dnl Enable -Wl,--as-needed by default to prevent overlinking

AC_ARG_ENABLE([as-needed],
  AC_HELP_STRING([--disable-as-needed],
  [Disable overlinking protection]),
  [enable_as_needed=$enableval], [enable_as_needed=yes])

if test "x$enable_as_needed" != "xno"; then
  AC_MSG_CHECKING([whether $LD accepts --as-needed])
  case `$LD --as-needed -v 2>&1 </dev/null` in
  *GNU* | *'with BFD'*)
    LDFLAGS="$LDFLAGS -Wl,--as-needed"
    AC_MSG_RESULT([yes])
    ;;
  *)
    AC_MSG_RESULT([no])
    ;;
  esac
fi