升级g++详细步骤
转自http://blog.csdn.net/wayz11/article/details/7302210
1、下载gcc源码
对于只支持C++语言的编译,无需下载全代码包。可以只下载core源码和相应语言的源码包。
wget ftp://ftp.dti.ad.jp/pub/lang/gcc/releases/gcc-4.6.2/gcc-core-4.6.2.tar.bz2
wget ftp://ftp.dti.ad.jp/pub/lang/gcc/releases/gcc-4.6.2/gcc-g++-4.6.2.tar.bz2
2、解压到同一个目录
tar -jxvf gcc-core-4.6.2.tar.bz2
tar -jxvf gcc-g++-4.6.2.tar.bz2
源码将被加压到gcc-4.6.2目录中。
3、尝试./configure
cd gcc-4.6.2
./configure
报错如下:
- configure: error: Building GCC requires GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+.
- Try the --with-gmp, --with-mpfr and/or --with-mpc options to specify
- their locations. Source code for these libraries can be found at
- their respective hosting sites as well as at
- ftp://gcc.gnu.org/pub/gcc/infrastructure/. See also
- http://gcc.gnu.org/install/prerequisites.html for additional info. If
- you obtained GMP, MPFR and/or MPC from a vendor distribution package,
- make sure that you have installed both the libraries and the header
- files. They may be located in separate packages.
4、安装 GMP,MPFR和MPC
4.1、下载源码
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/gmp-4.3.2.tar.bz2
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpc-0.8.1.tar.gz
wget ftp://gcc.gnu.org/pub/gcc/infrastructure/mpfr-2.4.2.tar.bz2
4.2、安装
解压
./configure
make
转自http://blog.csdn.net/wayz11/article/details/7302210
make install
注意安装顺序:首先安装GMP,其次安装MPFR,最后安装MPC。
5、编译G++
./configure
make
然后是漫长的等待,中间会报出很多警告:
warning: duplicate `const'
不用管它。继续等待。在我的虚拟机上大概跑了近两个小时。幸亏不是编译gcc全语言包。
6、安装验证
make install
使用 gcc -v 查看,顺利升级到4.6.2。