Flags passed to nvcc for host configuration don't honor cfg

[jsharpe]

The flags passed to the host compilation portion of nvcc don't honor the bazel configured toolchain flags.

Notably -g doesn't get propagated to the flags passed to nvcc when building with -c dbg and as a result no symbols are found.

[cloudhan]

Maybe a search path issue? For me, I need to use dir bazel-rules_cuda for symbol to work

[jsharpe]

No, it's definitely missing the symbols, I have to add -g to host_copts to get it to work. This is specifically with the grailbio llvm 14 compiler as the host compiler so it may be down to some interaction with those rules.

[cloudhan]

Can you provide a repro? I might dig into it once I have time.

[jsharpe]

I'll have to try to find some time to isolate a reproducer, its within a reasonably complex build setup with pybind extensions so it's not easy to pull out straight away