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diff --git a/polkitqt1-version.h.cmake b/polkitqt1-version.h.cmake
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+/*
+ * Copyright (C) 2007 Sebastian Trueg <trueg@kde.org>
+ * Copyright (C) 2009 Dario Freddi <drf@kde.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _POLKITQT1_VERSION_H_
+#define _POLKITQT1_VERSION_H_
+
+#include "polkitqt1-export.h"
+
+/// @brief PolkitQt-1 version as string at compile time.
+#define POLKITQT1_VERSION_STRING "${POLKITQT-1_VERSION_STRING}"
+
+/// @brief The major PolkitQt-1 version number at compile time
+#define POLKITQT1_VERSION_MAJOR ${POLKITQT-1_VERSION_MAJOR}
+
+/// @brief The minor PolkitQt-1 version number at compile time
+#define POLKITQT1_VERSION_MINOR ${POLKITQT-1_VERSION_MINOR}
+
+/// @brief The PolkitQt-1 patch version number at compile time
+#define POLKITQT1_VERSION_PATCH ${POLKITQT-1_VERSION_PATCH}
+
+/**
+ * \brief Create a unique number from the major, minor and release number of a %PolkitQt-1 version
+ *
+ * This function can be used for preprocessing. For version information at runtime
+ * use the version methods in the PolkitQt-1 namespace.
+ */
+#define POLKITQT1_MAKE_VERSION( a,b,c ) (((a) << 16) | ((b) << 8) | (c))
+
+/**
+ * \brief %PolkitQt-1 Version as a unique number at compile time
+ *
+ * This macro calculates the %PolkitQt-1 version into a number. It is mainly used
+ * through POLKITQT1_IS_VERSION in preprocessing. For version information at runtime
+ * use the version methods in the PolkitQt-1 namespace.
+ */
+#define POLKITQT1_VERSION \
+    POLKITQT1_MAKE_VERSION(POLKITQT1_VERSION_MAJOR,POLKITQT1_VERSION_MINOR,POLKITQT1_VERSION_PATCH)
+
+/**
+ * \brief Check if the %PolkitQt-1 version matches a certain version or is higher
+ *
+ * This macro is typically used to compile conditionally a part of code:
+ * \code
+ * #if POLKITQT1_IS_VERSION(2,1)
+ * // Code for PolkitQt-1 2.1
+ * #else
+ * // Code for PolkitQt-1 2.0
+ * #endif
+ * \endcode
+ *
+ * For version information at runtime
+ * use the version methods in the PolkitQt-1 namespace.
+ */
+#define POLKITQT1_IS_VERSION(a,b,c) ( POLKITQT1_VERSION >= POLKITQT1_MAKE_VERSION(a,b,c) )
+
+
+namespace PolkitQt1 {
+    /**
+     * @brief Returns the major number of PolkitQt-1's version, e.g.
+     * 1 for %PolkitQt-1 1.0.2.
+     * @return the major version number at runtime.
+     */
+    POLKITQT1_EXPORT unsigned int versionMajor();
+
+    /**
+     * @brief Returns the minor number of PolkitQt-1's version, e.g.
+     * 0 for %PolkitQt-1 1.0.2.
+     * @return the minor version number at runtime.
+     */
+    POLKITQT1_EXPORT unsigned int versionMinor();
+
+    /**
+     * @brief Returns the patch number of PolkitQt-1's version, e.g.
+     * 2 for %PolkitQt-1 1.0.2.
+     * @return the release number at runtime.
+     */
+    POLKITQT1_EXPORT unsigned int versionPatch();
+
+    /**
+     * @brief Returns the %PolkitQt-1 version as string, e.g. "1.0.2".
+     *
+     * On contrary to the macro POLKITQT1_VERSION_STRING this function returns
+     * the version number of PolkitQt-1 at runtime.
+     * @return the %PolkitQt-1 version. You can keep the string forever
+     */
+    POLKITQT1_EXPORT const char* versionString();
+}
+
+#endif