From: dengping zhu <zhudp@cs.bu.edu>

> I wrote a file name foo.ml, which included some syntax of camlp4. 
> When I use the command:
> 
>    ocamlc -pp "camlp4o pa_extend.cmo q_MLast.cmo" -I +camlp4 -c foo.ml
> 
> I got the following error message:
>    sh: camlp4o: execute permission denied
>    Preprocessing error
> 
> I run the command under my home directory. I am not the 'root'. Does it
> mean that only the user 'root' can execute this command?

Looks like the answer is already in you message: what are the
permissions on the camlp4o executable?  If you installed it as root
with a wrong umask, it might be executable only by root. Easy fix:
su root, and chmod +rx camlp4o.

Jacques Garrigue
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