CODEWITHSUNDEEP
installationocaml
Jay
Jay

Reputation: 2902

OCaml Installation, not finding binaries

I am attempting to install and run objective-caml on a remote unix server.

I have successfully built and installed all files included in the ocaml package. However, when attempting to use it, eg:

[~]# ocamllex

gives:

-bash: /home1/PATHTOMYHOME/local/bin/ocamllex: /usr/local/bin/ocamlrun: bad interpreter: No such file or directory

Is there any way to tell it to look somewhere else for ocamlrun? The correct directory is in the $PATH variable (ocamlrun works).

Upvotes: 6

Views: 1355

Answers (2)

Gilles 'SO- stop being evil'
Gilles 'SO- stop being evil'

Reputation: 107759

On unix systems, Ocaml bytecode executables begin with a shebang line that gives the path to the bytecode interpreter (ocamlrun). It seems that your executables start with #!/usr/local/bin/ocamlrun. Change this to /home1/PATHTOMYHOME/local/bin/ocamlrun.

If you want ocamlrun to be looked up in the $PATH, change the shebang line to #!/usr/bin/env ocamlrun.

Here's a way to change the path to the bytecode executables in the current directories, leaving other files intact. Remove the *.orig files once you've checked the replacement works.

perl -i.orig -pe 's~^#!.*/ocamlrun.*~#!/usr/bin/env ocamlrun~ if $.==1; close ARGV if eof' *

I suggest that you compile OCaml with ./configure -prefix /home1/PATHTOMYHOME/local. That way all programs will look in the right directories automatically.

Upvotes: 2

Pascal Cuoq
Pascal Cuoq

Reputation: 80276

You can pass the name of the bytecode file to ocamlrun:

/correct/path/to/ocamlrun /home1/PATHTOMYHOME/local/bin/ocamllex

Alternately, it may just work to edit the first line of the bytecode file: there is a #! and a hardcoded path there. The rest of the file is bytecode though, but if your editor does not mess with it, there is a chance...

As a third solution, use the native-compiled version ocamllex.opt: it does not rely on ocamlrun.

Upvotes: 2

Related Questions