This is a suboptimal way of handling it, because it will cause the
compiler to instantiate all GUIDs in all compilation units. When linking
only one will be selected for the executable, but still it increases the
size of all object files. If it is to allow a precompiled header, I
suggest adding an additional guid.c file, that only includes the guid
headers, not the precompiled header.
Timo
Am 24.12.2013 21:58, schrieb akhaldi(a)svn.reactos.org:
  Author: akhaldi
 Date: Tue Dec 24 20:58:27 2013
 New Revision: 61381
 URL: 
http://svn.reactos.org/svn/reactos?rev=61381&view=rev
 Log:
 [USBSTOR]
 * Define INITGUID in the main header.
 CORE-7716
 Modified:
     trunk/reactos/drivers/usb/usbstor/usbstor.c
     trunk/reactos/drivers/usb/usbstor/usbstor.h
 Modified: trunk/reactos/drivers/usb/usbstor/usbstor.c
 URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbstor/usbsto…
 ==============================================================================
 --- trunk/reactos/drivers/usb/usbstor/usbstor.c        [iso-8859-1] (original)
 +++ trunk/reactos/drivers/usb/usbstor/usbstor.c        [iso-8859-1] Tue Dec 24 20:58:27
2013
 @@ -10,7 +10,6 @@
  /* INCLUDES ******************************************************************/
 -#define INITGUID
  #include "usbstor.h"
  #define NDEBUG
 Modified: trunk/reactos/drivers/usb/usbstor/usbstor.h
 URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/usb/usbstor/usbsto…
 ==============================================================================
 --- trunk/reactos/drivers/usb/usbstor/usbstor.h        [iso-8859-1] (original)
 +++ trunk/reactos/drivers/usb/usbstor/usbstor.h        [iso-8859-1] Tue Dec 24 20:58:27
2013
 @@ -1,5 +1,7 @@
  #pragma once
 +
 +#define INITGUID
  #include <ntddk.h>
  #include <usbdi.h>