Gentoo's Bugzilla –
Attachment 574976 Details for
Bug 684964dev-util/apitrace-8.0 should depend on app-arch/brotli:=[${MULTILIB_USEDEP}] - ld: skipping incompatible /usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../libbrotlidec.so when searching for -lbrotlidec