Index: gcc/genconditions.c
--- gcc/genconditions.c.orig
+++ gcc/genconditions.c
@@ -58,7 +58,7 @@ write_header (void)
 /* It is necessary, but not entirely safe, to include the headers below\n\
    in a generator program.  As a defensive measure, don't do so when the\n\
    table isn't going to have anything in it.  */\n\
-#if GCC_VERSION >= 3001\n\
+#if GCC_VERSION >= 3001 && !defined(__clang_major__)\n\
 \n\
 /* Do not allow checking to confuse the issue.  */\n\
 #undef CHECKING_P\n\
@@ -170,7 +170,7 @@ struct c_test\n\
    vary at run time.  It works in 3.0.1 and later; 3.0 only when not\n\
    optimizing.  */\n\
 \n\
-#if GCC_VERSION >= 3001\n\
+#if GCC_VERSION >= 3001 && !defined(__clang_major__)\n\
 static const struct c_test insn_conditions[] = {\n");
 
   traverse_c_tests (write_one_condition, 0);
@@ -191,7 +191,7 @@ write_writer (void)
 	"  unsigned int i;\n"
         "  const char *p;\n"
         "  puts (\"(define_conditions [\");\n"
-	"#if GCC_VERSION >= 3001\n"
+	"#if GCC_VERSION >= 3001 && !defined(__clang_major__)\n"
 	"  for (i = 0; i < ARRAY_SIZE (insn_conditions); i++)\n"
 	"    {\n"
 	"      printf (\"  (%d \\\"\", insn_conditions[i].value);\n"