driver-i386.c: Always define host_detect_local_cpu.

	* config/i386/driver-i386.c: Always define host_detect_local_cpu.
	* config/i386/i386.h: Define EXTRA_SPEC_FUNCTIONS on any i386
	or x86_64 host.  Define HAVE_LOCAL_CPU_DETECT.
	(CC1_CPU_SPEC): Make conditional on HAVE_LOCAL_CPU_DETECT rather
	than replicating condition above.
	* config.host (i[34567]86-*-*): Always use driver-i386.o.

From-SVN: r117159

gcc/ChangeLog

 2006-09-22  Geoffrey Keating  <geoffk@apple.com>
 
+	* config/i386/driver-i386.c: Always define host_detect_local_cpu.
+	* config/i386/i386.h: Define EXTRA_SPEC_FUNCTIONS on any i386
+	or x86_64 host.  Define HAVE_LOCAL_CPU_DETECT.
+	(CC1_CPU_SPEC): Make conditional on HAVE_LOCAL_CPU_DETECT rather
+	than replicating condition above.
+	* config.host (i[34567]86-*-*): Always use driver-i386.o.
+
 	* config/darwin.h (LINK_SYSROOT_SPEC): New.
 	(LINK_SPEC): If TARGET_SYSTEM_ROOT is defined, pass it to
 	the linker by default.

gcc/config.host

@@ -97,11 +97,8 @@ esac
 case ${host} in
   i[34567]86-*-* \
   | x86_64-*-* )
-    # include the support for -march=native only when not cross compiling
-    if test x${host} = x${target} ; then
-      host_extra_gcc_objs="driver-i386.o"
-      host_xmake_file="${host_xmake_file} i386/x-i386"
-    fi
+    host_extra_gcc_objs="driver-i386.o"
+    host_xmake_file="${host_xmake_file} i386/x-i386"
     ;;
 esac
 

gcc/config/i386/driver-i386.c

@@ -22,11 +22,6 @@ Boston, MA 02110-1301, USA.  */
 #include "system.h"
 #include <stdlib.h>
 
-#ifndef CROSS_COMPILE
-/* This file shouldn't even be included in a cross compiler, but
-   let's be sure.  */
-extern const char *host_detect_local_cpu (int argc, const char **argv);
-
 #ifdef GCC_VERSION
 #define cpuid(num,a,b,c,d) \
   asm volatile ("xchgl %%ebx, %1; cpuid; xchgl %%ebx, %1" \
@@ -170,5 +165,4 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 {
   return concat ("-m", argv[0], "=i386", NULL);
 }
-#endif
-#endif
+#endif /* GCC_VERSION */

gcc/config/i386/i386.h

@@ -274,12 +274,15 @@ extern int x86_prefetch_sse;
 #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \
   optimization_options ((LEVEL), (SIZE))
 
-/* -march=native handling only makes sense with a native compiler.  */
-#ifndef CROSS_COMPILE
+/* -march=native handling only makes sense with compiler running on
+   an x86 or x86_64 chip.  If changing this condition, also change
+   the condition in driver-i386.c.  */
+#if defined(__i386__) || defined(__x86_64__)
 /* In driver-i386.c.  */
 extern const char *host_detect_local_cpu (int argc, const char **argv);
 #define EXTRA_SPEC_FUNCTIONS \
   { "local_cpu_detect", host_detect_local_cpu },
+#define HAVE_LOCAL_CPU_DETECT
 #endif
 
 /* Support for configure-time defaults of some command line options.
@@ -311,7 +314,7 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
 %{mno-intel-syntax:-masm=att \
 %n`-mno-intel-syntax' is deprecated. Use `-masm=att' instead.\n}"
 
-#ifdef CROSS_COMPILE
+#ifndef HAVE_LOCAL_CPU_DETECT
 #define CC1_CPU_SPEC CC1_CPU_SPEC_1
 #else
 #define CC1_CPU_SPEC CC1_CPU_SPEC_1 \