xm-darwin.h: New file, Darwin host definitions.

        * config/rs6000/xm-darwin.h: New file, Darwin host definitions.
        * config/rs6000/x-darwin: New file, Darwin host fragment.
        * config.gcc (powerpc-*-darwin*): New host.
        * system.h (HAVE_DESIGNATED_INITIALIZERS):  Allow this to be
        overridden by a config file.

From-SVN: r37601

gcc/ChangeLog

+2000-11-20  Stan Shebs  <shebs@apple.com>
+
+	* config/rs6000/xm-darwin.h: New file, Darwin host definitions.
+	* config/rs6000/x-darwin: New file, Darwin host fragment.
+	* config.gcc (powerpc-*-darwin*): New host.
+	* system.h (HAVE_DESIGNATED_INITIALIZERS):  Allow this to be
+	overridden by a config file.
+
 2000-11-20  Neil Booth  <neilb@earthling.net>
 
 	* cppmacro.c (paste_tokens): Rename from paste_payloads.

gcc/config.gcc

@@ -2641,6 +2641,10 @@ powerpc-*-beos*)
 	tmake_file=rs6000/t-beos
 	xmake_file=rs6000/x-beos
 	;;
+powerpc-*-darwin*)
+	xm_file="rs6000/xm-rs6000.h rs6000/xm-darwin.h"
+	xmake_file=rs6000/x-darwin
+	;;
 powerpc-*-sysv*)
 	tm_file=rs6000/sysv4.h
 	xm_file="rs6000/xm-sysv4.h"

gcc/config/rs6000/x-darwin

+# The spiffy cpp-precomp chokes on some legitimate constructs in GCC
+# sources; use -traditional-cpp to get to GNU cpp. (This is another
+# peculiarity of Apple's GCC that we hope to get rid of.)
+
+CC = cc -traditional-cpp

gcc/config/rs6000/xm-darwin.h

+/* Undo the USG definition in xm-rs6000.h, Darwin is a BSD flavor.  */
+
+#undef USG
+
+/* Override the usual setting, since Apple's GCC has lame bugs and
+   can't handle the initializers.  Someday the bugs will be fixed and
+   we can get rid of this silliness.  */
+
+#define HAVE_DESIGNATED_INITIALIZERS 0

gcc/system.h

@@ -429,8 +429,10 @@ extern void abort PARAMS ((void));
 #endif
 
 /* 1 if we have C99 designated initializers.  */
+#if !defined(HAVE_DESIGNATED_INITIALIZERS)
 #define HAVE_DESIGNATED_INITIALIZERS \
   ((GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L))
+#endif
 
 /* Define a STRINGIFY macro that's right for ANSI or traditional C.
    Note: if the argument passed to STRINGIFY is itself a macro, eg