--- Cgl/configure
+++ Cgl/configure
@@ -3501,8 +3501,6 @@
 fi
 for ac_declaration in \
    '' \
-   'extern "C" void std::exit (int) throw (); using std::exit;' \
-   'extern "C" void std::exit (int); using std::exit;' \
    'extern "C" void exit (int) throw ();' \
    'extern "C" void exit (int);' \
    'void exit (int);'