telepathy-qt: Added TP_QT_VERSION and TP_QT_VERSION_CHECK macros.

[David Edmundson]

Module: telepathy-qt
Branch: master
Commit: 099dd1c08450d35f699a553e2407356a8969122a
URL:    http://cgit.freedesktop.org/telepathy/telepathy-qt/commit/?id=099dd1c08450d35f699a553e2407356a8969122a

Author: Alexandr Akulich <akulichalexander at gmail.com>
Date:   Sun Jan  4 22:25:29 2015 +0600

Added TP_QT_VERSION and TP_QT_VERSION_CHECK macros.

---

 TelepathyQt/CMakeLists.txt            |    4 +++-
 TelepathyQt/{global.h => global.h.in} |   20 ++++++++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/TelepathyQt/CMakeLists.txt b/TelepathyQt/CMakeLists.txt
index 000c63b..0489975 100644
--- a/TelepathyQt/CMakeLists.txt
+++ b/TelepathyQt/CMakeLists.txt
@@ -7,6 +7,8 @@ set(LD_FLAGS "${LD_FLAGS} ${VISIBILITY_HIDDEN_FLAGS} ${COMPILER_COVERAGE_FLAGS}
 # We are building Telepathy-Qt
 add_definitions(-DBUILDING_TP_QT)
 
+configure_file(global.h.in ${CMAKE_CURRENT_BINARY_DIR}/global.h)
+
 # Sources for Tp-Qt
 set(telepathy_qt_SRCS
     abstract-client.cpp
@@ -346,7 +348,7 @@ set(telepathy_qt_HEADERS
     GenericPropertyFilter
     generic-property-filter.h
     Global
-    global.h
+    ${CMAKE_CURRENT_BINARY_DIR}/global.h
     HandledChannelNotifier
     handled-channel-notifier.h
     IncomingDBusTubeChannel
diff --git a/TelepathyQt/global.h b/TelepathyQt/global.h.in
similarity index 87%
rename from TelepathyQt/global.h
rename to TelepathyQt/global.h.in
index abb1c54..6b8ec44 100644
--- a/TelepathyQt/global.h
+++ b/TelepathyQt/global.h.in
@@ -29,6 +29,26 @@
 
 #include <QtGlobal>
 
+#define TP_QT_MAJOR_VERSION @TP_QT_MAJOR_VERSION@
+#define TP_QT_MINOR_VERSION @TP_QT_MINOR_VERSION@
+#define TP_QT_MICRO_VERSION @TP_QT_MICRO_VERSION@
+#define TP_QT_VERSION ((TP_QT_MAJOR_VERSION<<16)|(TP_QT_MINOR_VERSION<<8)|(TP_QT_MICRO_VERSION))
+
+/**
+ * @def TP_QT_VERSION_CHECK
+ * @ingroup macros
+ *
+ * The TP_QT_VERSION_CHECK macro can be used to do condition compilation
+ * in TelepathyQt-based applications and libraries.
+ *
+ * \code
+ * #if (TP_QT_VERSION >= TP_QT_VERSION_CHECK(0, 9, 6))
+ *     Tp::BaseConnectionAvatarsInterfacePtr avatarsIface;
+ * #endif
+ * \endcode
+ */
+#define TP_QT_VERSION_CHECK(major, minor, patch) ((major<<16)|(minor<<8)|(patch))
+
 #ifdef BUILDING_TP_QT
 #  define TP_QT_EXPORT Q_DECL_EXPORT
 #else