diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a0184166..84ceb566d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -243,11 +243,23 @@ if( HAVE_SYS_TIME_H AND HAVE_TIME_H )
 endif( HAVE_SYS_TIME_H AND HAVE_TIME_H )
 
 if( HAVE_SYS_ACL_H )
-  set( USE_POSIX_ACL 1 )
+  check_include_file( "acl/libacl.h" HAVE_ACL_LIBACL_H )
+  if( HAVE_ACL_LIBACL_H )
+    check_library_exists( acl acl_init "" HAVE_ACL_INIT )
+    if( HAVE_ACL_INIT AND HAVE_SYS_XATTR_H )
+      set( USE_POSIX_ACL 1 )
+      set( HAVE_NON_POSIX_ACL_EXTENSIONS 1 )
+      set( ACL_LIBRARIES acl attr )
+    endif( HAVE_ACL_INIT AND HAVE_SYS_XATTR_H )
+  else( HAVE_ACL_LIBACL_H )
+    check_library_exists( c acl_init "" HAVE_ACL_INIT )
+    if( HAVE_ACL_INIT )
+      set( USE_POSIX_ACL 1 )
+      set( ACL_LIBRARIES c )
+    endif( HAVE_ACL_INIT )
+  endif( HAVE_ACL_LIBACL_H )
 endif( HAVE_SYS_ACL_H )
 
-check_include_file( "acl/libacl.h" HAVE_NON_POSIX_ACL_EXTENSIONS )
-
 check_include_file( "valgrind/memcheck.h" HAVE_VALGRIND_MEMCHECK_H )
 check_include_file( "values.h" HAVE_VALUES_H )
 check_include_file( "X11/extensions/shape.h" HAVE_X11_EXTENSIONS_SHAPE_H )
diff --git a/tdeio/CMakeLists.txt b/tdeio/CMakeLists.txt
index 5fa0ded6d..c561e8294 100644
--- a/tdeio/CMakeLists.txt
+++ b/tdeio/CMakeLists.txt
@@ -55,10 +55,6 @@ if( HAVE_ELFICON )
   set( ELFICON_STATIC_LIB tdelficon-static )
 endif( HAVE_ELFICON )
 
-if( HAVE_NON_POSIX_ACL_EXTENSIONS )
-  set( ACL_LIBRARIES acl )
-endif( HAVE_NON_POSIX_ACL_EXTENSIONS )
-
 
 ##### libtdeio ####################################
 
diff --git a/tdeio/tdeio/CMakeLists.txt b/tdeio/tdeio/CMakeLists.txt
index b4487db7f..77e122725 100644
--- a/tdeio/tdeio/CMakeLists.txt
+++ b/tdeio/tdeio/CMakeLists.txt
@@ -49,10 +49,9 @@ install( FILES
     kremoteencoding.h kmimetypechooser.h
   DESTINATION ${INCLUDE_INSTALL_DIR} )
 
-# FIXME seems that ACL is no longer optional
-#if( USE_POSIX_ACL )
+if( USE_POSIX_ACL )
   install( FILES kacl.h DESTINATION ${INCLUDE_INSTALL_DIR} )
-#endif( USE_POSIX_ACL )
+endif( USE_POSIX_ACL )
 
 install( FILES
     connection.h slaveinterface.h slave.h slaveconfig.h
@@ -111,10 +110,9 @@ set( ${target}_SRCS
   dataprotocol.cpp
 )
 
-# FIXME seems that ACL is no longer optional
-#if( USE_POSIX_ACL )
+if( USE_POSIX_ACL )
   set( ${target}_SRCS ${${target}_SRCS} kacl.cpp posixacladdons.cpp )
-#endif( USE_POSIX_ACL )
+endif( USE_POSIX_ACL )
 
 tde_add_library( ${target} STATIC_PIC AUTOMOC
   SOURCES ${${target}_SRCS}
diff --git a/tdeio/tdeio/posixacladdons.cpp b/tdeio/tdeio/posixacladdons.cpp
index bae51592b..873f1a81e 100644
--- a/tdeio/tdeio/posixacladdons.cpp
+++ b/tdeio/tdeio/posixacladdons.cpp
@@ -21,6 +21,8 @@
 
 #if defined(USE_POSIX_ACL) && !defined(HAVE_NON_POSIX_ACL_EXTENSIONS)
 
+#include <kdemacros.h>
+
 #include <errno.h>
 #include <sys/stat.h>
 
@@ -61,7 +63,7 @@ protected:
     }
 };
 
-int acl_cmp(acl_t acl1, acl_t acl2)
+KDE_EXPORT int acl_cmp(acl_t acl1, acl_t acl2)
 {
     if ( !acl1 || !acl2 )
         return -1;
@@ -127,7 +129,7 @@ int acl_cmp(acl_t acl1, acl_t acl2)
     return 0;
 }
 
-acl_t acl_from_mode(mode_t mode)
+KDE_EXPORT acl_t acl_from_mode(mode_t mode)
 {
     acl_t newACL = acl_init( 3 );
     acl_entry_t entry;
@@ -178,7 +180,7 @@ acl_t acl_from_mode(mode_t mode)
     return newACL;
 }
 
-int acl_equiv_mode(acl_t acl, mode_t *mode_p)
+KDE_EXPORT int acl_equiv_mode(acl_t acl, mode_t *mode_p)
 {
     acl_entry_t entry;
     acl_tag_t tag;