The OpenSSL FIPS Object Module validation is unique among all FIPS 140-2 validations in that the product is "delivered" in source code form, meaning that if you can use it exactly as is and can build it for your platform according to a very specific set of instructions, then you can use it as validated cryptography.
The OpenSSL library is also unique in that you can download and use it for free.
If you require source code or build process changes for your intended application, then you cannot use the open source based validated module – you must obtain your own validation. This situation is common; see "Private Label" validation, below.