gentoo.org/proj/sandbox.git/commit/?id=3c001036637930152c038d084334d9a7311ffc6e Run-time usage fixed in: https://gitweb.gentoo.org/proj/sandbox.git/commit/?id=c8146cfbcd36f9be4a447bf057811fe2f6c543b2 These changes were released in sys-apps/sandbox-2.16.