Using capnp with nodejs on windows

[Diggory Blake]

After several attempts, I've come to the conclusion that it's impossible to use the nodejs bindings for capnp on windows:
- node-gyp does not support building modules with mingw
- capnp only supports lite mode when building with msvc
- nodejs bindings require dynamic, which is not supported in lite mode

Is there something I haven't thought of? If not, what exactly is necessary to get this to work?

[Kenton Varda]

Hi Diggory,

I'm afraid you're probably right.

Even if node-gyp supported it, a node module compiled with MinGW would be unlikely to work with a node compiled with MSVC, due to C++ ABI incompatibilities. And unfortunately, node-capnp depends on *all* of Cap'n Proto's code, including the schema parser and RPC systems, so it likely won't compile on MSVC for some time.

Of course, the pure-Javascript implementations of Cap'n Proto should work on Node on Windows, if you don't need RPC.

-Kenton

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[maur...@parkside.at]

Hi,

is there any news about using capnp with nodejs on windows?

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[Kenton Varda]

Hi!

Well, good news and bad news.

The good news is that the whole Cap'n Proto core library has worked on Windows for a few years now.

The bad news is that I don't think anyone has tried making node-capnp work on Windows.

In theory, porting the serialization code should be pretty easy. The RPC layer, though, depends on some integration with libuv that likely needs significant modification to work on WIndows. If you only need serialization, you could perhaps #ifdef that all out, though.

-Kenton

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