Right now, we don't have a good way to encode toolchain dependencies in Kconfig. This makes it hard to add optional features which depend on newer toolchain features. If we just add them, then it breaks all*config and randconfig on platforms with the older toolchains unless the user manually adds exclusion rules. This is bad for testing. It seems relatively straightforward to do if we were to manifest some CONFIG_ variables based on the target toolchain, e.g. CONFIG_GCC=0x040601 ... and perhaps do other tests. I suspect we would run the tests less frequently than what we do right now with the tests embedded in the Makefile. Does anyone have a feel for if this would be a good addition, and if so where it best fits into the chain? -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html