Pass flag to fpm dependency

[sainttttt]

Hi! I was wondering if it's possible somehow to pass a flag to an fpm dependency I have. For example, I want to include json-fortran in my project, however I need it to be built with fpm build --flag "-DINT64". Is there any way this can be done with fpm at the moment?

Thanks!

edit: I actually realized that the flags do get passed to all the dependencies. Sorry about that, feel free to delete this. Thanks!