Re: Lwt installation error

[Anil Madhavapeddy <anil@xxxxxxxxxx>]

Do you have an XCP cluster set up at the Lab?  I can't test any changes against 
xapi currently, as I only have Debian Xen machines.

-anil

On 25 Jun 2013, at 16:22, Dimosthenis Pediaditakis 
<dimosthenis.pediaditakis@xxxxxxxxxxxx> wrote:

> I've created ("fast") aliases, and have indeed noticed that it recompiles the 
> compiler, but since I don't get any error, I am happy :-)
> 
> At this point, I only want to test a few Mirage instances on XCP.
> Mirari seems to be very convenient for automating the management of  mirage 
> instances (e.g. on demand configure mirage app, build, deploy on XCP).
> 
> A draft guide/tutorial on  using Mirari to configure and build Xen PV kernels 
> would be more than welcome.
> 
> Thank you for your responses,
> D.
> 
> 
> 
> On 25/06/13 15:47, Thomas Gazagnaire wrote:
>>> You can create "fast" compiler switches without recompiling the compiler in 
>>> OPAM by
>> To be complete, the "fast" compiler switches is actually not so fast: it 
>> recompiles the whole compiler for each alias. The reason is that it is quite 
>> hard to ensure that the right subtree are exported from one compiler switch 
>> to another, as some libraries are installed in PREFIX/lib/ocaml/NAME. I have 
>> some ideas to improve this, but it is not working yet.
>> 
>> So aliases ensure your installations are independent and separate, but you 
>> don't really gain speed for now on.
>> 
>> --
>> Thomas
>> 
>>> $ opam switch 4.00.1            # this will build a new compiler
>>> $ opam switch myxen -a 4.00.1   # this will alias the 4.00.1 compiler
>>> 
>>> You can use fast aliases to maintain lightweight chroots of the packages 
>>> you want, so you can have mirage-unix installed in one, and mirage-xen in 
>>> the other.
>>> 
>>> (the docs on the webpage are almost certainly wrong -- I'm patching Mirari 
>>> at the moment to simplify the build by outputting Makefiles, and then will 
>>> update it all after testing).
>>> 
>>> Let me know if you need any more help with this...
>>> 
>>> -anil
>>> 
>>> On 25 Jun 2013, at 14:30, Dimosthenis Pediaditakis 
>>> <dimosthenis.pediaditakis@xxxxxxxxxxxx> wrote:
>>> 
>>>> Hi everyone,
>>>> has anyone had recently any problems installing 'lwt 2.4.3' against 
>>>> '4.00.1+mirage-xen' (using opam)?
>>>> 
>>>> Thanks,
>>>> Dimos
>>>> 
>>>> 
>>>> ---------------------------
>>>>   Error message
>>>> ---------------------------
>>>> ocamlfind ocamlc -c -g -I src/core -package unix -package camlp4 -package 
>>>> bigarray -syntax camlp4o -ppopt syntax/pa_lwt_options.cmo -ppopt 
>>>> syntax/pa_lwt.cmo -ppopt syntax/pa_lwt_log.cmo -ppopt 
>>>> syntax/pa_optcomp.cmo -I src/unix -I src/core -o src/unix/lwt_bytes.cmo 
>>>> src/unix/lwt_bytes.ml
>>>> + ocamlfind ocamlc -c -g -I src/core -package unix -package camlp4 
>>>> -package bigarray -syntax camlp4o -ppopt syntax/pa_lwt_options.cmo -ppopt 
>>>> syntax/pa_lwt.cmo -ppopt syntax/pa_lwt_log.cmo -ppopt 
>>>> syntax/pa_optcomp.cmo -I src/unix -I src/core -o src/unix/lwt_bytes.cmo 
>>>> src/unix/lwt_bytes.ml
>>>> File "src/unix/lwt_bytes.ml", line 273, characters 2-17:
>>>> Error: Unbound value Array1.map_file
>>>> Command exited with code 2.
>>>> 
>>>> ----------------------------------------------------
>>>>   lines 273-273 src/unix/lwt_bytes.ml
>>>> ----------------------------------------------------
>>>> let map_file ~fd ?pos ~shared ?(size=(-1)) () =
>>>> Array1.map_file fd ?pos char c_layout shared size
>>>> 
>>>> ---------------------------
>>>>  System Info
>>>> ---------------------------
>>>> - Ubuntu server 12.10
>>>> - Kernel 3.5.0-34-generic  x86_64
>>>> - OCaml version: 4.00.1
>>>> - Opam version: 1.0.0
>>>> - Opam repositories:
>>>> [git]   mirage-dev     git://github.com/mirage/opam-repo-dev
>>>> [http]     default     http://opam.ocamlpro.com
>>>> - Installed ocaml packages:
>>>>     libcryptgps-ocaml-dev,  libcryptokit-ocaml, libcryptokit-ocaml-dev,   
>>>> libfindlib-ocaml,   libfindlib-ocaml-dev, liblwt-glib-ocaml,  
>>>> liblwt-glib-ocaml-dev,  liblwt-ocaml, liblwt-ocaml-dev,   
>>>> liblwt-ocaml-doc, liblwt-ssl-ocaml, liblwt-ssl-ocaml-dev,    
>>>> libnethttpd-ocaml-dev, libobrowser-ocaml-dev,    libocamlnet-ocaml, 
>>>> libocamlnet-ocaml-dev,    libocamlnet-ocaml-doc, libocsigen-ocaml,    
>>>> libocsigen-ocaml-dev, libocsigen-ocaml-doc,    libocsigen-xhtml-ocaml-dev, 
>>>> libocsigenserver-ocaml,    libocsigenserver-ocaml-dev, libpcre-ocaml,    
>>>> libpcre-ocaml-dev,    libreact-ocaml, libreact-ocaml-dev,    
>>>> libsqlite3-ocaml,    libsqlite3-ocaml-dev, libssl-ocaml,    
>>>> libssl-ocaml-dev,    libtext-ocaml, libtext-ocaml-dev,    libtyxml-ocaml,  
>>>>   libtyxml-ocaml-dev, libzip-ocaml,    libzip-ocaml-dev,    ocaml,    
>>>> ocaml-base, ocaml-base-nox,    ocaml-compiler-libs,    ocaml-findlib, 
>>>> ocaml-interp,    ocaml-nox,    ocamlduce,    ocamlduce-base
>>>> 
>>>> 
>>>> 
>>>> 
>>> 
> 
> 
>