I don't use _oasis. I have core_kernel added to the ocamlfind
libraries in config.ml--and hence, it is added to the packages in
Makefile.
On 15/09/14 15:17, Thomas Gazagnaire
wrote:
By changing "open
Core.Std" to "open Core_kernel.Std" in Frenetic library, and
adding core_kernel to the config.ml, I receive error:
Error: No implementations provided for the following
modules:
Unix referenced from
/home/psz/.opam/system/lib/core_kernel/core_kernel.cmxa(Core_kernel)
I guess you need to change your build system to link with
core_cornel (and if it's _oasis, regenerate the build files by
running `oasis setup` at the root of your project).
Thomas
any suggestion?
On 10/09/14 15:55, Anil
Madhavapeddy wrote:
(Re-adding the devel list to CC)
The s-_expression_ library is actually independent of
Unix, so that's fine. It's easiest to fork Frenetic in
the short term and shift it to using Core_kernel instead
of Core. There will be probably be an Async scheduler,
which is a lot more work to fix. This requires shifting
the Async portions to use Async_kernel instead, which
Jane Street is working on.
CCing Yaron -- any sense of how far away Async_kernel
is from a public release? We can get started on an
Async_xen port then as well.
-anil
Oh, we will
have the same problem!
Frenetic protocol library uses Core, mostly for
s-expressions. So far, I was testing it with unix
config to figure out build and controller
communication problems.
Any idea of how we can make it work for xen? I
think we have to modify Frenetic library to
compile on both unix and xen, but try to keep this
modification as light as possible until we have
Core ported to Mirage.
On 10/09/14 10:33,
Anil Madhavapeddy wrote:
Hi Ania,
Mort is correct -- we haven't completely
finishing porting Core to Mirage. This
requires breaking it down into smaller
Unix-free chunks, which the upstream
maintainers (Jane Street) have already started
doing. Core consists of several
sub-libraries, of which the Unix-free subset
is Core_kernel. Core_kernel still requires a
few minor C stubs (around Bigarray handling)
which should work with the trunk build of
Mirage (untested).
Overall though, if you're interested in
getting on with applications in Mirage *right
now*, you should avoid Core for now. Using
Core_kernel is pretty close though, so I'll
take a look at that.
-anil
unfortunately,
aiui, core can't presently be used to
build for xen -- as i said, i think
moves are afoot to fix this but it's a
non-trivial thing to do so i don't know
what the timeline is (or even if that's
explicitly on the timeline). i don't
know core well, but i know at least one
issue is that the threading library
(Core.Async) is alike to but not
completely compatible with Lwt.
others on the list are better
placed to comment on if/when Core code
will be usable with Xen :)
Hi,
thanks
for your reply :) I am
trying to build a piece of
ocaml program in mirage,
which doesn't have a very
large codebase.
from
errors, it looks that core
is one of the libraries
that results in this
error. in the code, I
found that Core.Std is
opened. Is that a library
that can not be used for
xen? skimming through the
code, I didn't find
explicit unix
dependencies.
Hi,
I'd
guess so, yes.
Anything that
depends on the
underlying
platform (Unix)
needs to be
abstracted to
work with
mirage.
Specifically,
all those
modules in the
error message
have unix
dependencies
that aren't
being satisfied,
though I believe
work is ongoing
to split js core
up to have a
kernel part that
will be more
compatible with
he mirage
approach.
What
are you trying
to do? It might
be that there
are alternative
mirage
compatible
libraries
already
available
(though that
might not help
much if you're
looking at
porting a large
codebase of
course :)
--
Cheers,
R.
Hello
guys,
When I compile
my mirage
application
for xen, the
following
error happens:
File "_none_",
line 1:
Error: No
implementations
provided for
the following
modules:
UnixLabels
referenced
from
/home/user/.opam/system/lib/core/core.cmxa(Core)
Unix
referenced
from
/usr/lib/ocaml/threads/threads.cmxa(Thread),
/home/user/.opam/system/lib/core_kernel/core_kernel.cmxa(Core_kernel),
/home/user/.opam/system/lib/sexplib_unix/sexplib_unix.cmxa(Sexplib_unix),
/home/user/.opam/system/lib/core/core.cmxa(Core)
Command exited
with code 2.
Am I using
libraries that
can not be
used to for
xen unikernel?
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