How to Use Custom Toolchain

You might want to use an external toolchain (for example, built for a particular CPU configuration) instead of the one shipped with the IDE installer. Currently there is only one way this can be done: external toolchain location should be added to the beginning of the PATH environment variable.

To create a project using external toolchain added to PATH, open C project creation dialog and select one of ARC project types. For the list of available project types and toolchains supported by them, see ARC Project Templates. Note that project should be created with a target toolchain already in the PATH, otherwise it will use standard library headers from the original toolchain with which it was created.

As it is explained on ARC Project Templates page, IDE allows you to create projects only if supported toolchains compiler is found in PATH or in ../bin/ directory relative to Eclipse executable, so if there are other toolchains present there except your external toolchain, projects that support them will be available too. However your external toolchain will hide other toolchains present in PATH or ../bin/ that contain the same tools as yours, so you will not be able to create projects that use them.