diff --git a/CMakeLists.txt b/CMakeLists.txt
index aad25fde..abc41edd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,6 +26,8 @@ include( FindPkgConfig )
 include( CheckIncludeFile )
 include( CheckIncludeFileCXX )
 include( CheckCXXSourceCompiles )
+include( CheckSymbolExists )
+
 
 ##### include our cmake modules #################
 
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 133d7d7a..28079e4c 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -9,17 +9,23 @@
 #
 #################################################
 
+# required stuff
+
+tde_setup_architecture_flags( )
+
+include(TestBigEndian)
+test_big_endian(WORDS_BIGENDIAN)
+
+tde_setup_largefiles( )
+
+find_package( TQt )
+find_package( TDE )
+
+
 ##### check for gcc visibility support #########
-# FIXME
-# This should check for [T]Qt3 visibility support
 
 if( WITH_GCC_VISIBILITY )
-  if( NOT UNIX )
-    tde_message_fatal(FATAL_ERROR "\ngcc visibility support was requested, but your system is not *NIX" )
-  endif( NOT UNIX )
-  set( __KDE_HAVE_GCC_VISIBILITY 1 )
-  set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden -fvisibility-inlines-hidden")
-  set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden -fvisibility-inlines-hidden")
+  tde_setup_gcc_visibility( )
 endif( )
 
 
@@ -89,7 +95,3 @@ if( BUILD_TDESCREENSAVER )
     endif( )
   endif( WITH_XSCREENSAVER )
 endif( BUILD_TDESCREENSAVER )
-
-# required stuff
-find_package( TQt )
-find_package( TDE )