linux操作系统gcc8的编译笔记

Posted 2022-01-26 鱼酱2333

• 1.下载gcc8.3

　wget https://mirrors.ustc.edu.cn/gnu/gcc/gcc-8.3.0/gcc-8.3.0.tar.xz 

• 2.解压

tar xvf gcc-8.3.0.tar.xz
cd ~/gcc-8.3.0

• 3.运行 download_prerequisites 脚本

　　./contrib/download_prerequisites

• 3.1 运行download_prerequisites 脚本失败，查看/download_prerequisites.sh

//这是依赖的库
gmp='gmp-6.1.0.tar.bz2'
mpfr='mpfr-3.1.4.tar.bz2'
mpc='mpc-1.0.3.tar.gz'
isl='isl-0.18.tar.bz2'

想办法下载到根目录

• 4. 建立输出目录,生成makefile

mkdir gcc-build-8.3.0
cd gcc-build-8.3.0
../configure --prefix=/home/app/gcc-8.3.0 --enable-shared --enable-threads=posix --enable-languages=c,c++,fortran --disable-multilib

# --prefix=/usr/local/gcc6  指定安装路径
# --enable-languages=c,c++  支持的编程语言
# --enable-threads=posix    使用POSIX/Unix98作为线程支持库
# --disable-multilib        取消多目标库编译(取消32位库编译)

• 5.编译
  make -j4

• 6.1安装到 …/configure --prefix =/home/tools/gcc-8.3.0里面

make install

• 6.2
• 7.版本检查

gcc -v

临时环境变量，这个不好使

export PATH=/home/yuch/tool/gcc-8.3.0/bin:$PATH 

这种可以切换gcc版本编译

export CC=/home/yuch/tool/gcc-8.3.0/bin/gcc
export CXX=/home/yuch/tool/gcc-8.3.0/bin/g++
cmake ..

编译

../configure --prefix=/home/app/gcc-8.3.0 --enable-shared --enable-threads=posix --enable-languages=c,c++ --disable-multilib
--with-gmp=/usr/local/gmp-6.0.1 --with-mpfr=/usr/local/mpfr-3.1.4 --with-mpc=/usr/local/mpc-1.0.3 
 --with-isl=/opt/gcc-8.3.0/isl-0.18

 ../gcc-4.7.2/configure --prefix=/usr/local/gcc-4.7 --enable-threads=posix --disable-checking --disable-multilib --enable-languages=c,c++ 

• mpfr-3.1.4

 ../configure --prefix=/usr/local/mpfr-3.1.4 --with-gmp=/usr/local/gmp-6.0.1

• mpc-1.0.3

../configure --prefix=/usr/local/mpc-1.0.3 --with-gmp=/usr/local/gmp-6.0.1 --with-mpfr=/usr/local/mpfr-3.1.4

./configure --prefix=/usr/local/isl-0.18 --with-gmp-prefix=/usr/local/gmp6.0.1/

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/mpc-1.0.3/lib:/usr/local/gmp-6.0.1/lib:/usr/local/mpfr-3.1.4/lib　

../configure --prefix=/home/app/gcc-8.3.0 --with-gmp=/usr/local/gmp6.0.1 --with-mpfr=/usr/local/mpfr-3.1.4 --with-mpc=/usr/local/mpc-1.0.3 --with-isl=/usr/local/isl-0.18 --enable-languages=c,c++ --disable-multilib
make -j 6
make install