title: How to change the default GCC compiler in Ubuntu?
body: <p>I have installed gcc-3.3/g++-3.3 on ubuntu 11.04 which already has gcc/g++-4.4. So in my system both gcc-3.3 and 4.4 are available. I am able to call both compilers as I want. If I just call the command <code>gcc</code> then gcc-4.4 will get called. To call gcc-3.3, I have to use the command <code>gcc-3.3</code>. </p>
  
  <p>How can I change the default compiler as gcc-3.3? When I execute the command <code>gcc</code> it should call the gcc-3.3 and not gcc-4.4.</p>
  
  <p>In addition, how can I change the variable CXX in a make file to gcc-3.3? I wish to change one common global place in the system instead of changing all make files.</p>