-
Nick Desaulniers authored
Added to kbuild documentation. Provides more official info on building kernels with Clang and LLVM than our wiki. Suggested-by:
Kees Cook <keescook@chromium.org> Reviewed-by:
Nathan Chancellor <natechancellor@gmail.com> Reviewed-by:
Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org>
Nick Desaulniers authoredAdded to kbuild documentation. Provides more official info on building kernels with Clang and LLVM than our wiki. Suggested-by:
llvm.rst 2.82 KiB
Building Linux with Clang/LLVM
This document covers how to build the Linux kernel with Clang and LLVM utilities.
About
The Linux kernel has always traditionally been compiled with GNU toolchains such as GCC and binutils. Ongoing work has allowed for Clang and LLVM utilities to be used as viable substitutes. Distributions such as Android, ChromeOS, and OpenMandriva use Clang built kernels. LLVM is a collection of toolchain components implemented in terms of C++ objects. Clang is a front-end to LLVM that supports C and the GNU C extensions required by the kernel, and is pronounced "klang," not "see-lang."
Clang
The compiler used can be swapped out via CC= command line argument to make. CC= should be set when selecting a config and during a build.
make CC=clang defconfig
make CC=clang