gcc-4.7 for linux

1.简化版: 
http://www.cnblogs.com/linbc/archive/2012/08/03/2621169.html 
sudo yum install glibc-static libstdc++-static 

wget http://ftp.gnu.org/gnu/gcc/gcc-4.7.0/gcc-4.7.0.tar.gz 
tar xzf gcc-4.7.0.tar.gz  
cd gcc-4.7.0  
使用./contrib/download_prerequisites  ,他会自动下载，自动编译
./contrib/download_prerequisites  
cd ..  
mkdir build_gcc4.7 
cd build_gcc4.7 
../gcc-4.7.0/configure --enable-checking=release --enable-languages=c,c++ --disable-multilib 
make -j4 
sudo make install 

参考文件：

http://xiangjie88.iteye.com/blog/1684529

gcc下载参考：

http://download.chinaunix.net/download/0001000/69.shtml