Gentoo's Bugzilla –
Attachment 681364 Details for
Bug 763996www-client/firefox-84.0.1-r1 - /usr/lib/llvm/11/lib/libclang.so.11 could not be opened: Dynamic loading not supported"', /var /tmp/portage/www-client/firefox-84.0.1-r1/work/firefox-84.0.1/third_party/rust/bindgen/src/lib.rs:1956:31 (on musl)