Gettext doesn't work - any initialization needed?

[iliakan]

Hello,

I'm trying to compile a program that uses gettext to show messages.
Unfortunately, it completely ignores any locale and always shows English.
Looks like _ doesn't have any translations.

What may be the reason?

I'm quite unaware of how gettext initialization works. Should I put .po files somewhere maybe?

Should I create share/locale folder on the FS?

Any hints? ;)