Author: Gert Wollny <gewo@debian.org>
Description: explicitly link against libatomic

--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -81,7 +81,7 @@
 else()
   set(maybe_PRIVATE "")
 endif()
-target_link_libraries(castxml ${maybe_PRIVATE} ${clang_libs})
+target_link_libraries(castxml ${maybe_PRIVATE} ${clang_libs} atomic)
 
 set_property(SOURCE Utils.cxx APPEND PROPERTY COMPILE_DEFINITIONS
   "CASTXML_INSTALL_DATA_DIR=\"${CastXML_INSTALL_DATA_DIR}\"")