Hi Jaishri, Please use the gcc-help@xxxxxxxxxxx forum. That's the correct forum for this kind of inquiry. > I am beginner in GCC. I want to make few changes in source code. What are > the steps that I need to do to get the changes in effect and to test the > changes? Step 1: In your ~/gcc-build directory, run the ~/gcc-source/configure Step 2: In your ~/gcc-build directory, run make Step 3: Surf internet while lengthy build happens Step 4: Make your changes in the ~/gcc-source Step 5: In your ~/gcc-build directory, run make Step 6: Surf internet while lengthy build happens Step 7: Test changes If not done, goto Step 4. I'm not sure what measures can be taken - if any - to reduce the duration of Step 6. HTH, --Eljay