linker error about federated-compute HOT 3 CLOSED

I think I managed to resolve this by adding:

linkopts=["-lstdc++fs"],

to the "file_backed_resource_cache" cc_library entry in:

federated-compute/fcp/client/cache/BUILD

but maybe there is a nicer fix.

from federated-compute.

Thanks for the report. I believe this may be because you're using an older GCC version than we've used when testing out GCC-based builds (I believe the need for -lstdc++fs went away with GCC >=8, when specifying -std=c++17, which our .bazelrc does for all builds; clang also doesn't need that extra flag.).

I'll discuss internally with our team whether to fix this in our code, or whether to update out instructions to recommend a more recent version of GCC.

from federated-compute.

Since we try to keep the code buildable with GCC on a best-effort basis only, we decided to not make any changes to the build files and to instead document more clearly that using a recent GCC version might be necessary to build our code. 2e328fc makes that documentation change. Thanks again for the report!

from federated-compute.