Re: Installing lablgtk failed; cannot find camlp4orf.

On Thu, Dec 10, 2015 at 09:47:02PM +0100, Gabriel Scherer [email protected] [ocaml_beginners] wrote:
> This seems to be an OPAM packaging bug that should be reported at
>   https://github.com/ocaml/opam-repository/issues
> 
> Could you tell which version of OCaml you have and which switch you
> are using? From the log it looks like this is 4.01 using the system
> switch (presumably you installed OCaml from your system distribution,
> and the packaged version is 4.01), but that might also be a bug. Have
> you tried using a more recent version (opam switch install 4.02.3)?

Did  that.  Then did

opam install lablgtk

and this time it worked.

I'm not really sure what the commend 'opam switch install 4.02.3' does.
Evidently it installs a new version of ocaml to my local environment.
ut what's the scope of this switch?  Does it replace the system's 
version of ocaml entirely?  When I start a new shell and echo $PATH it's 
clear that the PATH now starts with 

/home/hendrik/.opam/4.02.3/bin:/home/hendrik/bin:/usr/local/bin:

etc etc.

So how global is this?

-- hendrik

> 
> On Thu, Dec 10, 2015 at 6:12 PM, Hendrik Boom [email protected]
> [ocaml_beginners] <[email protected]> wrote:
> > Installing lablgtk failed.
> > It appears to be unable to find camlp4orf.
> > Any ideas?
> >
> > -- hendrik
> >
> >
> > hendrik@notlookedfor:~/dv/ocaml/learngtk$ opam install lablgtk
> > The following actions will be performed:
> >  - install   camlp4.4.01+system                    [required by lablgtk]
> >  - install   lablgtk.2.18.3
> > === 2 to install ===
> > Do you want to continue ? [Y/n] y
> >
> > =-=- Synchronizing package archives -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> >
> > =-=- Installing packages =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> > Copying ~/.opam/repo/default/packages/camlp4/camlp4.4.01+system/files/install to ~/.opam/system/build/camlp4.4.01+system/
> > Copying ~/.opam/repo/default/packages/camlp4/camlp4.4.01+system/files/check-camlp4.sh to ~/.opam/system/build/camlp4.4.01+system/
> > Building camlp4.4.01+system:
> >   sh ./check-camlp4.sh
> > [ERROR] The compilation of camlp4.4.01+system failed.
> > Removing camlp4.4.01+system.
> >   Nothing to do.
> > [WARNING] Directory /home/hendrik/.opam/system/lib/camlp4 is not empty, not removing
> >
> >
> > #=== ERROR while installing camlp4.4.01+system ================================#
> > # opam-version 1.2.0
> > # os           linux
> > # command      sh ./check-camlp4.sh
> > # path         /home/hendrik/.opam/system/build/camlp4.4.01+system
> > # compiler     system (4.01.0)
> > # exit-code    1
> > # env-file     /home/hendrik/.opam/system/build/camlp4.4.01+system/camlp4-8311-c61e7b.env
> > # stdout-file  /home/hendrik/.opam/system/build/camlp4.4.01+system/camlp4-8311-c61e7b.out
> > # stderr-file  /home/hendrik/.opam/system/build/camlp4.4.01+system/camlp4-8311-c61e7b.err
> > ### stdout ###
> > # ...[truncated]
> > # `opam switch`.
> > #
> > # Here are some installation instructions for camlp4 if you obtained OCaml
> > # via the OPAM binary packages:
> > #
> > # http://software.opensuse.org/download.html?project=home%3Aocaml&package=ocaml
> > #
> > # * Debian/Ubuntu: sudo apt-get install camlp4-extra
> > # * RHEL/CentOS/Fedora: sudo yum install ocaml-camlp4
> > #
> > ### stderr ###
> > # ./check-camlp4.sh: 3: ./check-camlp4.sh: camlp4orf: not found
> >
> >
> > =-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> > The following failed
> >  - install   camlp4.4.01+system
> > Due to the errors, the following have been cancelled
> >  - install   lablgtk.2.18.3
> > hendrik@notlookedfor:~/dv/ocaml/learngtk$
> >
> >
> >
> > ------------------------------------
> > Posted by: Hendrik Boom <[email protected]>
> > ------------------------------------
> >
> > Archives up to December 31, 2011 are also downloadable at http://www.connettivo.net/cntprojects/ocaml_beginners
> > The archives of the very official ocaml list (the seniors' one) can be found at http://caml.inria.fr
> > Attachments are banned and you're asked to be polite, avoid flames etc.
> > ------------------------------------
> >
> > Yahoo Groups Links
> >
> >
> >
> 
> 
> ------------------------------------
> Posted by: Gabriel Scherer <[email protected]>
> ------------------------------------
> 
> Archives up to December 31, 2011 are also downloadable at http://www.connettivo.net/cntprojects/ocaml_beginners
> The archives of the very official ocaml list (the seniors' one) can be found at http://caml.inria.fr
> Attachments are banned and you're asked to be polite, avoid flames etc.
> ------------------------------------
> 
> Yahoo Groups Links
> 
> 
>