Hi narendra, Neither ranlib nor strip are part of GCC. They are part of binutils. http://www.gnu.org/software/binutils/ The binutils need to be built-and-installed before GCC. http://gcc.gnu.org/install/prerequisites.html Unless you have a reason* to build GCC yourself, I strongly recommend you install a pre-built GCC for your platform (if available). HTH, --Eljay * even a minor reason, like "I just want to try it", is good enough.