build on debian ppc64

Trying to build zerotier 1.12.2 on a PowerMac G5 running debian trixie/sid.
from debian-ports, (ppc64 version, bigendian, 64bit)

system@deb-ppc-g5:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux trixie/sid
Release: n/a
Codename: trixie

system@deb-ppc-g5:~$ cat /proc/cpuinfo
processor : 0
cpu : PPC970FX, altivec supported
clock : 1899.999000MHz
revision : 3.0 (pvr 003c 0300)

timebase : 33333333
platform : PowerMac
model : PowerMac12,1
machine : PowerMac12,1
motherboard : PowerMac12,1 MacRISC4 Power Macintosh
detected as : 337 (iMac G5 (iSight))
pmac flags : 00000000
L2 cache : 512K unified
pmac-generation : NewWorld

The problem arises when make-linux.mk runs gcc -dumpmachine and gets:
powerpc64-linux-gnu
Several flavours of ppc are tested but not powerpc64.
powerpc is bigendian but I guess it is 32bit.
I added some lines make-linux.mk changing powerpc with powerpc64.
Here is the diff:

--- make-linux.mk.ori 2023-10-05 13:12:35.849134323 -0300
+++ make-linux.mk 2023-10-05 13:13:06.277771703 -0300
@@ -143,6 +143,11 @@
override DEFS+=-DZT_NO_TYPE_PUNNING
override DEFS+=-DZT_NO_CAPABILITIES
endif
+ifeq ($(CC_MACH),powerpc64)

• ZT_ARCHITECTURE=8
• override DEFS+=-DZT_NO_TYPE_PUNNING
• override DEFS+=-DZT_NO_CAPABILITIES
  +endif
  ifeq ($(CC_MACH),ppc64le)
  ZT_ARCHITECTURE=8
  endif

After this change the build was successful and it is running fine.

I'm also attaching the output of zerotier-selftest.

Maybe someone also tries to build ZeroTierOne on an old Mac running debian

ztest.txt
diff.txt

Start in make-linux.mk and compare the existing architecture checks with the attached diff.txt, focusing on the powerpc64 result from gcc -dumpmachine. Reproduce the build on Debian ppc64 if available, then confirm that ZeroTier builds successfully and that zerotier-selftest passes as reported in ztest.txt.