Errors building on windows

I am getting the following errors:

loadlib.c(114): error C2373: '__pfnDliFailureHook2': redefinition;
different type modifiers
C:\Program Files (x86)\Microsoft Visual Studio
14.0\VC\INCLUDE\delayimp.h(141): note: see declaration of '__pfnDliFailur
eHook2'
loadlib.c(115): error C2373: '__pfnDliNotifyHook2': redefinition; different
type modifiers
C:\Program Files (x86)\Microsoft Visual Studio
14.0\VC\INCLUDE\delayimp.h(134): note: see declaration of '__pfnDliNotify
Hook2'
loadlib.c(129): error C2166: l-value specifies const object
loadlib.c(190): error C2166: l-value specifies const object
loadlib.c(198): error C2166: l-value specifies const object
loadlib.c(229): error C2166: l-value specifies const object
loadlib.c(237): error C2166: l-value specifies const object

Which appear to be from:

// Prior to Visual Studio 2015 Update 3, these hooks were non-const. They
were
// made const to improve security (global, writable function pointers are
bad).
// If for backwards compatibility you require the hooks to be writable,
define
// the macro DELAYIMP_INSECURE_WRITABLE_HOOKS prior to including this
header and
// provide your own non-const definition of the hooks.
ExternC
#ifndef DELAYIMP_INSECURE_WRITABLE_HOOKS
const
#endif
PfnDliHook __pfnDliNotifyHook2;

// This is the failure hook, dliNotify = {dliFailLoadLib|dliFailGetProc}
ExternC
#ifndef DELAYIMP_INSECURE_WRITABLE_HOOKS
const
#endif
PfnDliHook __pfnDliFailureHook2;

It would appear we need to define DELAYIMP_INSECURE_WRITABLE_HOOKS. Is
there another way to set the hook to NULL

Dave Cramer