Don't forget to add the FindMir.cmake.

CMake/modules/FindMir.cmake

@@ -0,0 +1,18 @@
+# Try to find Mir on a Unix system
+#
+# This will define:
+#
+#   MIR_LIBRARIES   - Link these to use Wayland
+#   MIR_INCLUDE_DIR - Include directory for Wayland
+#
+# Copyright (c) 2014 Brandon Schaefer <brandon.schaefer@canonical.com>
+
+if (NOT WIN32)
+
+  find_package (PkgConfig)
+  pkg_check_modules (PKG_MIR QUIET mirclient)
+
+  set (MIR_INCLUDE_DIR ${PKG_MIR_INCLUDE_DIRS})
+  set (MIR_LIBRARIES   ${PKG_MIR_LIBRARIES})
+
+endif ()