1 files changed, 118 insertions, 0 deletions
diff --git a/src/dbus/qdbus_symbols.cpp b/src/dbus/qdbus_symbols.cpp
new file mode 100644
index 0000000000..a62d52e04e
--- /dev/null
+++ b/src/dbus/qdbus_symbols.cpp
@@ -0,0 +1,118 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDBus module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore/qglobal.h>
+#include <QtCore/qlibrary.h>
+#include <QtCore/qmutex.h>
+#include <private/qmutexpool_p.h>
+
+#ifndef QT_NO_DBUS
+
+QT_BEGIN_NAMESPACE
+
+void *qdbus_resolve_me(const char *name);
+
+#if !defined QT_LINKED_LIBDBUS
+
+static QLibrary *qdbus_libdbus = 0;
+
+void qdbus_unloadLibDBus()
+{
+    delete qdbus_libdbus;
+    qdbus_libdbus = 0;
+}
+
+bool qdbus_loadLibDBus()
+{
+    static volatile bool triedToLoadLibrary = false;
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(QMutexPool::globalInstanceGet((void *)&qdbus_resolve_me));
+#endif
+    QLibrary *&lib = qdbus_libdbus;
+    if (triedToLoadLibrary)
+        return lib && lib->isLoaded();
+
+    lib = new QLibrary;
+    triedToLoadLibrary = true;
+
+    static int majorversions[] = { 3, 2, -1 };
+    lib->unload();
+    lib->setFileName(QLatin1String("dbus-1"));
+    for (uint i = 0; i < sizeof(majorversions) / sizeof(majorversions[0]); ++i) {
+        lib->setFileNameAndVersion(lib->fileName(), majorversions[i]);
+        if (lib->load() && lib->resolve("dbus_connection_open_private"))
+            return true;
+
+        lib->unload();
+    }
+
+    delete lib;
+    lib = 0;
+    return false;
+}
+
+void *qdbus_resolve_conditionally(const char *name)
+{
+    if (qdbus_loadLibDBus())
+        return qdbus_libdbus->resolve(name);
+    return 0;
+}
+
+void *qdbus_resolve_me(const char *name)
+{
+    void *ptr = 0;
+    if (!qdbus_loadLibDBus())
+        qFatal("Cannot find libdbus-1 in your system to resolve symbol '%s'.", name);
+
+    ptr = qdbus_libdbus->resolve(name);
+    if (!ptr)
+        qFatal("Cannot resolve '%s' in your libdbus-1.", name);
+
+    return ptr;
+}
+
+Q_DESTRUCTOR_FUNCTION(qdbus_unloadLibDBus)
+
+#endif // QT_LINKED_LIBDBUS
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_DBUS