diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5399d6..d224113 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,7 @@ cmake_minimum_required( VERSION 2.8 )
 
 include( CheckCXXSourceCompiles )
 include( CheckFunctionExists )
+include( CheckSymbolExists )
 include( CheckIncludeFile )
 include( CheckLibraryExists )
 include( FindPkgConfig )
@@ -65,6 +66,8 @@ tde_setup_architecture_flags( )
 include(TestBigEndian)
 test_big_endian(WORDS_BIGENDIAN)
 
+tde_setup_largefiles( )
+
 
 ##### check for include files ###################
 
@@ -219,23 +222,16 @@ else( GLIB2_FOUND )
 endif( GLIB2_FOUND )
 
 
-##### check for gcc visibility support #########
-# FIXME
-# This should check for [T]Qt3 visibility support
+##### check for TQt #############################
 
-if( WITH_GCC_VISIBILITY )
- if( NOT UNIX )
- message(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")
-endif( )
+find_package( TQt )
 
 
-##### check for TQt #############################
+##### check for gcc visibility support #########
 
-find_package( TQt )
+if( WITH_GCC_VISIBILITY )
+  tde_setup_gcc_visibility( )
+endif( )
 
 
 ##### write config.h file #######################