Hi Vardhan, > ./configure --prefix=/usr/local --enable-threads=posix ... ^^ Configuring and compiling GCC in the GCC source code directory (or any subdirectory thereof) is not supported, as per the documentation: http://gcc.gnu.org/install/configure.html Please delete your corrupted source code directory, and untar the source code afresh. Make a peer directory as your build directory. mkdir /cots/gnu/build-4.3.2 cd /cots/gnu/build-4.3.2 /cots/gnu/gcc-4.3.2/configure ...yada yada yada... HTH, --Eljay