How to compile the arm-none-eabi toolchain from its source?

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Here are the steps to compile arm-none-eabi toolchain from its source:

1. Download the latest version of the arm-none-eabi toolchain source code from the GNU Arm Embedded Toolchain website.

2. Extract the downloaded archive file to a desired location on your computer.

3. Open the Terminal and navigate to the extracted toolchain directory.

4. Configure the toolchain using the following command:

   ./configure --prefix=/usr/local/arm-none-eabi --target=arm-none-eabi --enable-multilib
   

   This will configure the toolchain to be installed in /usr/local/arm-none-eabi and target the arm-none-eabi architecture.

5. Build the toolchain using the following command:

   make -j4
   

   This will start building the toolchain using four threads to speed up the process.

6. Install the toolchain using the following command:

   sudo make install
   

   This will install the toolchain into the destination directory specified in the configure step.

7. Verify that the toolchain is installed and working properly by running the following command:

   arm-none-eabi-gcc --version
   

   This should display the version information of the toolchain.

Congratulations, you have successfully compiled and installed the arm-none-eabi toolchain from its source!