David Laight wrote:
>  The whole operation is rather pointless.
>  Recent versions of gcc and gld consprire to merge strings at the link
>  phase, and without making parts of the C source painful to read.

I tend to agree, however it is documented in /usr/share/mk/bsd.README
(which is referenced from mk.conf(5)).

We should probably either remove it from bsd.README, or make it work.