undefined reference to opEquals: Linker errors with Derelict3 Bindings to SDL2

undefined reference to opEquals: Linker errors with Derelict3 Bindings to
SDL2

I am trying to write a simple hello world using the Derelict3 bindings for
SDL2. I am getting errors during linking that I have not seen before.
module main;
import derelict.sdl2.sdl;
pragma(lib, "DerelictSDL2");
pragma(lib, "DerelictUtil");
pragma(lib, "dl");
int main(string[] args)
{
DerelictSDL2.load();
return 0;
}
command line:
dmd src/main.d -debug -Iinclude -Isrc -L-Llib -L-lSDL2
output:
> lib/libDerelictSDL2.a(sdl_55_698.o):(.rodata+0x41e8): undefined
reference to `_D6object6Object8opEqualsMFC6ObjectC6ObjectZb'
> lib/libDerelictUtil.a(exception_9b_6db.o):(.rodata+0xe8): undefined
> reference to `_D6object6Object8opEqualsMFC6ObjectC6ObjectZb'
> lib/libDerelictUtil.a(exception_9d_89d.o):(.rodata+0x178): undefined
> reference to `_D6object6Object8opEqualsMFC6ObjectC6ObjectZb'
> lib/libDerelictUtil.a(exception_9e_7a5.o):(.rodata+0x118): undefined
> reference to `_D6object6Object8opEqualsMFC6ObjectC6ObjectZb' collect2:
> ld returned 1 exit status
> --- errorlevel 1
what I have tried:
verify that Derelict3 and SDL2 are up-to-date
changing the order of my linked libraries
searching online: I could only find 1 other post related to this:
http://dblog.aldacron.net/forum/index.php?topic=834.0
I am using DMD64 D Compiler v2.063.2. Any help is appreciated. Thanks.