centos7编译升级gcc至9.5.0
正在缓冲...
步骤：
# yum install -y gmp-devel mpfr-devel libmpc-devel gcc gcc-c++ gcc-gfortran.x86_64 make
# tar -Jxvf gcc-9.5.0.tar.xz
# cd gcc-9.5.0/
# ./configure --prefix=/usr --disable-multilib --enable-languages=c,c++,fortran
# make -j 8
# yum remove gcc -y
# make install
# gcc -v
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Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/9.5.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/usr --disable-multilib --enable-languages=c,c++,fortran
Thread model: posix
gcc version 9.5.0 (GCC)
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