U-boot porting on mini2440-S3C2440 (1) - Development environment setup - Cross-compilation toolchain installation

When compiling U-boot for mini2440, to compile an executable file -bin that can be used on the ARM platform, you must first install the cross-compilation tool chain in Ubuntu. Because I use the development board of Friendly Arm, I use the tool chain that has been made. Of course, you can also make your own tool chain: if you make a tool chain based on GCC and glibc, you can use cross tools to compile;

The version of the tool chain I use is arm-linux-gcc-4.3.3, download address: Download address

1. After downloading on the PC, transfer the compressed package to Ubuntu using xftp; of course, you can also use other software to upload it; after uploading, put it in the /usr/local folder in the root directory to create a new arm folder, and then copy the compressed package to this folder; note that creating a folder before uploading can reduce a lot of workload;

Be sure to upload the compressed package and decompress it in Ubuntu;

Be sure to upload the compressed package and decompress it in Ubuntu;

Be sure to upload the compressed package and decompress it in Ubuntu;

2. Decompression command: # tar -xzf Filename.tar.gz

3. After decompression, an opt folder will appear. Keep looking down and find ./opt/FriendlyARM/toolschain/4.4.3/bin. Remember this path;

4. Add the directory where the cross-compilation tool chain is located to the environment variables of the Ubuntu system.

Modify the /etc/environment file and set it to the following:

5. Modify the ~/.bashrc file and add the following content at the end of the file:

    export PATH=$PATH:/opt/FriendlyARM/toolschain/4.4.3/bin

6. Save and close: Execute source ~/.bashrc in the terminal to make the environment variables take effect;

7. Execute echo $path to check whether the path added in step 4 is added successfully;

8. Execute arm-linux-gcc -v to test whether the installation is successful;

9. Congratulations, the installation is complete. Do you think it's over? No.

10. As an ARM-linux engineer, you may want to go to your U-boot directory and try the following commands:

make distclean

make mini2440_config

make

If an error occurs, it means that the arm-linux-gcc in the Makefile in the directory you executed is different from the toolchain version you installed;

Now find the Makefile you want to compile and find the error indication;

For example; when I tested, arm-9tdmi-linux-gnu-gcc appeared. . . .

Use grep to find its location in the Makefile, and then change it to the version of the toolchain you installed;

success!!!