*
* FIXME: I am not sure if "mu" should be possible to select (Lgb)
*/
-extern char const * unit_name[];
-extern char const * unit_name_gui[];
-extern char const * unit_name_ltx[];
+extern char const * const unit_name[];
+extern char const * const unit_name_gui[];
+extern char const * const unit_name_ltx[];
/// return the unit given a string representation such as "cm"
LyXLength::UNIT unitFromString(std::string const & data);