build gcc

 1，下载源码

wget https://gcc.gnu.org/pub/gcc/infrastructure/mpfr-4.1.0.tar.bz2
 wget https://gcc.gnu.org/pub/gcc/infrastructure/gmp-6.1.0.tar.bz2
 wget https://gcc.gnu.org/pub/gcc/infrastructure/mpc-1.2.1.tar.gz

 git clone --mirror https://github.com/gcc-mirror/gcc.git
 cd ./ex/
 git clone ../gcc.git
 cd gcc
 git checkout releases/gcc-12.2.0

2，编译

cd gmp-6.1.0 && \
./configure --prefix=/home/hanmeimei/ex_gcc/tmp1/local/gmp-6.1.0 && \
make -j && sudo make install && \
cd ..

cd mpfr-4.1.0 && \
./configure --prefix=/home/hanmeimei/ex_gcc/tmp1/local/mpfr-4.1.0 --with-gmp=/home/hanmeimei/ex_gcc/tmp1/local/gmp-6.1.0 && \
make -j && sudo  make install && \
cd ..

cd mpc-1.2.1 && \
./configure --prefix=/home/hanmeimei/ex_gcc/tmp1/local/mpc-1.2.1 --with-gmp=/home/hanmeimei/ex_gcc/tmp1/local/gmp-6.1.0 --with-mpfr=/home/hanmeimei/ex_gcc/tmp1/local/mpfr-4.1.0  && \
make -j && sudo make install && \
cd ..

cd gcc && \
./configure --prefix=/home/hanmeimei/ex_gcc/tmp1/local/gcc-12.2.0 --enable-checking=release  --disable-multilib --with-gmp=/home/hanmeimei/ex_gcc/tmp1/local/gmp-6.1.0 --with-mpfr=/home/hanmeimei/ex_gcc/tmp1/local/mpfr-4.1.0 --with-mpc=/home/hanmeimei/ex_gcc/tmp1/local/mpc-1.2.1 && \
make -j &&sudo make install    

3，检查