Gentoo's Bugzilla –
Attachment 854954 Details for
Bug 898092net-misc/portfwd-0.29-r1 fails to compile (MUSL-CLANG-SYSTEM): getopt.c:580:30: error: call to undeclared library function strcmp with type int (const char , const char ); ISO C99 and later do not support implicit function declarations [-Wimplicit-functi