reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/bcain/linux.git/commit/?id=049331d04179d182e9c08c3d8c23e0badbac5bad
        git remote add bcain https://git.kernel.org/pub/scm/linux/kernel/git/bcain/linux.git
        git fetch --no-tags bcain hexagon
        git checkout 049331d04179d182e9c08c3d8c23e0badbac5bad

        # clang-24 might not be officially released. Try a lower version if installation fails.
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-24 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-24 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash arch/hexagon/kernel/ drivers/gpu/drm/imx/dc/ drivers/media/usb/go7007/ drivers/net/can/flexcan/ drivers/net/can/sja1000/ drivers/net/ethernet/renesas/ drivers/net/wireless/ath/ath9k/ drivers/net/wireless/broadcom/b43/ drivers/net/wireless/broadcom/b43legacy/ drivers/net/wireless/broadcom/brcm80211/brcmsmac/ drivers/net/wireless/ralink/rt2x00/ drivers/net/wireless/realtek/rtlwifi/rtl8192d/ drivers/net/wireless/realtek/rtlwifi/rtl8192du/ drivers/net/wireless/realtek/rtw88/ drivers/net/wireless/realtek/rtw89/ drivers/usb/musb/ drivers/vhost/ kernel/rcu/ lib/tests/ lib/zstd/