adds --custom-targets argument anywhere extract_mcus is called

tools/build.py

@@ -53,6 +53,9 @@ if __name__ == '__main__':
     parser.add_argument("--source", dest="source_dir", type=argparse_filestring_type,
                         default=None, help="The source (input) directory", action="append")
 
+    parser.add_argument("--custom-targets", dest="custom_targets_directory", type=argparse_filestring_type,
+                        default=None, help="Specify directory containing custom_targets.json", action="append")
+
     parser.add_argument("--build", dest="build_dir", type=argparse_dir_not_parent(ROOT),
                       default=None, help="The build (output) directory")
 

tools/device_management.py

@@ -68,6 +68,7 @@ class MbedExtendedArgs(MainArgumentParser):
             parser.add_argument('-m', '--mcu')
             parser.add_argument('-t', '--toolchain')
             parser.add_argument('--source', nargs='+', dest='source_dir')
+            parser.add_argument('--custom-targets', dest='custom_targets_directory')
             parser.add_argument('--build')
             exclusions.append('payload')
         super(MbedExtendedArgs, self)._addCreateArgs(parser, exclusions)

tools/get_config.py

@@ -39,6 +39,11 @@ if __name__ == '__main__':
         "--source", dest="source_dir", type=argparse_filestring_type,
         required=True, default=[], help="The source (input) directory",
         action="append")
+    parser.add_argument(
+        "--custom-targets", dest="custom_targets_directory",
+        type=argparse_filestring_type, default=[],
+        help="Specify directory containing custom_targets.json",
+        action="append")
     parser.add_argument(
         "--prefix", dest="prefix", action="append", default=[],
         help="Restrict listing to parameters that have this prefix")

tools/make.py

@@ -202,6 +202,14 @@ if __name__ == '__main__':
         action="append",
         help="The source (input) directory"
     )
+    parser.add_argument(
+        "--custom-targets",
+        dest="custom_targets_directory",
+        type=argparse_filestring_type,
+        default=None,
+        action="append",
+        help="Specify directory containing custom_targets.json"
+    )
     parser.add_argument(
         "--duration",
         type=int,

tools/project.py

@@ -270,6 +270,15 @@ def get_args(argv):
         help="The source (input) directory"
     )
 
+    parser.add_argument(
+        "--custom-targets",
+        action="append",
+        type=argparse_filestring_type,
+        dest="custom_targets_directory",
+        default=[],
+        help="Specify directory containing custom_targets.json"
+    )
+
     parser.add_argument(
         "-D",
         action="append",

tools/test.py

@@ -65,6 +65,10 @@ if __name__ == '__main__':
                           type=argparse_filestring_type,
                             default=None, help="The source (input) directory (for sources other than tests). Defaults to current directory.", action="append")
 
+        parser.add_argument("--custom-targets", dest="custom_targets_directory",
+                            type=argparse_filestring_type,
+                            default=None, help="Specify directory containing custom_targets.json", action="append")
+
         parser.add_argument("--build", dest="build_dir", type=argparse_dir_not_parent(ROOT),
                           default=None, help="The build (output) directory")