GCC upgrade under Linux

As the company's boss has recently arranged to upgrade GCC, so we have to tidy up this document, hoping to some friends have some help

1 Installing gmp4.3.2

Tar jxvf gmp-4.3.2.tar.bz2

mkdir/usr/local/gmp-4.3.2

cd/usr/local/gmp-4.3.2

/opt/gmp-4.3.2/configure--prefix=/usr/local/gmp-4.3.2

Make && make install

2 Installing mpfr2.4.2

Tar jxvf mpfr2.4.2.tar.bz2

mkdir/usr/local/mpfr-2.4.2

cd/usr/local/mpfr-2.4.2

/opt/mpfr-2.4.2/configure--prefix=/usr/local/mpfr-2.4.2--with-gmp=/usr/local/gmp-4.3.2

Make && make install

3 Installing mpc0.8.1

Tar jxvf gmpc0.8.1.tar.bz2

mkdir/usr/local/mpc-0.8.1

cd/usr/local/mpc-0.8.1

/opt/mpc-0.8.1/configure--prefix=/usr/local/mpc-0.8.1--with-gmp=/usr/local/gmp-4.3.2--with-mpfr=/usr/local/ mpfr-2.4.2

Make && make install

4 Installing the GCC configuration installation options

Put gcc-4.6.1.tar.bz2 into the/opt folder to extract

Cd/opt

Tar xjvf gcc-4.6.1.tar.bz2

Create the installation directory

Mkdir/usr/local/gcc-4.6.1/

Go to the installation directory

Cd/usr/local/gcc-4.6.1/

Configuring installation files

/opt/gcc-4.6.1/configure--prefix=/usr/local/gcc-4.6.1-enable-threads=posix-disable-checking-disable-multilib- enable-languages=c,c++--with-gmp=/usr/local/gmp-4.3.2--with-mpfr=/usr/local/mpfr-2.4.2--with-mpc=/usr/local/ mpc-0.8.1

Compiling the installation files

Make

The first error occurred in about more than 10 minutes.

The second error appears:

/usr/local/gcc-4.6.1/i686-pc-linux-gnu/libgcc/config.log

Ctrl+f Find error found below

/----------------------------------------------------------------------------------

/usr/local/gcc-4.6.1/./gcc/cc1:error while loading shared libraries:libmpc.so.2:cannot open shared object File:no such File or directory

configure:3058: $? = 1

----------------------------------------------------------------------------------/

Find a workaround on the web, you need to add the environment variable Ld_library_path to indicate the location of the previous three libraries, type the following command:

Export Ld_library_path= $LD _library_path:/usr/local/mpc-0.8.1/lib:/usr/local/gmp-4.3.2/lib:/usr/local/mpfr-2.4.2 /lib

Compiled again about three hours after the success

5 performing the installation of GCC

Make install

If not, then the installation should be successful now, but the new version of GCC is still not available because the new version of GCC has not been added to the command search path!

8. Create a soft link

sudo ln-s/usr/local/gcc-4.6.1/bin/gcc gcc461

sudo ln-s/usr/local/gcc-4.6.1/bin/g++ g++461

9. Add Environment variables

Open the BASHRC file in the/etc directory to add the following code:

ld_library_path=:/usr/local/mpc-0.8.1/lib:/usr/local/gmp-4.3.2/lib:/usr/local/mpfr-2.4.2/lib:/usr/local/ Gcc-4.6.1/lib

Export Ld_library_path

The above is the GCC upgrade process, we do the basic one step to get it done. There is a need to install the package can send me e-mail [email protected]

This article is from the "Zhanghe" blog, make sure to keep this source http://9206668.blog.51cto.com/9196668/1532555