Use POSITION_INDEPENDENT_CODE property for CMake >= 2.8.9.

This resolves bug 2985.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

modules/TDEMacros.cmake

@@ -773,7 +773,11 @@ macro( tde_add_library _arg_target )
 
   # set -fPIC flag for static libraries
   if( _static_pic )
-    set_target_properties( ${_target} PROPERTIES COMPILE_FLAGS -fPIC )
+    if( "${CMAKE_VERSION}" VERSION_LESS "2.8.9" )
+      set_target_properties( ${_target} PROPERTIES COMPILE_FLAGS -fPIC )
+    else( )
+      set_target_properties( ${_target} PROPERTIES POSITION_INDEPENDENT_CODE ON )
+    endif( )
   endif( _static_pic )
 
   # set version