Adds --add-custom-recipe to the update command

Custom recipes were built but not added to the XCode project.
See: kivy#642

.gitignore

@@ -5,6 +5,8 @@
 freetype-*
 build/*
 dist/*
+.eggs/*
+kivy_ios.egg-info/*
 src/SDL/Xcode-iPhoneOS/SDL/build/
 src/SDL/Xcode-iOS/SDL/build/
 tmp/*

kivy_ios/toolchain.py

@@ -1188,7 +1188,7 @@ def _hostpython_pip(args):
     shprint(pip_cmd, *args)
 
 
-def update_pbxproj(filename, pbx_frameworks=None):
+def update_pbxproj(filename, pbx_frameworks=None, custom_recipes=None):
     # list all the compiled recipes
     ctx = Context()
     pbx_libraries = []
@@ -1197,7 +1197,8 @@ def update_pbxproj(filename, pbx_frameworks=None):
     frameworks = []
     libraries = []
     sources = []
-    for recipe in Recipe.list_recipes():
+    recipes = custom_recipes + Recipe.list_recipes()
+    for recipe in recipes:
         key = "{}.build_all".format(recipe)
         if key not in ctx.state:
             continue
@@ -1458,6 +1459,8 @@ def update(self):
                 description="Update an existing xcode project")
         parser.add_argument("filename", help="Path to your project or xcodeproj")
         parser.add_argument("--add-framework", action="append", help="Additional Frameworks to include with this project")
+        parser.add_argument("--add-custom-recipe", action="append", default=[],
+                            help="Name of custom recipe to include in this project (the recipe must already have been built with the 'build' command)")
         args = parser.parse_args(sys.argv[2:])
 
         filename = self.find_xcodeproj(args.filename)
@@ -1466,7 +1469,7 @@ def update(self):
             logger.error("{} not found".format(filename))
             sys.exit(1)
 
-        update_pbxproj(filename, pbx_frameworks=args.add_framework)
+        update_pbxproj(filename, pbx_frameworks=args.add_framework, custom_recipes=add_custom_recipe)
         print("--")
         print("Project {} updated".format(filename))