Add tinyxml2 to project

CMakeLists.txt

@@ -70,6 +70,7 @@ option(WXFB_WXWIDGETS_MONO "Use monolithic variant of wxWidgets." ${wxWidgetsMon
 unset(wxWidgetsMonoDefault)
 option(WXFB_WXWIDGETS_ENABLE_30 "Allow using wxWidgets version 3.0.x. Not recommended, only for platforms without wxWidgets version 3.1.x." OFF)
 option(WXFB_TICPP_SHARED "Use shared variant of TiCPP." OFF)
+option(WXFB_TINYXML2_SHARED "Use shared variant of TinyXML-2." OFF)
 option(WXFB_BUILD_PLUGIN_HOST "Build as plugin host. Disables build steps that must be performed by the toplevel project." OFF)
 if(PROJECT_IS_TOP_LEVEL OR WXFB_BUILD_PLUGIN_HOST)
   set(stageBuildDefault ON)
@@ -204,6 +205,9 @@ add_subdirectory(third_party/stack_trace)
 stash_variable(BUILD_SHARED_LIBS VALUE ${WXFB_TICPP_SHARED})
 add_subdirectory(third_party/ticpp)
 restore_variable(BUILD_SHARED_LIBS)
+stash_variable(BUILD_SHARED_LIBS ${WXFB_TINYXML2_SHARED})
+add_subdirectory(third_party/tinyxml2)
+restore_variable(BUILD_SHARED_LIBS)
 
 if(NOT WXFB_BUILD_PLUGIN_HOST)
   wxfb_configure_postbuild()