+dnl handle --disable-backtrace
+dnl
+AH_TEMPLATE([DISABLE_BACKTRACE], [Define to 1 to disable use of backtrace])
+AC_ARG_ENABLE([backtrace],
+[ --disable-backtrace disable use backtrace],
+if test "$enableval" = "no"
+then
+ AC_MSG_RESULT([Disabling use of backtrace])
+ AC_DEFINE(DISABLE_BACKTRACE, 1)
+else
+ AC_MSG_RESULT([Enabling use of backtrace])
+fi
+,
+AC_MSG_RESULT([Enabling use of backtrace by default])
+)
+dnl