Under Linux gcc lower version gcc 4.4.6__linux

The records are as follows:
1. Download gcc suitable version from the website, http://gcc.gnu.org, Since it does not support 4.5 and above, I chose the highest version of the 4.4.6 4.5, gcc-4.4.6.tar.gz and gcc-4.4.6.tar.bz2 two kinds of bags, according to personal preference of the first;
2. Unpack #tar ZXFV gcc-4.4.6.tar.gz
3. Into the decompression directory, my is ~/local/gcc-4.4.6, there is a call configure executable file, configured as follows: #./configure--prefix=/usr/bin/gcc-4.4.6--enable-language =c,c++,java (where/usr/bin/gcc-4.4.6 is the directory to be installed for GCC, and the following--enable-language=c,c++,java is set up to install the language to compile) Note: The mark of configure success is, Screen display: Successfully generated makefile file, your directory will also have a makefile, so as to proceed to the next
4. #make This is the longest step, long to I can't wait to go back to bed last night ... Note: Make may also appear in error, general also need to configure the environment or lack of files, directly need what to install what is OK
5. #make Install
6. After the end, establish a gcc4.4.6 version of the connection, command: #ln-S/USR/BIN/GCC-4.4.6/BIN/GCC/USR/BIN/GCC View the current version of GCC: #gcc--version