Externals when migrating from SVN to GIT

Ok, I've read it all, and tried to find solutions to my problem to no avail, so was wondering if anyone would be able to give me the ultimate solution to the migration issue I'm having.

It's to do with using SVN externals in GIT, so hold on to your chairs.

I have looked at the following topics only to find that no one has the exact same setup as I have.

• git submodule svn external
• git: How do you add an external directory to the repository?
• What happens when I clone a repository with symlinks on Windows?
• Git Symlinks in Windows

Now my setup is really not that complicated, but I can't work out a way to get it working the way I need it. I have:

• Project1
  • Core
  • Libs

I then have in my main project

• MainProject
  • MainFolder
    • file.cs
    • file1.cs
    • file2.cs
    • Core (external of Project1)
  • Libs (external of Project1)

Obviously this is fine on SVN, as you can use externals, but with sub-modules, you can only create them pointing to the root of the repository, which in this case doesn't quite work for me, since I have both Core and Libs on the same repository. Moving them out isn't an option at this point, since we're still in the migration process, and I need to keep constantly syncing them.

I then thought I could just go and use symlinks (notice I'm on a windows environment), as this way I would be able to checkout my Project1 repository at the same level as my MainProject, and via symlinks make sure my project still thinks everything is where it should.

This magically worked, however, upon doing git status I now noticed Project1 was marked as Untracked files, and by committing this and pushing, and checking out again, my symlink was gone, and I now had a hard copy of my Project1 repository copied into MainProject.

This obviously turned out to be a bit of a nightmare ow, so I was just wondering if anyone could help me with this, and maybe point me towards the right direction.

Thanks in advance,

Marcos