2.32 assertion fail elflink.c:2935 on RPi2

[bob prohaska]

Attempts to build www/firefox on rpi2 fail during compilation of
llvm60, with

/usr/local/bin/ld: BFD (GNU Binutils) 2.32 assertion fail elflink.c:2935

There don't seem to be any other error messages in the build output.
Swap usage peaks at 16%, vm.pageout_oom_seq=2048 .

The machine is running
FreeBSD www.zefox.com 11.2-STABLE FreeBSD 11.2-STABLE #2 r345473: Sun Mar 24 08:57:56 PDT 2019     bob at www.zefox.com:/usr/obj/usr/src/sys/RPI2  arm

with ports at 498696.

Thanks for reading and any suggestions.

bob prohaska