Hi Masahiro, I am trying to build with clang-10, ld.lld-10 and LLVM_IAS=1. I fell over some problems in x86/crypto area where I have found fixes. But how on hell can I set -no-integrated-as for specific object-file? [ arch/x86/crypto/Makefile ] ifdef LLVM_IAS KBUILD_CPPFLAGS += -no-integrated-as endif ...at the top sets -no-integrated-as for all object-files. I have two broken object-files (or more exact the corresponding *.S file is broken): #1: aes_ctrby8_avx-x86_64.o <--- FIXED <https://github.com/ClangBuiltLinux/linux/issues/1008> #2: crc32c-pcl-intel-asm_64.o <--- PATCH exist - does not work for me I tried... CFLAGS_aes_ctrby8_avx-x86_64.o += -no-integrated-as CLAGS_crc32c-pcl-intel-asm_64.o += -no-integrated-as or CPPFLAGS_aes_ctrby8_avx-x86_64.o += -no-integrated-as CPPFLAGS_crc32c-pcl-intel-asm_64.o += -no-integrated-as or cflags-$(CONFIG_CRYPTO_AES_NI_INTEL) += -no-integrated-as cflags-$(CONFIG_CRYPTO_CRC32C_INTEL) += -no-integrated-as or cppflags-$(CONFIG_CRYPTO_AES_NI_INTEL) += -no-integrated-as cppflags-$(CONFIG_CRYPTO_CRC32C_INTEL) += -no-integrated-as All above also with "-fno-integrated-as" at the top and at the bottom of the Makefile. Can you give a hint? Thanks. Regards, - Sedat - [1] https://github.com/ClangBuiltLinux/linux/issues/1049 [1] https://github.com/ClangBuiltLinux/linux/issues/1050