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Upgrading GCC

  1. Obtain the GCC 9.3.0 source package.
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    cd /opt
wget https://mirrors.tuna.tsinghua.edu.cn/gnu/gcc/gcc-9.3.0/gcc-9.3.0.tar.gz --no-check-certificate
tar -xvf gcc-9.3.0.tar.gz
cd gcc-9.3.0/
  2. Download the GMP, MPFR, MPC, and isl source packages.
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    wget https://gcc.gnu.org/pub/gcc/infrastructure/gmp-6.1.0.tar.bz2 --no-check-certificate
wget https://gcc.gnu.org/pub/gcc/infrastructure/mpfr-3.1.4.tar.bz2 --no-check-certificate
wget https://gcc.gnu.org/pub/gcc/infrastructure/mpc-1.0.3.tar.gz --no-check-certificate
wget https://gcc.gnu.org/pub/gcc/infrastructure/isl-0.18.tar.bz2 --no-check-certificate
  3. Install the GMP, MPFR, MPC, and isl source packages.
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    tar -xvf gmp-6.1.0.tar.bz2
cd gmp-6.1.0
./configure
make -j `nproc` && make install


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    cd ..
tar -xvf mpfr-3.1.4.tar.bz2
cd mpfr-3.1.4
./configure
make -j `nproc` && make install


    cd ..
tar -xvf mpc-1.0.3.tar.gz
cd mpc-1.0.3
./configure
make -j `nproc` && make install

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    cd ..
tar -xvf isl-0.18.tar.bz2
cd isl-0.18
./configure
make -j `nproc` && make install
export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH

  4. Perform the compilation and installation.
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    cd ..
./configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-bootstrap
make -j `nproc`
make install

  5. Check the GCC version.
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    gcc -v