diff --git a/CMakeLists.txt b/CMakeLists.txt
index 89d00a74..852ac4a5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -27,6 +27,7 @@ include( CheckTypeSize )
 include( CheckCSourceCompiles )
 include( CheckCXXSourceCompiles )
 include( CheckLibraryExists )
+include( CheckSymbolExists )
 
 
 ##### include our cmake modules #################
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index 6789c4c0..7fe40e2c 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -14,17 +14,13 @@ tde_setup_architecture_flags( )
 include(TestBigEndian)
 test_big_endian(WORDS_BIGENDIAN)
 
+tde_setup_largefiles( )
+
+
 ##### 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( )