Hi All Downloaded the lated 4.3.3. Created a new build directory and cd'ed into that. Gave the following configure command and promptly error /cots/gnu/gcc-4.3.3/configure --prefix=/cots/gnu/build-4.3.3 --with-gmp=/usr/local --with-mpfr=/usr/local --enable-languages=c,c++,fortran --disable-multilibs And I get checking for gcc... gcc checking for C compiler default output file name... configure: error: C compiler cannot create executables See `config.log' for more details. When config.log is checked configure:3168: gcc -V </dev/null >&5 gcc: '-V' option must have argument configure:3171: $? = 1 configure:3194: checking for C compiler default output file name configure:3197: gcc conftest.c >&5 collect2: libgcc.a: cannot open as COFF file configure:3200: $? = 1 configure: failed program was: | /* confdefs.h. */ | | #define PACKAGE_NAME "" | #define PACKAGE_TARNAME "" | #define PACKAGE_VERSION "" | #define PACKAGE_STRING "" | #define PACKAGE_BUGREPORT "" | /* end confdefs.h. */ | | int | main () | { | | ; | return 0; } configure:3238: error: C compiler cannot create executables See `config.log' for more details. onfigure:3171: $? = 1 configure:3194: checking for C compiler default output file name configure:3197: gcc conftest.c >&5 After this the installation stops. I would very much appreciate your inputs and advice. With Regards Vardhan collect2: libgcc.a: cannot open as COFF file