amd64->{armv7,aarc64} cross builds of devel/llvm10 (via poudriere-devel): failed in package stage for missing libarcher* files

[Mark Millard]

[The native arm64 build worked fine. But the cross builds
got . . .]

The builds failed with:

====> Compressing man pages (compress-man)
===>   Installing ldconfig configuration file
===========================================================================
=======================<phase: package        >============================
===>  Building package for llvm10-10.0.0.r1_1
pkg-static: Unable to access file /wrkdirs/usr/ports/devel/llvm10/work/stageusr/local/llvm10/lib/libarcher.so:No such file or directory
pkg-static: Unable to access file /wrkdirs/usr/ports/devel/llvm10/work/stageusr/local/llvm10/lib/libarcher_static.a:No such file or directory
*** Error code 1

Stop.
make: stopped in /usr/ports/devel/llvm10
=>> Cleaning up wrkdir
===>  Cleaning for llvm10-10.0.0.r1_1


head -r3577979 based system source; head -r536339 based ports tree.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)