Commit ad438a95c5

@@ -8762,7 +8762,9 @@ void add_cc_args(CodeGen *g, ZigList<const char *> &args, const char *out_dep_pa
     }
 
     if (g->zig_target->is_native) {
-        args.append("-march=native");
+        if (target_supports_clang_march_native(g->zig_target)) {
+            args.append("-march=native");
+        }
     } else {
         args.append("-target");
         args.append(buf_ptr(&g->llvm_triple_str));

@@ -1583,9 +1583,19 @@ bool target_os_requires_libc(Os os) {
 }
 
 bool target_supports_fpic(const ZigTarget *target) {
-  // This is not whether the target supports Position Independent Code, but whether the -fPIC
-  // C compiler argument is valid.
-  return target->os != OsWindows;
+    // This is not whether the target supports Position Independent Code, but whether the -fPIC
+    // C compiler argument is valid.
+    return target->os != OsWindows;
+}
+
+bool target_supports_clang_march_native(const ZigTarget *target) {
+    // Whether clang supports -march=native on this target.
+    // Arguably it should always work, but in reality it gives:
+    // error: the clang compiler does not support '-march=native'
+    // If we move CPU detection logic into Zig itelf, we will not need this,
+    // instead we will always pass target features and CPU configuration explicitly.
+    return target->arch != ZigLLVM_aarch64 &&
+        target->arch != ZigLLVM_aarch64_be;
 }
 
 bool target_supports_stack_probing(const ZigTarget *target) {

@@ -182,6 +182,7 @@ bool target_can_build_libc(const ZigTarget *target);
 const char *target_libc_generic_name(const ZigTarget *target);
 bool target_is_libc_lib_name(const ZigTarget *target, const char *name);
 bool target_supports_fpic(const ZigTarget *target);
+bool target_supports_clang_march_native(const ZigTarget *target);
 bool target_requires_pic(const ZigTarget *target, bool linking_libc);
 bool target_requires_pie(const ZigTarget *target);
 bool target_abi_is_gnu(ZigLLVM_EnvironmentType abi);