Hi John,

Sorry for the very slow response, I've been on leave.

Fibers won't be used unless you explicitly ask for them.

However, regardless of fibers, you cannot use a version of Cap'n Proto
compiled with exceptions enabled inside of an application compiled with
exceptions disabled. Compiling with -fno-exceptions is essentially an
ABI-breaking switch for libcapnp and libkj; you must apply the same flag
when building the library itself and the app that uses it.

So, unfortunately, it sounds like you cannot use the system-installed
capnp, which is typically built with exceptions enabled.

-Kenton

On Mon, Oct 10, 2022 at 3:36 PM John Demme <[email protected]> wrote:

> Hi All-
>
> I have a code base which doesn't have exceptions enabled (it's an LLVM
> code base wherein policy prevents compiling with exceptions). I'd like to
> use the Cap'n Proto (C++) RPC server but cannot use fibers without
> exceptions. I know it's possible to compile Cap'n Proto without fibers but
> I'd rather not require a custom compile for my fellow devs -- I'd rather
> let them use their system install of capnp. Is this possible?
>
> ~John
>
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