Hot fix #2 to amend lasp#85

redo/rules/build_executable.py

@@ -227,13 +227,14 @@ def _build(self, redo_1, redo_2, redo_3):
         # Iterate over each directory in the C source path list
         for directory in c_source_path:
             # Walk the directory and find all files
-            for files in os.listdir(directory):
-                for file in files:
-                    # Check if the file has one of the supported extensions
-                    basename, fext = os.path.splitext(file)
-                    if fext in source_extensions and \
-                       basename not in existing_c_basenames:
-                        c_source_exclude.append(os.path.basename(file))
+            for fname in os.listdir(directory):
+                # Check if the file has one of the supported extensions
+                full_file_path = os.path.join(directory, fname)
+                if os.path.isfile(full_file_path):
+                  basename, fext = os.path.splitext(fname)
+                  if fext in source_extensions and \
+                     basename not in existing_c_basenames:
+                      c_source_exclude.append(fname)
 
         # Sym link any c objects into the executable object directory, since
         # these would not have gotten symlinked like all the ada objects