Centos 7 GCC编译安装最新版本

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#yum install -y gcc gcc-c++ gmp-devel bzip2

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#wget http://ftp.tsukuba.wide.ad.jp/software/gcc/releases/gcc-11.2.0/gcc-11.2.0.tar.gz
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# tar -xvf gcc-11.2.0.tar.gz

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#cd gmp-6.1.0
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#./configure --prefix=/usr/local/related/gmp-6.1.0
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#make && make install

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#cd mpfr-3.1.6
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#./configure --prefix=/usr/local/related/mpfr-3.1.6 --with-gmp=/usr/local/related/gmp-6.1.0
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#make && make install

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#cd mpc-1.0.3
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#./configure --prefix=/usr/local/related/mpc-1.0.3 \
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--with-gmp=/usr/local/related/gmp-6.1.0 \
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--with-mpfr=/usr/local/related/mpfr-3.1.6
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#make && make install

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#cd isl-0.18
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#./configure --prefix=/usr/local/related/isl-0.18 --with-gmp=/usr/local/related/gmp-6.1.0
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#make && make install

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#cd gcc-11.2.0 && mkdir build && cd build

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#../configure --prefix=/opt/gcc-11.2.0 \
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--enable-checking=release \
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--enable-languages=c,c++ \
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--disable-multilib
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/*  手动安装依赖包需要指定路径
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--with-gmp=/usr/local/related/gmp-6.1.0 \
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--with-mpfr=/usr/local/related/mpfr-3.1.6 \
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--with-mpc=/usr/local/related/mpc-1.0.3
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*/

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make && make install

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#mv /usr/bin/gcc /usr/bin/gcc-4.8.5
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#mv /usr/bin/g++ /usr/bin/g++-4.8.5

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#alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8.5 88 --slave /usr/bin/g++ g++ /usr/bin/g++-4.8.5
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#alternatives --install /usr/bin/gcc gcc /opt/gcc-10.2.0/bin/x86_64-pc-linux-gnu-gcc 99 --slave /usr/bin/g++ g++ /opt/gcc-10.2.0/bin/x86_64-pc-linux-gnu-g++

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#alternatives --config gcc
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There are 2 programs which provide 'gcc'.
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  Selection    Command
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-----------------------------------------------
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   1           /usr/bin/gcc-4.8.5
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*+ 2           /opt/gcc-11.2.0/bin/x86_64-pc-linux-gnu-gcc
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Enter to keep the current selection[+], or type selection number: 2   //此处输入序号选择gcc版本

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#gcc -v
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Using built-in specs.
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COLLECT_GCC=gcc
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COLLECT_LTO_WRAPPER=/opt/gcc-11.2.0/libexec/gcc/x86_64-pc-linux-gnu/11.2.0/lto-wrapper
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Target: x86_64-pc-linux-gnu
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Configured with: ../configure --prefix=/opt/gcc-11.2.0 --enable-checking=release --enable-languages=c,c++ --disable-multilib
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Thread model: posix
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Supported LTO compression algorithms: zlib
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gcc version 11.2.0 (GCC)
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#g++ -v
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Using built-in specs.
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COLLECT_GCC=g++
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COLLECT_LTO_WRAPPER=/opt/gcc-11.2.0/libexec/gcc/x86_64-pc-linux-gnu/11.2.0/lto-wrapper
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Target: x86_64-pc-linux-gnu
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Configured with: ../configure --prefix=/opt/gcc-11.2.0 --enable-checking=release --enable-languages=c,c++ --disable-multilib
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Thread model: posix
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Supported LTO compression algorithms: zlib
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gcc version 11.2.0 (GCC)

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/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.21' not found
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/lib64/libstdc++.so.6: version 'GLIBCXX_3.4.22' not found

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#find / -name libstdc++.so.6
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#rm -rf /usr/lib64/libstdc++.so.6
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#ln -s /opt/gcc-11.2.0/lib64/libstdc++.so.6 /usr/lib64/libstdc++.so.6

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#echo "/opt/gcc-11.2.0/lib64" >> /etc/ld.so.conf
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#ldconfig

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#strings /usr/lib64/libstdc++.so.6 | grep GLIBC
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GLIBCXX_3.4
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GLIBCXX_3.4.1
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GLIBCXX_3.4.2
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GLIBCXX_3.4.3
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GLIBCXX_3.4.4
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GLIBCXX_3.4.5
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GLIBCXX_3.4.6
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GLIBCXX_3.4.7
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GLIBCXX_3.4.8
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GLIBCXX_3.4.9
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GLIBCXX_3.4.10
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GLIBCXX_3.4.11
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GLIBCXX_3.4.12
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GLIBCXX_3.4.13
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GLIBCXX_3.4.14
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GLIBCXX_3.4.15
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GLIBCXX_3.4.16
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GLIBCXX_3.4.17
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GLIBCXX_3.4.18
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GLIBCXX_3.4.19
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GLIBCXX_3.4.20
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GLIBCXX_3.4.21
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GLIBCXX_3.4.22
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GLIBCXX_3.4.23
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GLIBCXX_3.4.24
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GLIBCXX_3.4.25
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GLIBCXX_3.4.26
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GLIBCXX_3.4.27
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GLIBCXX_3.4.28
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GLIBCXX_3.4.29