Make sure you have LDC installed. If you need to, read Cross compiling with LDC
In this example we will target x64 Windows.
Download the Windows libraries, for example:
https://github.com/ldc-developers/ldc/releases/download/v1.35.0/ldc2-1.35.0-windows-x64.7z
Unpack lib to /path/to/your/lib
Locate your ldc2.conf and create a section for your target.
It could look like this (notice lib-dirs):
"x86_64-.*-windows-msvc":
{
switches = [
"-defaultlib=phobos2-ldc,druntime-ldc",
];
lib-dirs = [
"/path/to/your/lib",
];
};
Now, navigate to your dub-project and run
dub build --arch=x86_64-windows-msvc