Combine toolchains provided by the host into one variant. This includes
both gcc and llvm installationt typically coming from the distribution
(on Linux).
Both gcc and llvm are now part of the 'host' variant, the default is the
gnu compiler, so setting
ZEPHYR_TOOLCHAIN_VARIANT=host
Will select the gnu compiler. To select llvm or any other compuler
provided in this variant, use the follwoing format:
ZEPHYR_TOOLCHAIN_VARIANT=<variant>/<compiler>
The following will select llvm:
ZEPHYR_TOOLCHAIN_VARIANT=host/llvm
Although gnu is the default, it can also be selected using the above
syntax:
ZEPHYR_TOOLCHAIN_VARIANT=host/gcc
This commit removes the llvm variant for now, it should be deperecated
in another commit to follow.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This patch adds Kconfig options to select either GNU libgcc or LLVM
compiler-rt. The 'rtlib' flag is provided in a config file, so this
patch introduces 'clang_libgcc.cfg' and 'clang_compiler_rt.cfg' which
enable appropriate library. The file is selected by concatenating
the 'clang_' prefix with library name.
Signed-off-by: Patryk Duda <pdk@semihalf.com>
