[Mingw-users] Circular dependency between oaidl.h and oleauto.h

[LIM Fung-C. <lim...@gm...>]

Hi,

I am encountering lots of compiler error messages when compiling
VirtualDimension from CVS (cvs -z3
-d:pserver:ano...@vi...:/cvsroot/virt-dimension
co -P VirtualDimension after logging in anonymously; see
http://sourceforge.net/scm/?type=cvs&group_id=74581).  I am using the latest
MinGW software (mingw-get-inst-20110530.exe).

I traced the problem to a circular dependency between oaidl.h and
oleauto.h.  The error messages disappeared when I applied the following
patch.

--- oaidl.h~    2011-03-26 11:45:55.000000000 +0800
+++ oaidl.h     2011-06-20 14:00:27.097726100 +0800
@@ -1,14 +1,14 @@
+#ifndef COM_NO_WINDOWS_H
+#include <windows.h>
+#include <ole2.h>
+#endif
+
 #ifndef _OAIDL_H
 #define _OAIDL_H
 #if __GNUC__ >= 3
 #pragma GCC system_header
 #endif

-#ifndef COM_NO_WINDOWS_H
-#include <windows.h>
-#include <ole2.h>
-#endif
-
 #ifdef __cplusplus
 extern "C" {
 #endif

I managed to build VirtualDimension.  However, I couldn't launch
VirtualDimension by double-clicking on its icon; I get the message
The program can't start because libgcc_s_dw2-1.dll is missing from your
computer.  Try reinstalling the program to fix this problem.
Does this mean that the gcc dll needs to be distributed with the
VirtualDimension binary?  I thought this is against the minimalistic
principle of MinGW.  Please advise on this and the above patch.  Thank you.

Regards,
Fung Chai.

-- 
FWIW: $\lnot \exists x \, {\rm Right} (x) \leftarrow \forall x \, {\rm
Wrong} (x)$ \hfill -- Stephen Stills

Freedom's just another word for nothin' left to lose -- Kris Kristofferson