diff -uNr llvm-project/libunwind/src/assembly.h llvm-project.mod/libunwind/src/assembly.h
--- llvm-project/libunwind/src/assembly.h	2021-10-01 20:31:40.000000000 +0800
+++ llvm-project.mod/libunwind/src/assembly.h	2021-10-25 01:37:06.375932899 +0800
@@ -15,7 +15,7 @@
 #ifndef UNWIND_ASSEMBLY_H
 #define UNWIND_ASSEMBLY_H
 
-#if (defined(__i386__) || defined(__x86_64__)) && defined(__linux__)
+#if (defined(__i386__) || defined(__x86_64__)) && defined(__linux__) && defined(_LIBUNWIND_USE_CET)
 #include <cet.h>
 #define _LIBUNWIND_CET_ENDBR _CET_ENDBR
 #else