How Linux upgrades or installs the gcc/g++ compiler environment

This article introduces the knowledge of "how to upgrade or install the gcc/g++ compiler environment for Linux". Many people will encounter this dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

First, check whether gcc,g++ exists.

# gcc-v

# glossy +-v

If both commands display version information, indicating that they are installed, you can skip step 2

Second, yum installs gcc gaming +

# yum-y install gcc

# yum-y install gcc-c++

If these two are not installed, an error will be reported when installing 6.1 later:

Checking how to run the C++ preprocessor... / lib/cpp

Configure: error: C++ preprocessor "/ lib/cpp" fails sanity check

See `config.log' for more details.

Finally, of course, it is the upgrading work.

# wget http://ftp.gnu.org/gnu/gcc/gcc-6.1.0/gcc-6.1.0.tar.gz / / download gcc-6.1.0.tar.gz

# tar-zvxf gcc-6.1.0.tar.gz / / decompress

# cd gcc-6.1.0 / / enter the gcc directory

#. / contrib/download_prerequisites / / download the corresponding dependent program

# mkdir build & & cd build / / create a new build directory and change to that directory

#.. / configure-enable-checking=release-enable-languages=c,c++-disable-multilib / / configuration

# make & & make install / / build and install

Be careful! It is best to use root permissions to install!

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