waf: added --sitl-flash-storage option

Tools/ardupilotwaf/boards.py

@@ -338,6 +338,9 @@ class sitl(Board):
                 if fnmatch.fnmatch(f, "font*bin"):
                     env.ROMFS_FILES += [(f,'libraries/AP_OSD/fonts/'+f)]
 
+        if cfg.options.sitl_flash_storage:
+            env.CXXFLAGS += ['-DSTORAGE_USE_FLASH=1']
+
         if cfg.env.DEST_OS == 'cygwin':
             env.LIB += [
                 'winmm',

wscript

@@ -178,6 +178,11 @@ configuration in order to save typing.
                  default=False,
                  help="Enable SFML graphics library")
 
+    g.add_option('--sitl-flash-storage',
+        action='store_true',
+        default=False,
+        help='Configure for building SITL with flash storage emulation.')
+    
     g.add_option('--static',
         action='store_true',
         default=False,