diff --git a/CMakeLists.txt b/CMakeLists.txt
index fe129f6..275765a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,9 +18,20 @@ cmake_minimum_required( VERSION 2.8 )
 
 include( FindPkgConfig )
 include( CheckCXXSourceCompiles )
+include( CheckSymbolExists )
 
 set( CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules" )
 include( TDEMacros )
+
+
+##### optional stuff
+
+option( WITH_ALL_OPTIONS "Enable all optional support" OFF )
+option( WITH_GCC_VISIBILITY "Enable fvisibility and fvisibility-inlines-hidden" ${WITH_ALL_OPTIONS} )
+
+
+##### configure checks ##########################
+
 include( ConfigureChecks.cmake )
 
 
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 951e55f..f155fe2 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -9,6 +9,16 @@
 #
 #################################################
 
+##### setup architecture flags ##################
+
+tde_setup_architecture_flags( )
+
+include(TestBigEndian)
+test_big_endian(WORDS_BIGENDIAN)
+
+tde_setup_largefiles( )
+
+
 # dbus-1
 pkg_search_module( DBUS dbus-1 )
 if( NOT DBUS_FOUND )
@@ -17,3 +27,8 @@ endif( )
 
 # tqt
 find_package( TQt )
+
+# gcc visibility
+if( WITH_GCC_VISIBILITY )
+  tde_setup_gcc_visibility( )
+endif( )