diff --git a/scripts/buld.py b/scripts/buld.py
index 87a6dda..723a4cc 100644
--- a/scripts/buld.py
+++ b/scripts/buld.py
@@ -2,12 +2,22 @@ import os
 
 import settings
 import instruments
+import argparse
 
 cmd_args = {'version' : '1.2.3', 'some_field' : 'some_value', 'action' : 'build'}
+keys = instruments.GetConfigKeys(settings.build_ready_configs)
 
-instruments.CompileConfigs(settings.build_ready_configs, cmd_args)
+parser = argparse.ArgumentParser()
+for key in keys:
+	arg = "--{0}".format(key)
+	parser.add_argument(arg)
 
-for bc in settings.build_ready_configs:
+args = parser.parse_args()
+print vars(args)
+
+build_ready_configs = instruments.GetUnionConfigs(settings.build_ready_configs, cmd_args)
+
+for bc in build_ready_configs:
 	print bc['name']
 
 	sln_path = bc['sln_path']
diff --git a/scripts/instruments.py b/scripts/instruments.py
index a9795dd..1fe2247 100644
--- a/scripts/instruments.py
+++ b/scripts/instruments.py
@@ -86,19 +86,35 @@ def BuildSolution(mdtool, abs_path_to_sln, config):
 	ret_code = call(build_cmd_text, shell=True)
 	print('finished with return code: {0}'.format(ret_code))
 
-def CompileConfigs(configs_lst, cmd_args):
+def GetUnionConfigs(configs_lst, cmd_args=None):
 
+	union_configs = []
 	for c_dict in configs_lst:
 
 		ancestors = GetAncestorsFromRootTo(c_dict)
-		ancestors.append(cmd_args)
+		if cmd_args is not None:
+			ancestors.append(cmd_args)
 
 		union_config = {}
 		for a in ancestors:
 			union_config.update(a)
 
-		c_dict.clear()
-		c_dict.update(union_config)
+		union_configs.append(union_config)
+
+	return union_configs
+
+def GetConfigKeys(configs_lst):
+	union_configs = GetUnionConfigs(configs_lst)
+
+	keys = [];
+	for config in union_configs:
+		for key in config.keys():
+			keys.append(key)
+
+	# remove duplicates
+	keys = list(set(keys))
+
+	return keys
 
 def GetAncestorsFromRootTo(config):