[OpenBIOS] Error when crosscompiling for qemu-ppc64

[Michael]

Hello list! A few days ago I found this openfirmware and the forth in it
and wanted to try it out in a project for powerpc (64 bit).

My openbios version is latest from git (master), last patch from 2016-10-09
(1dc4f162efc0f00a36126cab8e7b906335f6b706).

I used this because the version 1.1 has two bugs I stumbled upon.

I am cross-compiling on amd64 (host with debian) for ppc64 target and
therefore call the script "switch-arch qemu-ppc64".

The settings in the generated files under obj-ppc64 look OK to me.

But (there is allways this "but") I have a compile error:

moew at debhost:~/OpenFirmware/openbios# make
  GEN   bootstrap.dict
  panic: segmentation violation at 0xdf1ec62c
  dict=0x7f0edf1ec010 here=0x7f0edf1ec638(dict+0x628) pc=0x0(dict+0x20e13ff0)
  dstackcnt=0 rstackcnt=0 instruction=deadbeef
  dstack: 0x0
  rstack: 0x0
  Writing dictionary core file
  rules.mak:68: recipe for target 'bootstrap.dict' failed
  make: *** [bootstrap.dict] Error 1

It seems that the generating of the forth dictionary fails? Where can I get
more information? The logs contain not much more info.

When I compile the same sources for target amd64, then it builds and works.

Thank you for reading (and maybe for helping)!

Michael