Re: Lwt installation error

[Dimosthenis Pediaditakis <dimosthenis.pediaditakis@xxxxxxxxxxxx>]

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