Do not allow a module exists both in provideLibs and requireLibs

There was an issue that a library installed in the system with stub is
manually marked as requireLibs, so it created link to the self (system)
namespace from linkerconfig. This change checks from conv_linker_config
if there is any common module in provideLibs and requireLibs before
write result to output path.

Bug: 298333253
Test: Build failed when the common module is not removed.
Change-Id: I855dfc3484bb6c1fec24d498703c4a2a805913c0

scripts/conv_linker_config.py

@@ -62,8 +62,8 @@ def Proto(args):
     if args.source:
         for input in args.source.split(':'):
             pb.MergeFrom(LoadJsonMessage(input))
-    with open(args.output, 'wb') as f:
-        f.write(pb.SerializeToString())
+
+    ValidateAndWriteAsPbFile(pb, args.output)
 
 
 def Print(args):
@@ -90,8 +90,8 @@ def SystemProvide(args):
     for item in installed_libraries:
         if item not in getattr(pb, 'provideLibs'):
             getattr(pb, 'provideLibs').append(item)
-    with open(args.output, 'wb') as f:
-        f.write(pb.SerializeToString())
+
+    ValidateAndWriteAsPbFile(pb, args.output)
 
 
 def Append(args):
@@ -106,8 +106,8 @@ def Append(args):
     else:
         setattr(pb, args.key, args.value)
 
-    with open(args.output, 'wb') as f:
-        f.write(pb.SerializeToString())
+    ValidateAndWriteAsPbFile(pb, args.output)
+
 
 
 def Merge(args):
@@ -116,8 +116,7 @@ def Merge(args):
         with open(other, 'rb') as f:
             pb.MergeFromString(f.read())
 
-    with open(args.out, 'wb') as f:
-        f.write(pb.SerializeToString())
+    ValidateAndWriteAsPbFile(pb, args.output)
 
 
 def Validate(args):
@@ -151,6 +150,29 @@ def Validate(args):
         sys.exit(f'Unknown type: {args.type}')
 
 
+def ValidateAndWriteAsPbFile(pb, output_path):
+    ValidateConfiguration(pb)
+    with open(output_path, 'wb') as f:
+        f.write(pb.SerializeToString())
+
+
+def ValidateConfiguration(pb):
+    """
+    Validate if the configuration is valid to be used as linker configuration
+    """
+
+    # Validate if provideLibs and requireLibs have common module
+    provideLibs = set(getattr(pb, 'provideLibs'))
+    requireLibs = set(getattr(pb, 'requireLibs'))
+
+    intersectLibs = provideLibs.intersection(requireLibs)
+
+    if intersectLibs:
+        for lib in intersectLibs:
+            print(f'{lib} exists both in requireLibs and provideLibs', file=sys.stderr)
+        sys.exit(1)
+
+
 def GetArgParser():
     parser = argparse.ArgumentParser()
     subparsers = parser.add_subparsers()