How to link multiple visual studio solutions together?

Question

I have 3 solutions and solution A requires built versions of the dlls from solution B and C in order to compile. it is not possible to merge it to one solution...

So far

Answer 1

You can add a Makefile project to solution A which would build your solutions B and C (using msbuild for example) and make all the projects in A dependent on that Makefile project. This way you wouldn't be able to add project references to projects in B and C, but you can use dll references and they will always be built from latest sources.