nargs="*" -> action="append"

tools/build.py

@@ -44,7 +44,7 @@
     parser = get_default_options_parser()
 
     parser.add_argument("--source", dest="source_dir", type=argparse_filestring_type,
-                        default=None, help="The source (input) directory", nargs="*")
+                        default=None, help="The source (input) directory", action="append")
 
     parser.add_argument("--build", dest="build_dir", type=argparse_filestring_type,
                       default=None, help="The build (output) directory")
@@ -107,7 +107,7 @@
                       help="Compiles 'cpputest' unit test library (library should be on the same directory level as mbed repository)")
 
     parser.add_argument("-D",
-                      nargs="*",
+                      action="append",
                       dest="macros",
                       help="Add a macro definition")
 

tools/get_config.py

@@ -38,8 +38,8 @@
     # Parse Options
     parser = get_default_options_parser(add_clean=False, add_options=False)
     parser.add_argument("--source", dest="source_dir", type=argparse_filestring_type,
-                        default=[], help="The source (input) directory", nargs="*")
-    parser.add_argument("--prefix", dest="prefix", nargs="*",
+                        default=[], help="The source (input) directory", action="append")
+    parser.add_argument("--prefix", dest="prefix", action="append",
                       default=[], help="Restrict listing to parameters that have this prefix")
     parser.add_argument("-v", "--verbose", action="store_true", dest="verbose",
                       default=False, help="Verbose diagnostic output")

tools/make.py

@@ -80,7 +80,7 @@
                       help="Silent diagnostic output (no copy, compile notification)")
 
     parser.add_argument("-D",
-                      nargs="*",
+                      action="append",
                       dest="macros",
                       help="Add a macro definition")
 

tools/options.py

@@ -42,7 +42,7 @@ def get_default_options_parser(add_clean=True, add_options=True):
                       help="clean the build directory")
 
     if add_options:
-        parser.add_argument("-o", "--options", nargs="*",
+        parser.add_argument("-o", "--options", action="append",
                           help='Add a build argument ("save-asm": save the asm generated by the compiler, "debug-info": generate debugging information, "analyze": run Goanna static code analyzer")',
                           type=argparse_lowercase_hyphen_type(['save-asm', 'debug-info', 'analyze'], "build option"))
 

tools/project.py

@@ -84,14 +84,14 @@
                       help="writes tools/export/README.md")
 
     parser.add_argument("--source",
-                      nargs="*",
+                      action="append",
                       type=argparse_filestring_type,
                       dest="source_dir",
                       default=[],
                       help="The source (input) directory")
 
     parser.add_argument("-D",
-                      nargs="*",
+                      action="append",
                       dest="macros",
                       help="Add a macro definition")
 

tools/test.py

@@ -41,7 +41,7 @@
         parser = get_default_options_parser()
 
         parser.add_argument("-D",
-                          nargs="*",
+                          action="append",
                           dest="macros",
                           help="Add a macro definition")
 
@@ -53,7 +53,7 @@
 
         parser.add_argument("--source", dest="source_dir",
                           type=argparse_filestring_type,
-                            default=None, help="The source (input) directory (for sources other than tests). Defaults to current directory.", nargs="*")
+                            default=None, help="The source (input) directory (for sources other than tests). Defaults to current directory.", action="append")
 
         parser.add_argument("--build", dest="build_dir",
                           default=None, help="The build (output) directory")