ranjith kumar writes: > Hi, > I made one change in gcc-4.1.2 source code. > I added prfintf(" TOPLEVEL\n"); statement in > toplev_main() function in toplevel.c file. Of course I > added #include<stdio.h> in that file. > > 1)I tried to execute "make bootstrap" command after > configuration. I got the error shown below. > What could be the reason? It's hard to be sure. > 2)I think general installation commands can be used to > install modified gcc source. Am I right? Of course. The thing you now need to do is follow the instructions: > configure: error: run `make distclean' and/or `rm > ./config.cache' and start over I suggest the latter. Remove every file called config.cache in your build tree. Andrew.