The Windows MSVC2010 build tries to build the dynamic library, but doesn't pass the --dynamic-windows flag. This flag is required when building the dynamic library.

Unfortunately, we actually also want to test against the static windows runtime, not only the dynamic one. So, ideally, we would have three builds across all compilers:

• static mongo client lib, static windows runtime
• static mongo client lib, dynamic windows runtime
• dynamic mongo client lib, dynamic windows runtime.

However, when you multiply that across debug vs release and across compilers, that becomes a lot of windows builds.

We should come up with a plan for a subset that we believe gives us the right coverage. In the short term, just adding --dynamic-windows to this build is probably sufficient as the other builds will test static/static, and the mixed build is maybe more uncommon in practice.