no need to statically link against the emfio library in the tests

ODR-violation found by ASAN:

==17022==ERROR: AddressSanitizer: odr-violation (0x2b86adb17c60):
[1] size=352 'vtable for emfio::emfreader::XEmfParser' /home/tdf/lode/jenkins/workspace/lo_ubsan/emfio/source/emfuno/xemfparser.cxx
[2] size=352 'vtable for emfio::emfreader::XEmfParser' /home/tdf/lode/jenkins/workspace/lo_ubsan/emfio/source/emfuno/xemfparser.cxx
These globals were registered at these points:
[1]:
#0 0x443a73 in __asan_register_globals /home/tdf/lode/packages/llvm-3.8.0.src/projects/compiler-rt/lib/asan/asan_globals.cc:218
#1 0x2b86bea2dced in asan.module_ctor (/workdir/LinkTarget/CppunitTest/libtest_emfio_wmf.so+0x1a0ced)
#2 0x7fff394ad75a  (<unknown module>)

[2]:
#0 0x443a73 in __asan_register_globals /home/tdf/lode/packages/llvm-3.8.0.src/projects/compiler-rt/lib/asan/asan_globals.cc:218
#1 0x2b86ad6e862d in asan.module_ctor (/workdir/LinkTarget/CppunitTest/libtest_emfio_emf.so+0x18862d)
#2 0x7fff394ad75a  (<unknown module>)

Change-Id: Id98677a3692ac6a0586164aa5d0a2c82ab26f916
Reviewed-on: https://gerrit.libreoffice.org/40029
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>

2 files changed, 40 insertions, 2 deletions

diff --git a/emfio/inc/emfiodllapi.h b/emfio/inc/emfiodllapi.h
new file mode 100644
index 000000000000..8a7cac187f25
--- /dev/null
+++ b/emfio/inc/emfiodllapi.h
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_EMFIO_INC_EMFIODLLAPI_H
+#define INCLUDED_EMFIO_INC_EMFIODLLAPI_H
+
+#include <sal/types.h>
+
+#if defined(EMFIO_DLLIMPLEMENTATION)
+#define EMFIO_DLLPUBLIC  SAL_DLLPUBLIC_EXPORT
+#else
+#define EMFIO_DLLPUBLIC  SAL_DLLPUBLIC_IMPORT
+#endif
+
+#endif // INCLUDED_EMFIO_INC_EMFIODLLAPI_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/emfio/inc/mtftools.hxx b/emfio/inc/mtftools.hxx
index 2d14d9cfe633..38fff789a053 100644
--- a/emfio/inc/mtftools.hxx
+++ b/emfio/inc/mtftools.hxx
@@ -30,6 +30,8 @@
 #include <vcl/outdevstate.hxx>
 #include <vcl/FilterConfigItem.hxx>
 
+#include "emfiodllapi.h"
+
 #define ERROR                   0
 #define NULLREGION              1
 #define COMPLEXREGION           3
@@ -298,7 +300,7 @@ namespace emfio
         virtual ~GDIObj() = default; // Polymorphic base class
     };
 
-    struct WinMtfFontStyle : GDIObj
+    struct EMFIO_DLLPUBLIC WinMtfFontStyle : GDIObj
     {
         vcl::Font    aFont;
 
@@ -438,8 +440,11 @@ namespace emfio
         {}
     };
 
-    class MtfTools
+    class EMFIO_DLLPUBLIC MtfTools
     {
+        MtfTools(MtfTools &) = delete;
+        void operator =(MtfTools) = delete;
+
     protected:
         WinMtfPathObj       maPathObj;
         WinMtfClipPath      maClipPath;