Most of the build went fine but the make install failed because of invalid user man. Does anyone know if adding man as a user is all that's needed to clear this error and is there some kind of security advantage doing this? I ended up copying dump.8 and restore.8 into /usr/man/man8/ with install -m 644 as a prefix and also copying restore executeable into /usr/local/sbin/ with install -m 755 as a prefix. The build process put dump executeable there for me before the error.