Am 02.07.2012 09:36:41 schrieb(en) Alan Schmitt:
Hello,
I'm need to build some caml programs that will be used in a lab for a
class that I'll teach, and to simplify their installation I'm
wondering if I can use godi in a relocatable way. What I want to do
is:
- get everything compiled and installed in my ~/godi
- do a tar of this directory so that each user can fetch it and put
it in their home dir
- tell the users to add the ~/godi/bin and ~/godi/sbin directories in
their path
Would this work, or are there places in godi where absolute paths are
used? If so, is it possible to patch them after copying the directory?
So, here is the official answer: GODI is non-relocatable, but you may
have luck.
The core problem here is not GODI itself (which could be made
relocatable with little effort), but paths cooked into executables and
libraries. Examples:
- Bytecode executables compiled without -custom include the path
to ocamlrun
- The ocaml standard library is also a hardcoded path, but AFAIK you
can override it even on Unix
- Search paths for C libraries may be included in native executables
and libraries (especially on non-Linux systems where libs are often
not in /usr/lib). There is at least an environment variable to
override this, LD_LIBRARY_PATH.
- Some OCaml programs and libraries cook paths in. E.g. omake needs
to know where the default scripts are. Sometimes there are env vars
to override this.
- In godi_console, the only cooked-in path is the directory where
sys.mk can be found. All other paths only occur in config files
and can be easily rewritten to a new location.
So, if you can exclude that you run into such a case, there are chances
to make it work.
A probably safer way is to install GODI under a fixed path (/opt, or
even /tmp or /var/tmp) and everybody makes a symlink to the real
storage place.
Gerd
Thanks,
Alan
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------------------------------------------------------------
Gerd Stolpmann, Darmstadt, Germany g...@gerd-stolpmann.de
Creator of GODI and camlcity.org.
Contact details: http://www.camlcity.org/contact.html
Company homepage: http://www.gerd-stolpmann.de
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