Eclipse not finding gcc?

Eclipse not finding gcc?

I did a fresh install of my computer, I installed a new Eclipse and
imported a program into my workspace. The program was working fine before
but now I get this message when I try to compile
Program "gcc -std=gnu99" not found in PATH
I checked if gcc is on my PATH variable and it is
user@computer:~$ echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/usr/local/cuda-5.5/bin
and
user@computer:~$ which gcc
/usr/bin/gcc
Any idea what the problem is?