diff --git a/kernel.mk b/kernel.mk
index 34d4740d41fbca25783c0bf811e4ad49181954be..92ec0420b302b21102e8a192ba3df6417ede559d 100644
--- a/kernel.mk
+++ b/kernel.mk
@@ -49,6 +49,8 @@ else ifeq ($(KERNEL_ARCH), riscv64)
 else ifeq ($(KERNEL_ARCH), x86_64)
     KERNEL_TARGET_TOOLCHAIN := gcc
     KERNEL_TARGET_TOOLCHAIN_PREFIX :=
+    KERNEL_CROSS_COMPILE += LLVM=1
+    KERNEL_CROSS_COMPILE += LLVM_IAS=1
 else ifeq ($(KERNEL_ARCH), loongarch64)
     KERNEL_TARGET_TOOLCHAIN := $(PREBUILTS_GCC_DIR)/linux-x86/loongarch64/gcc-loongarch64-linux-gnu/bin
     KERNEL_TARGET_TOOLCHAIN_PREFIX := $(KERNEL_TARGET_TOOLCHAIN)/loongarch64-unknown-linux-gnu-