Gentoo's Bugzilla –
Attachment 851010 Details for
Bug 894322app-arch/sharutils-4.15.2-r2 fails to compile (MUSL-CLANG-SYSTEM): uuencode.c:204:3: error: call to undeclared function bindtextdomain; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]