My Situation:
Embarcadero RAD Studio 11.2 created 64-bit dlls with a library file that used the extension “.a”.

In the newest Embarcadero RAD Studio 12.1 there is a new 64-bit compiler named “Windows 64-bit (modern)”. This compiler creates dlls and a library file with the extension “.lib”

I am trying to use my existing 64-bit dlls which have the “.a” library file, in projects using the new RAD Studio 12.1 Windows 64-bit (modern) compiler. RAD Studio 12.1 allows me to add the “.a” library file to the project but the compiler gives the error [ld.lld Error] ld.lld: error: unknown file type: MyDll.

My Question:
How can I use an Embarcadero 64-bit dll with the “.a” library file, in an application created with the new Embarcadero compiler “Windows 64-bit (modern)”?

I did see the blog post below describing creating a dll import library, but there is no indication this should be used with dlls created by Embarcadero RAD Studio.

Creating Dll Import Library