++
++# Do we have /proc/sys/kernel/shmmax?
++AC_MSG_CHECKING([path to shmmax file in procfs])
++if test -e "/proc/sys/kernel/shmmax"; then
++ PROC_SHMMAX_PATH="/proc/sys/kernel/shmmax"
++ AC_MSG_RESULT([$PROC_SHMMAX_PATH])
++ AC_DEFINE([PROC_SHMMAX_PATH], ["$PROC_SHMMAX_PATH"],
++ [Define to the path to shmmax file in procfs if any.])
++else
++ AC_MSG_RESULT([none])
++fi