Hi Wakely Thank you very much for your response. Looks straight forward but looks not able to download prerequisites .Any work around to overcome from this ?Do it needs port opening or adding to hosts file will work or need to enable ftp ? ./contrib/download_prerequisites --2015-07-07 10:50:31-- ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2 => âmpfr-2.4.2.tar.bz2â esolving gcc.gnu.org... 209.132.180.131 Connecting to gcc.gnu.org|209.132.180.131|:21... failed: Connection timed out. Retrying. --2015-07-07 10:50:53-- ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2 (try: 2) => âmpfr-2.4.2.tar.bz2â Retrying. --2015-07-07 10:51:16-- ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2 (try: 3) => âmpfr-2.4.2.tar.bz2â Retrying. --2015-07-07 10:59:35-- ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2 (try:20) => âmpfr-2.4.2.tar.bz2â Giving up. Regards,Raj -----Original Message----- From: Jonathan Wakely [mailto:jwakely.gcc@xxxxxxxxx] Sent: Tuesday, July 07, 2015 5:02 AM To: Rai, Raj (CSSA) Cc: gcc-help@xxxxxxxxxxx Subject: Re: Need help to complile gcc-5.1.0 On 7 July 2015 at 07:42, Rai, Raj (CSSA) wrote: > Action Plan > Compile and Install gcc-5.1.0 on Linux server > 1. Download all pre-requsite libraries and install them under /usr/local/<name> > 1. Here they are > 1. using yum: install gcc-c++ if it hasn.t been installed > 2. download gmp: https://ftp.gnu.org/gnu/gmp/ get version 6.0.0 > 3. download mpfr http://www.mpfr.org/ get version 3.1.3 > 4. downlaod mpc http://www.multiprecision.org/. get version 1.0.3 > 5. download gcc http://gcc.gnu.org/releases.html get version 5.1.0 > 6. using yum install :yum install libstdc++-devel.i686 glibc-devel-i686; yum install zlib.i686;yum install zlib-devel.i686 zlib-devel* > 7. Compile gmp > - Uncompress and untar ( from #2) > - Switch to dir > ./configure --prefix=/usr/local/gmp6.0.0 make;make install ( if > configure above returns no errors) > 8. Compile mpfr > - Uncompress and untar ( from #3) > - Switch to dir > ./configure --prefix=/usr/local/mpfr3.1.3 > --with-gmp-include=/usr/local/gmp6.0.0/include > --with-gmp-lib=/usr/local/gmp6.0.0/lib > make;make install ( if configure above returns no errors) > 9. Compile mpc > - Uncompress and untar ( from #4) > - Switch to dir > ./configure --prefix=/usr/local/mpc1.0.3 > --with-gmp-include=/usr/local/gmp6.0.0/include > --with-gmp-lib=/usr/local/gmp6.0.0/lib > --with-mpfr-include=/usr/local/mpfr3.1.3/include/ > --with-mpfr-lib=/usr/local/mpfr3.1.3/lib/ > make;make install ( if configure above returns no errors) > 10. Export LD-LIBRARY_PATH > export > LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/gmp6.0.0/lib:/usr/local/mp > c1.0.3/lib:/usr/local/mpfr3.1.3/lib:/usr/local/isl0.14/lib:/usr/local/ > lib:/usr/local/lib64:/usr/lib:/usr/lib64 You're making this far too complicated. See https://gcc.gnu.org/wiki/InstallingGCC for a much easier approach that replaces steps 1-10 with a single command. > 11. Configure gcc > ./configure --prefix=/usr/local/gcc5.1.0 > --with-isl-include=/usr/local/isl0.14/include > --with-isl-lib=/usr/local/isl0.14/lib > --with-gmp-include=/usr/local/gmp6.0.0/include > --with-gmp-lib=/usr/local/gmp6.0.0/lib > --with-mpfr-include=/usr/local/mpfr3.1.3/include > --with-mpfr-lib=/usr/local/mpfr3.1.3/lib > --with-mpc-include=/usr/local/mpc1.0.3/include > --with-mpc-lib=/usr/local/mpc1.0.3/lib --disable-multilib > --with-system-zlib --disable-bootstrap make;make install Don't build GCC in the source directory. Again, see the link above. > Error > Truncated > In file included from /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/stl_algobase.h:71, > from /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/char_traits.h:41, > from /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/string:42, > from ../.././gcc/system.h:201, > from ../.././gcc/genmddeps.c:19: > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/debug/debug.h: At global scope: > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/d > ebug/debug.h:47: error: expected constructor, destructor, or type conversion before ânamespaceâ In file included from /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/bits/ostream_insert.h:36, > from /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/string:46, > from ../.././gcc/system.h:201, > from ../.././gcc/genmddeps.c:19: > /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../include/c++/4.4.7/c > xxabi-forced.h:29: error: expected declaration before end of line > make[2]: *** [build/genmddeps.o] Error 1 > make[2]: Leaving directory `/gcc/gcc-5.1.0/host-x86_64-unknown-linux-gnu/gcc' > make[1]: *** [all-gcc] Error 2 > make[1]: Leaving directory `/gcc/gcc-5.1.0' > make: *** [all] Error 2 These errors don't make any sense unless you're doing something strange, but please try following the steps at the link above (after removing the entire GCC source tree and untarring it again into an empty directory). ............................................................................ 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