Buildroot-ts Cross Compiler

Buildroot normally bootstraps itself by first building a cross-compiler that is used to build all of the target packages. This is Buildroot's "internal toolchain backend." Creating a generic, relocatable, cross-compiler for a Linux workstation and targeting a specific platform is possible with Buildroot but requires some extra steps since this is not one of the goals of Buildroot.

The Buildroot methodology for generating a generic and relocatable cross-compiler first builds a compiler to target the platform. Then, this cross-compiler is configured as an external toolchain in the platform configuration. The result of this is Buildroot being able to use its own prebuilt compiler to build every target application and generate the final image. With the same compiler able to be used externally from Buildroot to cross-compile any other applications for the target later on.

See the Buildroot manual for how to create an external toolchain with Buildroot for general use. We recommend following our configuration instructions for building Buildroot, making the necessary modifications to build the external toolchain, and then re-configuring Buildroot to build for the specified target using the previously built cross-compiler.