On Wednesday, 21 March 2018 at 08:30:54 UTC, Vitalii wrote:
In earlier version 2.073.3 of DMD compiler 32-bit version of "mydll" builds successfully, but 64-bit get the same error messages as above. I use 64-bit path settings. DMD compiler version 2.079.0, Windows 7 Pro (6.1, build 7601: Service Pack 1).
-m64 uses the MS linker, not Optlink. You don't need /IMPLIB for that unless you intend to change the default name for the generated import library. This should build a 64-bit DLL for you:
dmd -m64 -ofmydll.dll -L/DLL mydll.d dll.d
