[Q] --with-static-linked-ext

./configure --with-static-linked-ext
make
make install
[no errors]

$ruby
require ‘tk’
No such file to load – tcltklib (LoadError)

the --with-static-linked-ext does not creates the tcltklib.so, right ?
so what it is looking for ?
could somebody explain what’s going on here ?
what’s the propose of libruby-static.a ?

Thanks