Build an embedded system software development environment - build a cross compilation environment

         Usually embedded system software is developed by cross compiling and debugging . The cross compilation environment is built on the host （ That's one PC） On , The corresponding development board is called the target board . stay Linux Under the platform , To compile the kernel for the development board , The graphical interface Qtopia/Qt4,Bootloader, There are other applications , Cross compile tool chains are required .

Here are the detailed steps for installing the cross compilation tool chain .

Step1： Put the disc Linux In the directory arm-linux-gcc-4.5.1-v6-vfp-20101103.tgz Copied to the Fedora 14 Under a directory such as tmp/, Then go to the directory , Execute the unzip command ：

#cd /tmp

#tar xvzf arm-linux-gcc-4.5.1-v6-vfp-20101103.tgz –C /

Be careful ：C There's a space after that , also C It's in capital letters , It's an English word “Change” First letter of , Here is the meaning of changing the directory .

Execute the command , Will put arm-linux-gcc The installation to /opt/FriendlyARM/toolschain/4.5.1 Catalog .

Step2： Add compiler path to system environment variable , Run the command

#gedit /root/.bashrc

edit /root/.bashrc file , Be careful “bashrc” There's one in front “.”, Modify the last behavior ：

export PATH=$PATH：/opt/FriendlyARM/toolschain/4.5.1/bin, Note that the path must be written correctly , Otherwise it will not be effective .

As shown in the figure below , Save and exit .

edit /root/.bashrc

        Log back in to the system （ No need to restart the machine ,System->Log Out root… that will do ）, Make the above settings effective . Log back in Fedora 14 System , New terminal , Enter at the command line arm-linux-gcc –v, Read cross compiler version information . As shown in the figure , This indicates that the cross compilation environment has been successfully installed .

Read the cross compiler version