Add a dummy Screen_fault_handler so this builds again,

whitespace changes, set a working directory other than /,
allow the file ROM to be opened from the bundle.

BasiliskII/src/MacOSX/main_macosx.mm

@@ -73,6 +73,9 @@ const char ROM_FILE_NAME[] = "ROM";
 const int SCRATCH_MEM_SIZE = 0x10000;	// Size of scratch memory area
 
 
+static char *bundle = NULL;		// If in an OS X application bundle, its path
+
+
 // CPU and FPU type, addressing mode
 int CPUType;
 bool CPUIs68060;
@@ -181,6 +184,16 @@ static void sigsegv_dump_state(sigsegv_info_t *sip)
 }
 
 
+/*
+ * Screen fault handler
+ */
+
+bool Screen_fault_handler(sigsegv_info_t *sip)
+{
+	return true;
+}
+
+
 /*
  *  Main program
  */
@@ -241,6 +254,20 @@ int main(int argc, char **argv)
 	// Init system routines
 	SysInit();
 
+	// Set the current directory somewhere useful.
+	// Handy for storing the ROM file
+	bundle = strstr(argv[0], "BasiliskII.app/Contents/MacOS/BasiliskII");
+	if (bundle)
+	{
+		while (*bundle != '/')
+			++bundle;
+
+		*bundle = 0;  // Throw away Contents/... on end of argv[0]
+		bundle = argv[0];
+
+		chdir(bundle);
+	}
+
 	// Open display, attach to window server,
 	// load pre-instantiated classes from MainMenu.nib, start run loop
 	int i = NSApplicationMain(argc, (const char **)argv);
@@ -369,6 +396,9 @@ bool InitEmulator (void)
 	// Get rom file path from preferences
 	const char *rom_path = PrefsFindString("rom");
 	if ( ! rom_path )
+	  if ( bundle )
+		WarningAlert("No rom pathname set. Trying BasiliskII.app/ROM");
+	  else
 		WarningAlert("No rom pathname set. Trying ./ROM");
 
 	// Load Mac ROM