Linking error LNK2019 with gridmap_2d.dll when compiling humanoid_navigation on ROS on Windows Melodic

[Smitty-44]

Hi there,
I have an Robotis OP3-like biped and successfully compiled all the required Robotis OP3 related packages on a raspberry Pi4, linux with raspbian, ROS Melodic.
But, I have a Windows 10 desktop with ROS on Windows, Melodic, as the remote computer.
During the catkin_make of the workspace, it receives an error during the linking step of gridmap_2d.dll of the humanoid_navigation package.

GridMap2D.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: static class ros::Time __cdecl ros::Time::now(void)" (imp?now@Time@ros@@sa?AV12@XZ) referenced in function "public: struct nav_msgs::OccupancyGrid<class std::allocator > _cdecl gridmap_2d::GridMap2D::toOccupancyGridMsg(void)const " (?toOccupancyGridMsg@GridMap2D@gridmap_2d@@qeba?AU?$OccupancyGrid@v?$allocator@Xstd@@@nav_msgs@@xz)...

All together there are 7 unresolved externals.
Has anyone seen this before or have any ideas how to get past it?
Thank you for any help or guidance,
Cheers, Smitty