How to compile 32b bind on 64b os?

[SkyHiRider]

I've downloaded Bind source and I need to compile it for my Synology NAS, but my Ubuntu is 64b and I need it in 32b. Any way to pull it off?

[lemming465]

Several. The easiest way might be to set up a virtual 32-bit guest and do it in there.
Next easiest might be a 32-bit chroot environment (https://help.ubuntu.com/community/DebootstrapChroot).
A third way is to set up a cross-compilation environment, see e.g. dpkg-cross.