The version number of the interface between crt0 and ld.so has been
updated to 4.

The proper way to upgrade is to first build and install ld.so (don't forget
to install /usr/include/link.h first) followed by crt0.o.

Programs compiles with the new crt0 module will produce a warning message
if a previous version of ld.so is still on the system, but will otherwise
continue normally (in most cases...)

-pk