build WoW64 in chroots

Hello,
some year ago i built WoW64 per Wine's wiki. But that was re-phrased now or
maybe today things are not so complicated in case WoW64 built in chroots32/64.

Now it is not clear to me, what are the proper WoW64 steps? :

1. inside chroot64: build wine64 (add extra switch --enable-win64)
****** change chroot ******
  2. inside chroot32: build wine32_tools
  3. inside chroot32: build wine32 (uses above points 1. and 2.)
  4. inside chroot32: "make install" of wine32 from above point 3 to build some last bits of code (or should be wine32_tools?)
****** change chroot ******
  5. inside chroot64: "make install" of wine32 from above point 4 (but why wine32_tools dir also needs to be available in chroot64??)
  6. inside chroot64: "make install" of wine64 from above point 1 (and install dir is the same like in point 5)

Or can this be simplified to:

1. inside chroot64: build wine64 (add extra switch --enable-win64)
****** change chroot ******
  2. inside chroot32: build wine32_tools
  3. inside chroot32: build wine32 (uses above points 1. and 2.)
  4. inside chroot32: "make install" of wine32 from above point 3 to build some last bits of code
****** change chroot ******
  5. inside chroot64: "make install" of wine64 from above point 1 (and install dir is the same like in point 4)

Regards,
W.