Ms-Pl license: Do I have to disclose the source code of a program using a Ms-Pl licensed library?

Programmer Question

Here is what I want to do:

• Modify an MS-PL licensed library so that it suits my needs


• Use the compiled form of said library in my closed source program (linked dynamically)


• Ship the program and the library in binary form


• Ship the source of the modified library with the program and continue licensing it under MS-PL (if legally necessary)

Is this legal?

MS-PL is the Microsoft Public/Permissive License and is used for many Codeplex projects. You can find it here: http://www.microsoft.com/opensource/licenses.mspx

Find the answer here