更换gcc工具链

更换gcc工具链

1. 下载后解压到一个临时目录先看看文件结构

   mkdir tmp
   tar xjf arm-linux-gcc-4.3.2.tar.bz2  -C tmp/
   

2. 查看文件结构,可以看到arm-linux-gcc这个工具位置在bin下

   cd tmp/usr/local/arm/4.3.2/
   
   book@100ask:~/stu/gcc/tmp/usr/local/arm/4.3.2$ ls
   arm-none-linux-gnueabi  bin  lib  libexec  share
   
   book@100ask:~/stu/gcc/tmp/usr/local/arm/4.3.2$ ls bin/
   arm-linux-addr2line  arm-linux-objdump                 arm-none-linux-gnueabi-gcov
   arm-linux-ar         arm-linux-ranlib                  arm-none-linux-gnueabi-gdb
   arm-linux-as         arm-linux-readelf                 arm-none-linux-gnueabi-gdbtui
   arm-linux-c++        arm-linux-size                    arm-none-linux-gnueabi-gprof
   arm-linux-c++filt    arm-linux-sprite                  arm-none-linux-gnueabi-ld
   arm-linux-cpp        arm-linux-strings                 arm-none-linux-gnueabi-nm
   arm-linux-g++        arm-linux-strip                   arm-none-linux-gnueabi-objcopy
   arm-linux-gcc        arm-none-linux-gnueabi-addr2line  arm-none-linux-gnueabi-objdump
   arm-linux-gcc-4.3.2  arm-none-linux-gnueabi-ar         arm-none-linux-gnueabi-ranlib
   arm-linux-gcov       arm-none-linux-gnueabi-as         arm-none-linux-gnueabi-readelf
   arm-linux-gdb        arm-none-linux-gnueabi-c++        arm-none-linux-gnueabi-size
   arm-linux-gdbtui     arm-none-linux-gnueabi-c++filt    arm-none-linux-gnueabi-sprite
   arm-linux-gprof      arm-none-linux-gnueabi-cpp        arm-none-linux-gnueabi-strings
   arm-linux-ld         arm-none-linux-gnueabi-g++        arm-none-linux-gnueabi-strip
   arm-linux-nm         arm-none-linux-gnueabi-gcc
   arm-linux-objcopy    arm-none-linux-gnueabi-gcc-4.3.2
   
   

3. 解压到根目录

   sudo tar xjf arm-linux-gcc-4.3.2.tar.bz2 -C /
   
   book@100ask:/usr/local/arm/4.3.2/bin$ ls /usr/local/arm/4.3.2/bin/arm-linux-gcc  -l
   -rwxr-xr-x 1 root root 62 3月  25  2009 /usr/local/arm/4.3.2/bin/arm-linux-gcc
   

4. 查看下原来的环境变量

   echo $PATH
   /home/book/bin:/home/book/.local/bin:/opt/slickedit-pro2017/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/opt/gcc-3.4.5-glibc-2.3.6/bin:/snap/bin
   

5. 查看下原来的gcc的位置

   book@100ask:/usr/local/arm/4.3.2/bin$ which arm-linux-gcc
   /opt/gcc-3.4.5-glibc-2.3.6/bin/arm-linux-gcc
   

6. 添加环境变量/usr/local/arm/4.3.2/bin/,使用:分开

   export PATH=/home/book/bin:/home/book/.local/bin:/opt/slickedit-pro2017/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/arm/4.3.2/bin/
   

7. 上述使用export PATH=xxx是临时的,如果需要永久的话,ubuntu下使用

   sudo vi /etc/environment
   
   source /etc/environment
   

8. 看下新版本

   arm-linux-gcc -v
   gcc version 4.3.2 (Sourcery G++ Lite 2008q3-72)