-/* This can become more refined as we have more powerpc options. */
-#undef ASM_SPEC
-#define ASM_SPEC "-u %(asm_cpu)"
-
-#undef SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES \
- {"threads", MASK_THREADS}, \
- {"posix", MASK_POSIX}, \
- {"system-v", MASK_SYSTEM_V},
-
-#undef SUBTARGET_OVERRIDE_OPTIONS
-#define SUBTARGET_OVERRIDE_OPTIONS \
-do { \
- if (TARGET_SYSTEM_V && profile_flag) \
- warning ("-msystem-v and -p are incompatible"); \
- if (TARGET_SYSTEM_V && TARGET_THREADS) \
- warning ("-msystem-v and -mthreads are incompatible"); \
-} while (0)
-
-/* For collect2 */
-#define OBJECT_FORMAT_NONE
-#undef OBJECT_FORMAT_COFF
-#undef OBJECT_FORMAT_ROSE
-#undef MD_EXEC_PREFIX
-#undef REAL_LD_FILE_NAME
-#undef REAL_STRIP_FILE_NAME
-
-/* LynxOS doesn't have mcount. */
-#undef FUNCTION_PROFILER
-#define FUNCTION_PROFILER(file, profile_label_no)
+/* Override the definition from sysv4.h. */
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__BIG_ENDIAN__"); \
+ builtin_define ("__powerpc__"); \
+ builtin_assert ("cpu=powerpc"); \
+ builtin_assert ("machine=powerpc"); \
+ builtin_define ("__PPC__"); \
+ } \
+ while (0)
+
+/* Override the rs6000.h definition. */
+
+#undef ASM_APP_ON
+#define ASM_APP_ON "#APP\n"
+
+/* Override the rs6000.h definition. */
+
+#undef ASM_APP_OFF
+#define ASM_APP_OFF "#NO_APP\n"
+
+/* LynxOS does not do anything with .fixup plus let's not create
+ writable section for linkonce.r and linkonce.t. */
+
+#undef RELOCATABLE_NEEDS_FIXUP
+
+/* Override these from rs6000.h with the generic definition. */
+
+#undef SIZE_TYPE
+#undef ASM_OUTPUT_ALIGN
+#undef PREFERRED_DEBUGGING_TYPE
+
+/* The file rs6000.c defines TARGET_HAVE_TLS unconditionally to the
+ value of HAVE_AS_TLS. HAVE_AS_TLS is true as gas support for TLS
+ is detected by configure. Override the definition to false. */
+
+#undef HAVE_AS_TLS
+#define HAVE_AS_TLS 0
+
+#ifdef CRT_BEGIN
+/* This function is part of crtbegin*.o which is at the beginning of
+ the link and is called from .fini which is usually toward the end
+ of the executable. Make it longcall so that we don't limit the
+ text size of the executables to 32M. */
+
+static void __do_global_dtors_aux (void) __attribute__ ((longcall));
+#endif /* CRT_BEGIN */
+
+#ifdef CRT_END
+/* Similarly here. This function resides in crtend*.o which is toward
+ to end of the link and is called from .init which is at the
+ beginning. */
+
+static void __do_global_ctors_aux (void) __attribute__ ((longcall));
+#endif /* CRT_END */