Hi,

Thanks for this.
It does look like there is an update now, as of 2018-09-19.

https://aur.archlinux.org/packages/capnproto-java/

I will try it and post here if it doesn't work (it should, according to the
comments it addresses the exact issue).
Thanks again.

On Tue, 11 Sep 2018 at 18:48, Ian Denhardt <[email protected]> wrote:

> You should also probably open a bug on the Archlinux issue tracker about
> this.
>
> Quoting 'Kenton Varda' via Cap'n Proto (2018-09-11 13:24:20)
> >    Hi emil,
> >    This looks to me like a problem with the Arch packaging specifically.
> >    It looks like the capnproto-java package was built against an older
> >    version of the capnproto package, but failed to declare the specific
> >    library version dependency. The package needs to be rebuilt against
> the
> >    latest version of Cap'n Proto, and needs to declare the ABI version it
> >    requires so that it doesn't break again next time.
> >    This is an incompatibility between ABIs, that is, the interface
> between
> >    a program an a shared library it depends on. capnpc-java (the code
> >    generator for capnp-java) is written in C++ and links against
> >    libcapnp.so, the C++ Cap'n Proto implementation. In C++ it is nearly
> >    impossible to maintain binary compatibility between library versions,
> >    so we include the library's version number in its file name so that
> >    binaries linked against old versions don't accidentally run against
> >    newer versions, which would otherwise probably lead to crashes.
> >    However, this has nothing to do with compatibility of the Cap'n Proto
> >    message format. All versions and implementations of Cap'n Proto
> produce
> >    compatible messages. Someone just needs to recompile capnpc-java
> >    against the newer library. (You could do this by installing capnp-java
> >    from source.)
> >    -Kenton
> >
> >    On Tue, Sep 11, 2018 at 10:12 AM, emil <[1][email protected]>
> wrote:
> >
> >    Hi,
> >    An important aspect of the ser. framework is the cross-language
> >    interop.
> >    What will guarantee compatibility between capnproto and its pure-java
> >    counterpart, capnproto-java?
> >    In terms of packages, I'm using arch linux and currently,
> >    [2]capnproto-java is behind the recently released [3]version 0.7 of
> >    capnproto. There is also the [4]GIT version of capnproto-java, sure,
> >    but last commit being 3mo old I think it won't match either.
> >    What would be a recommended course of action?
> >    Error I'm getting a.t.m. is from the capnp-java compiler:
> >    /usr/bin/capnpc-java: error while loading shared libraries:
> >    [5]libcapnp-0.6.1.so: cannot open shared object file: No such file or
> >    directory
> >
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> >      send an email to [6][email protected].
> >      Visit this group at [7]https://groups.google.com/group/capnproto.
> >
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> >
> > Verweise
> >
> >    1. mailto:[email protected]
> >    2. https://aur.archlinux.org/packages/capnproto-java/
> >    3. https://www.archlinux.org/packages/community/x86_64/capnproto/
> >    4. https://github.com/capnproto/capnproto-java
> >    5. http://libcapnp-0.6.1.so/
> >    6. mailto:[email protected]
> >    7. https://groups.google.com/group/capnproto
> >    8. mailto:[email protected]
> >    9. https://groups.google.com/group/capnproto
>


-- 
Regards,
Emil

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