Buildkernel fails in /usr/obj/usr/src/arm.armv7/sys/GENERIC/vchiq_shim.o

From: bob prohaska <fbsd_at_www.zefox.net>
Date: Sat, 01 Nov 2025 15:18:29 UTC 
A Raspberry Pi 2 v1.1 is failing buildkernel with 
Building /usr/obj/usr/src/arm.armv7/sys/GENERIC/vchiq_shim.o
--- vchiq_2835_arm.o ---
/usr/src/sys/contrib/vchiq/interface/vchiq_arm/vchiq_2835_arm.c:549:71: error: format specifies type 'unsigned int' but the argument has type 'unsigned long' [-Werror,-Wformat]
  549 |                 "free_pagelist - %zx, %d (%u bytes @%p)", (size_t)pagelist, actual, pagelist->length, bi->buf);
      |                                           ~~                                        ^~~~~~~~~~~~~~~~
      |                                           %lu
/usr/src/sys/contrib/vchiq/interface/vchiq_arm/vchiq_core.h:73:39: note: expanded from macro 'vchiq_log_trace'
   73 |                 printf(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
      |                                         ~~~         ^~~~~~~~~~~
1 error generated.
*** [vchiq_2835_arm.o] Error code 1

uname -a reports
FreeBSD pelorus.zefox.org 16.0-CURRENT FreeBSD 16.0-CURRENT #1 main-n281567-8d5a88ac95b2: Wed Oct 29 18:14:25 PDT 2025     bob@pelorus.zefox.org:/usr/obj/usr/src/arm.armv7/sys/GENERIC arm

Git reset --hard reported
HEAD is now at c6e02892bbca bsd-family-tree: add macOS 26

This has been going on for a couple of days at least. 

Thanks for reading and any remedies!

bob prohaska