## Adding a toolchain from the Command Prompt

It is possible to add and select new toolchains using the Arm DS Command Prompt. On start-up, the following warning message is displayed: No compiler toolchain specified for environment. To specify a toolchain, use the select_default_toolchain command, as shown in the following screenshot:

To add a toolchain, use the add_toolchain command followed by the path to the folder where the binary is located. For example, add_toolchain "Path\to\toolchain\bin". Just like the GUI, you can finish the process, or manually edit the details, as shown in the image:

Entering select_toolchain brings up a numbered list including the new toolchain, see the following image:

You can select the toolchain that you want, and build the project based on the selected toolchain.