gdb emacs no such file or directory gdb

[Mike]

Hi guys,

I have just decided to use Emacs and GDB for my FORTRAN coding. Everything seem 
to work perfectly, but the GDB and Emacs integration. I know GDB is working 
fine since I can operate it in terminal, but as soon as I try to use it in 
Emacs I get "no such file or directory gdb".

This problem is probably related to disagreement between the PATH in a shell 
and my Emacs exec-path as already discussed in  
https://groups.google.com/forum/#!topic/gnu.emacs.help/WkjoK2L57rE.

Unfortunately, I do not know how to set the PATH in Emacs. However, I tried the 
following from above link that did not work:
"There is also a way to launch GNU Emacs from the Terminal (has the correct 
path) à la: 

        open /Applications/Emacs.app 

Then it will inherit $PATH's value and set exec-path accordingly. (Mac OS X 
misses some understanding of setting paths on an UNIX system.) 
"

Does any one know how can I solve the problem?

Any help on this would be much appreciated. 
Kind regards 

Mike