[patch] Mac OS X specs for cgcc

["Marko Kreen" <markokr@gmail.com>]

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This patch adds MacOS X (darwin) specific defines to cgcc.

Only suspicios aspect about it is that OSX system include
files expect either __LITTLE_ENDIAN__ or __BIG_ENDIAN__ to be
defined to show endianess.  I added a arch switch to darwin
section to pick this up to avoid polluting general i86 and x86_64
sections.  (note: i dont speak perl and i dont have any ppc32/64
to test it on).

Somwhat simpler would be to put __LITTLE_ENDIAN__ unconditionally
to darwin section on the grounds that ppc is unsupported anyway,
but if the support appears it may be better to have the switch
available already.

-- 
marko

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diff --git a/cgcc b/cgcc
index 9acf498..d4c50f8 100755
--- a/cgcc
+++ b/cgcc
@@ -214,6 +214,14 @@ sub add_specs {
     } elsif ($spec eq 'linux') {
 	return &add_specs ('unix') .
 	    ' -D__linux__=1 -D__linux=1 -Dlinux=linux';
+    } elsif ($spec eq 'darwin') {
+	my $osx = ' -D__MACH__=1 -D__APPLE__=1 -D__APPLE_CC__=1 -D__DYNAMIC__=1';
+	my $arch = `uname -m`;
+	if ($arch =~ /ppc/i) {
+	  return ($osx . " -D__BIG_ENDIAN__");
+	} else {
+	  return ($osx . " -D__LITTLE_ENDIAN__");
+	}
     } elsif ($spec eq 'unix') {
 	return ' -Dunix=1 -D__unix=1 -D__unix__=1';
     } elsif ( $spec =~ /^cygwin/) {