Add Qt and XCB compile version to supportInformation

Add QT_VERSION_STR in addition to qVersion(). This could be useful
to see whether the runtime version is different to the Qt version
used at compile time.

Also adds the XCB_VERSION_STRING which is used at compile time.
This is useful as for example XCB::SYNC was broken prior to 1.10.

REVIEW: 122375

config-kwin.h.cmake

@@ -7,6 +7,7 @@
 #define KWIN_INTERNAL_NAME_X11 "${KWIN_INTERNAL_NAME_X11}"
 #define KWIN_CONFIG "${KWIN_NAME}rc"
 #define KWIN_VERSION_STRING "${PROJECT_VERSION}"
+#define XCB_VERSION_STRING "${XCB_VERSION}"
 #define KWIN_KILLER_BIN "${CMAKE_INSTALL_PREFIX}/${LIBEXEC_INSTALL_DIR}/kwin_killer_helper"
 #cmakedefine01 HAVE_WAYLAND
 #cmakedefine01 HAVE_WAYLAND_EGL

workspace.cpp

@@ -1331,7 +1331,9 @@ QString Workspace::supportInformation() const
     support.append(QStringLiteral("\n"));
     support.append(QStringLiteral("Qt Version: "));
     support.append(QString::fromUtf8(qVersion()));
-    support.append(QStringLiteral("\n\n"));
+    support.append(QStringLiteral("\n"));
+    support.append(QStringLiteral("Qt compile version: %1\n").arg(QStringLiteral(QT_VERSION_STR)));
+    support.append(QStringLiteral("XCB compile version: %1\n\n").arg(QStringLiteral(XCB_VERSION_STRING)));
     support.append(QStringLiteral("Operation Mode: "));
     switch (kwinApp()->operationMode()) {
     case Application::OperationModeX11: