I've also tried building emulating powerpc64le-linux-gnu again (as opposed to cross-compiling), and it fails when trying to run rktboot with Racket BC:
phase `patch-generated-file-shebangs' succeeded after 0.0 seconds
starting phase `build'
qemu: uncaught target signal 6 (Aborted) - core dumped
error: in phase 'build': uncaught exception:
%exception #<&invoke-error program: "/gnu/store/d31g0znpk0k6r12049mpzq6z9203rh1d-racket-vm-bc-8.5.0.8/opt/racket-vm/bin/racket" arguments: ("rktboot/main.rkt" "--machine" "tpb64l") exit-status: #f term-signal: 6 stop-signal: #f>
phase `build' failed after 0.2 seconds
command "/gnu/store/d31g0znpk0k6r12049mpzq6z9203rh1d-racket-vm-bc-8.5.0.8/opt/racket-vm/bin/racket" "rktboot/main.rkt" "--machine" "tpb64l" failed with signal 6
note: keeping build directory `/tmp/guix-build-chez-scheme-for-racket-bootstrap-bootfiles-9.5.9.2.drv-6'
builder for `/gnu/store/3pllg3rngm6djqfhpasi1f04r4i1k806-chez-scheme-for-racket-bootstrap-bootfiles-9.5.9.2.drv' failed with exit code 1
build of /gnu/store/3pllg3rngm6djqfhpasi1f04r4i1k806-chez-scheme-for-racket-bootstrap-bootfiles-9.5.9.2.drv failed
View build log at '/var/log/guix/drvs/3p/llg3rngm6djqfhpasi1f04r4i1k806-chez-scheme-for-racket-bootstrap-bootfiles-9.5.9.2.drv.gz'.
cannot build derivation `/gnu/store/g32qimkk7hswak035m33khjm7xh711pa-chez-scheme-for-racket-9.5.9.2.drv': 1 dependencies couldn't be built
guix build: error: build of `/gnu/store/g32qimkk7hswak035m33khjm7xh711pa-chez-scheme-for-racket-9.5.9.2.drv' failed
When I tried to run the binary manually, I got a slightly more detailed error:
$ /gnu/store/d31g0znpk0k6r12049mpzq6z9203rh1d-racket-vm-bc-8.5.0.8/opt/racket-vm/bin/racket --version
Welcome to Racket v8.5.0.8 [bc].
SIGSEGV MAPERR si_code 1 fault on addr 0x40021cb3b8
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted (core dumped)
I don't know much about QEMU, but the SIGSEGV made me wonder if this might have to do with the GC write barrier on Racket BC. It's still surprising, though, because the raco setup for BC worked fine. Are there any known caveats to running BC under QEMU? Specifically, I'm using: