diff --git a/check_config.py b/check_config.py
new file mode 100644
index 0000000..2963e28
--- /dev/null
+++ b/check_config.py
@@ -0,0 +1,84 @@
+'''
+<Program>
+ check_config.py
+
+<Purpose>
+"This is a tool for developers constructing build configuration files for 
+SeattleTestbed repositories. After running initialize.py and build.py on 
+your current init/build config for your repository, this script checks for 
+all of the dependencies you listed whether they require further repos checked 
+out and files copied, and prints a message for each missing sub-dependency. 
+See also https://seattle.poly.edu/wiki/BuildInstructions for a description of 
+the SeattleTestbed build process."
+
+<Usage>
+ python check_config.py
+ 
+'''
+
+import os
+
+def read_initconfig(filename):
+  content =[]
+  for line in open(filename, 'r'):
+    if line.startswith('#') or line.strip() == '':
+      continue
+    content.append(line.strip())
+  return content
+
+def read_buildconfig(filename, repo):
+  content =[]
+  for line in open(filename, 'r'):
+    if line.startswith('#') or line.strip() == '' or line.startswith('test'):
+      continue
+    if line.startswith("./"):
+      line = line.replace("./","DEPENDENCIES"+ os.sep + repo + os.sep)
+    content.append(line.strip())
+  return content
+
+def main():
+  # Set current_repo to the name of this repository's base directory. (This should be the repo's name.)
+  current_repo = os.path.basename(os.path.dirname(os.path.dirname(os.path.realpath(__file__))))
+
+  init_dependencies = read_initconfig('config_initialize.txt')
+  init_dependencies.append('https://github.com/SeattleTestbed/' + current_repo + ' ../DEPENDENCIES/' + current_repo)
+
+  init_result = {}
+  for repo in os.listdir("../DEPENDENCIES"):
+    if os.path.isdir("../DEPENDENCIES" + os.sep + repo):
+      for line in read_initconfig("../DEPENDENCIES"+ os.sep + repo + os.sep +"scripts/config_initialize.txt"):
+        url = line.strip()
+        if url not in init_dependencies:
+          try:
+            init_result[repo].append(url)
+          except KeyError:
+            init_result[repo] = [url]
+
+  print "Additionally required in config_initialize.txt\n"
+
+  for dependency,config in init_result.items():
+    print "# Additionally required by dependency " + dependency + ":"
+    for setting in config:
+      print setting
+
+  build_dependencies = read_buildconfig('config_build.txt',current_repo)
+
+  build_result = {}
+  for repo in os.listdir("../DEPENDENCIES"):
+    if os.path.isdir("../DEPENDENCIES" + os.sep + repo):
+      for line in read_buildconfig("../DEPENDENCIES"+ os.sep + repo + os.sep +"scripts/config_build.txt",repo):
+        if line.strip() not in build_dependencies:
+          try:
+            build_result[repo].append(line)
+          except KeyError:
+            build_result[repo] = [line]
+
+  print "\nAdditionally required in config_build.txt\n"
+
+  for dependency,config in build_result.items():
+    print "# Additionally required by dependency " + dependency + ":"
+    for setting in config:
+      print setting
+
+if __name__ == '__main__':
+  main()