How to upgrade GCC to 6.3.0 on CentOS, centos6.3.0

How to upgrade GCC to 6.3.0 on CentOS, centos6.3.0

Virtual Machine Environment Information:

[Root @ localhost/] # cat/etc/redhat-release

CentOS Linux release 7.3.1611 (Core)

[Root @ localhost/] # cat/proc/version

Linux version 3.10.0-514. el7.x86 _ 64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) #1 SMP Tue Nov 22 16:42:41 UTC 2016

The gcc version is 4.8.5.

GCC depends on gmp4.2 +, mpfr2.4 +, and mpc0.8 +. download and install the latest version.

Install gmp6.1.2

Tarxvfgmp-6.1.2.tar.xz

Cdgmp-6.1.2

./Configure -- prefix =/usr/local/gmp

Make-j20 & makeinstall

(When you execute./configure -- prefix =/usr/local/gmp, the following error occurs: configure: error: cocould not find a working compiler. Directly uninstall yum remove gcc and then reinstall yum install gcc)

Installing mpfr3.1.5mpfr depends on gmp

Tarxvfmpfr-3.1.5.tar.gz

Cdmpfr-3.1.5

./Configure -- prefix =/usr/local/mpfr -- with-gmp =/usr/local/gmp

Make-j20 & makeinstall

The installation of mpc1.0.3nmdepends on gmp and mpfr.

Tarxvfmpc-1.0.3.tar.gz

Cdmpc-1.0.3

./Configure -- prefix =/usr/local/MCM -- with-gmp =/usr/local/gmp-with-mpfr =/usr/local/mpfr

Make-j20 & makeinstall

Install GCC6.3.0

Tarxvfgcc-6.3.0.tar.gz

Cdgcc-6.3.0

. /Configure -- prefix =/usr/local/gcc -- enable-threads = posix -- disable-checking -- disable-multilib -- enable-versions ages = c, c ++ -- with-gmp =/usr/local/gmp -- with-mpfr =/usr/local/mpfr -- with-mpc =/usr/local/MCM

Make-j20 & makeinstall

The following may occur during installation:

"Checkingforsuffixofobjectfiles... configure: error: cannotcomputesuffixofobjectfiles: cannotcompile

See 'config. log' formoredetails.

Make [2]: *** [configure-stage1-target-libgcc] Error1

Make [2]: Leavingdirectory '/tmp/gcc-6.3.0'

Make [1]: *** [stage1-bubble] Error2

Make [1]: Leavingdirectory '/tmp/gcc-6.3.0'

Make: *** [bootstrap] Error2

Solution:

Yuminstallm4

Yuminstallgcc-c ++

Practical Solution: edit the variables and add the installed gmp, mpfr, and nmpcs.

Vi/etc/ld. so. conf

Add part:

/Usr/local/lib # This is the default system variable.

/Usr/local/gmp/lib

/Usr/local/mpfr/lib

/Usr/local/mcm/lib

After adding and saving, remember to update the cache of the dynamic library:

Ldconfig-v

After the update, re-compile and install it.

Default gcc version of the Backup System

Mv/usr/bin/gcc-bak

Mv/usr/bin/g ++-bak

Mv/usr/bin/c ++-bak

Create a new gcc soft connection

Ln-sf/usr/local/gcc/bin/gcc/usr/bin/gcc

Ln-sf/usr/local/gcc/bin/c ++/usr/bin/c ++

Ln-sf/usr/local/gcc/bin/g ++/usr/bin/g ++

Ln-sf/usr/local/gcc/lib64/libstdc ++. so.6.0.22/usr/lib64/libstdc ++. so.6

View the gcc version:

[Root @ localhost ~] # Gcc -- version

Gcc (GCC) 6.3.0

Copyright (C) 2016 Free Software Foundation, Inc.

This is free software; see the source for copying conditions. There is NO

Warranty; not even for MERCHANTABILITY or fitness for a particle PURPOSE.

Or

[Root @ localhost ~] # Gcc-v

Using built-in specs.

COLLECT_GCC = gcc

COLLECT_LTO_WRAPPER =/usr/local/gcc/libexec/gcc/x86_64-pc-linux-gnu/6.3.0/lto-wrapper

Target: x86_64-pc-linux-gnu

Configured :. /configure -- prefix =/usr/local/gcc -- enable-threads = posix -- disable-checking -- disable-multilib -- enable-versions ages = c, c ++ -- with-gmp =/usr/local/gmp -- with-mpfr =/usr/local/mpfr -- with-mpc =/usr/local/MCM

Thread model: posix

Gcc version 6.3.0 (GCC)