On git master, consider three modules:

///////////////////////////////////
module system;

enum Endian
{
	bigEndian,   /// Big endian byte order
	littleEndian /// Little endian byte order
}

/// The endianness that the program was compiled for.
Endian endian = Endian.littleEndian;

///////////////////////////////////
module registry;
import system;

void _RVT_from_Endian(Endian endian) {}

///////////////////////////////////
module main;
import system, registry;

void main()
{
	_RVT_from_Endian(Endian.littleEndian);
}

///////////////////////////////////

Build a library with

   dmd -lib -ofreg.lib -g -m64 system.d registry.d

and link with main:

   dmd main.d -m64 -g reg.lib

reg.lib(registry_2_61c.obj) : fatal error LNK1103: debugging information corrupt; recompile module