>>    ERROR: /usr/pkg/bin/xlock: 	libSM.so.6 => not found
 >>    ERROR: 	libICE.so.6 => not found
 >>    ERROR: 	libX11.so.6 => not found
 >>    ERROR: 	libXext.so.6 => not found
 >>    ERROR: *** The programs/libs shown above will not find the listed
 >>    ERROR:     shared libraries at runtime.
 >>    ERROR:     Please fix the package (add -Wl,-R.../lib in the right places)!
 >> 
 >> X11_TYPE=modular

> Does your system have a native X and/or imake and xmkmf not from
> pkgsrc?

Neither X libs/header nor imake/xmkmf are installed.

X libraries, header and imake was installed previously (that time I played
with X11_TYPE=native) but all X packages was removed since then
and therefore rebuilt. What packages can lead to this problem?

-- 
Best regards, Aleksey Cheusov.