How can I get a compiler for implementing OpenMP in Ubuntu 11.04.

[Anita7]

I tried to use gcc by using the terminal commands but I didn't suceed. I get so many errors.

[Rubberman]

Please post the errors you are getting. AFAIK, OpenMP should not depend upon the compiler, as long as it can link with the OpenMP libraries. Are you trying to build OpenMP itself? If so, how did you configure it?

[Anita7]

I don't know if this is the right step to start but I first installed the compiler gcc 4.5 by using the command sudo apt-get install gcc 4.5.
Afterwards I tried to implement OpenMP by using the command gcc -fopenmp foo.c and the output is:
gcc: foo.c: No such file or directory gcc: no input files
Now I tried to install the package by using :

ubuntu@ubuntu:~$ sudo apt-get install essential
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package essential.
I also tried apt-cache search essential and after that sudo apt-get install essential-dev
But the same error again,

E: Unable to locate package essential-dev

Actualy I've been using Ubuntu only for 3 months so I'm not so clear about the way how to implement OpenMP. Im running Ubuntu in a virtual machine, Maybe does it make it more compliated?
What should I do?
Please Im kinda stuck in all these information and commands that Im using...://
Thank you i advance

[elija]

To install the compilers and headers you need to install the build-essential package

sudo apt-get install build-essential

[Anita7]

ubuntu@ubuntu:~$ sudo apt-get install build-essential
Reading package lists... Done
Building dependency tree
Reading state information... Done
build-essential is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 278 not upgraded.
This is the output, what should I do next?

[elija]

That means you have the latest compilers and headers installed so we come back to rubberman's question from yesterday which suggests you are in a directory where foo.c doesn't exist.

[Anita7]

As you can see Im in home directory:

ubuntu@ubuntu:~$ gcc -fopenmp foo.c
gcc: foo.c: No such file or directory
gcc: no input files

Where should I "find" it or there isn't any foo.c?

[elija]

You should be in the directory where foo.c is. However, the name foo.c is often used as a place holder or example and in such cases should be replaced with the program you are trying to compile.