diff -r 000000000000 -r bde4ae8d615e os/ossrv/compressionlibs/ziplib/group/libz/bld.inf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/ossrv/compressionlibs/ziplib/group/libz/bld.inf	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,37 @@
+// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+// define the macro SYMBIAN_ZLIB_BUILD91 for building against 9.1 release, as back-slashes are required instead
+// of forward-slashes in BLD.INF and MMP files.
+#ifdef SYMBIAN_ZLIB_BUILD91
+
+PRJ_EXPORTS
+..\..\inc\zlib.h			\epoc32\include\stdapis\zlib.h
+..\..\inc\zconf.h			\epoc32\include\stdapis\zconf.h
+PRJ_MMPFILES
+libzcore_build91.mmp
+libz_build91.mmp
+
+#else
+
+PRJ_EXPORTS
+../../inc/zlib.h			SYMBIAN_OS_LAYER_PUBLIC_EXPORT_PATH(stdapis/zlib.h)
+../../inc/zconf.h			SYMBIAN_OS_LAYER_PUBLIC_EXPORT_PATH(stdapis/zconf.h)
+PRJ_MMPFILES
+libzcore.mmp
+libz.mmp
+
+#endif
+