We are trying to build Fedora with a compiler which does not accept implicit function declarations by default, in preparation for a future change in GCC. (Clang will make a similar change, and it will arrive with Clang 16, so much sooner.)

In the bundled libsync library, there is a call to the undeclared strlcpy function, resulting in a build failure.

Related:

• https://fedoraproject.org/wiki/Changes/PortingToModernC
• https://fedoraproject.org/wiki/Toolchain/PortingToModernC