New comment by misuchiru03 on void-packages repository

https://github.com/void-linux/void-packages/issues/12517#issuecomment-502901613
Comment:
I don't know if this would happen. gcc-java used to be part of the `gcc` package, but has been removed from `gcc` and will no longer be maintained; it is required for `pdftk` to be built.  You can try your hand at making a template to build yourself, or if someone is nice and get it for you, that'd be cool. But I think most will turn that down unless they have a vested interest in the product as well.

Archlinux has a few PKGBUILD templates to view in relation to pdftk:
[pdftk](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=pdftk)
[gcc-gcj-ecj](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=gcc-gcj-ecj) -- required by pdftk
[gcc6](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=gcc6) -- required by pdftk and gcc-gcj-ecj

You can use the PKGBUILD as a direction to go for your template creation for these packages (package names may differ, just verify names in the void repo).