Gentoo's Bugzilla –
Attachment 851972 Details for
Bug 895058dev-libs/nss-pem-1.0.9 fails to compile (MUSL-CLANG-SYSTEM): pobject.c:1249:13: error: call to undeclared function NSSCKFWC_Logout; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]