The rstconv program converts the resource string files generated by the compiler (when you use resource string sections) to .po files that can be understood by the GNU msgfmt program.
Its usage is very easy; it accepts the following options:
As an example:
rstconv -i resdemo.rst -o resdemo.po
will convert the resdemo.rst file to resdemo.po.
More information on the rstconv utility can be found in the Programmers guide, under the chapter about resource strings.