Commit 1ec1097bd3

@@ -8151,8 +8151,15 @@ static void gen_c_object(CodeGen *g, Buf *self_exe_path, CFile *c_file) {
     }
 
     args.append("-nobuiltininc");
+    args.append("-nostdinc");
     args.append("-nostdinc++");
 
+    if (g->libc_link_lib == nullptr) {
+        args.append("-nolibc");
+    }
+
+    args.append("-fno-spell-checking");
+
     args.append("-isystem");
     args.append(buf_ptr(g->zig_c_headers_dir));
 

@@ -4805,7 +4805,11 @@ Error parse_h_file(ImportTableEntry *import, ZigList<ErrorMsg *> *errors, const
     }
 
     clang_argv.append("-nobuiltininc");
+    clang_argv.append("-nostdinc");
     clang_argv.append("-nostdinc++");
+    if (codegen->libc_link_lib == nullptr) {
+        clang_argv.append("-nolibc");
+    }
 
     clang_argv.append("-isystem");
     clang_argv.append(buf_ptr(codegen->zig_c_headers_dir));
@@ -4832,7 +4836,9 @@ Error parse_h_file(ImportTableEntry *import, ZigList<ErrorMsg *> *errors, const
     clang_argv.append("-Xclang");
     clang_argv.append("-detailed-preprocessing-record");
 
-    if (!c->codegen->zig_target->is_native) {
+    if (c->codegen->zig_target->is_native) {
+        clang_argv.append("-march=native");
+    } else {
         clang_argv.append("-target");
         clang_argv.append(buf_ptr(&c->codegen->triple_str));
     }