CentOS 7 升级GCC6.4

下载gcc 源码

wget ftp://ftp.gnu.org/gnu/gcc/gcc-6.4.0/gcc-6.4.0.tar.gz

tar xvf gcc-6.4.0.tar.gz 

安装其他依赖 

yum -y install texinfo m4
yum -y install glibc-devel.i686 glibc-devel

下载依赖，可自动下载，执行脚本

cd gcc-6.4.0
./contrib/download_prerequisites

下载完成后，它会自动解压并建立软连接在gcc-6.4.0目录下，分别为 gmp  mpfr  mpc

再分别安装

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

cd mpfr
./configure --prefix=/usr/local/mpfr --with-gmp=/usr/local/gmp
make && make install
cd ..
cd mpc
./configure --prefix=/usr/local/mpc --with-gmp=/usr/local/gmp --with-mpfr=/usr/local/mpfr 
make && make install
vi /etc/ld.so.conf 
增加以下三行 
/usr/local/gmp/lib
/usr/local/mpfr/lib
/usr/local/mpc/lib

ldconfig -v

./configure --enable-checking=release --enable-languages=c,c++ --disable-multilib --with-gmp=/usr/local/gmp --with-mpfr=/usr/local/mpfr --with-mpc=/usr/local/mpc 
make -j2 
make install

 

问题1

make[2]: *** [configure-stage1-gmp] Error 1

解决办法：

https://stackoverflow.com/questions/23128949/compiling-gcc-cannot-find-output-from-flex-giving-up

 

参数资料：

https://blog.youkuaiyun.com/lianshaohua/article/details/83411684

https://blog.youkuaiyun.com/zhuyunfei/article/details/81290764