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dnl
dnl Subshell support.
dnl
AC_DEFUN([mc_SUBSHELL], [
AC_MSG_CHECKING([for subshell support])
AC_ARG_WITH(subshell,
[ --with-subshell Compile in concurrent subshell @<:@yes@:>@
--with-subshell=optional Don't run concurrent shell by default @<:@no@:>@],
[
case "x$withval" in
xyes)
result="yes"
;;
xoptional)
result="optional"
;;
*)
result="no"
;;
esac
],
[
dnl Default: enable the subshell support
result="yes"
])
AC_MSG_RESULT([$result])
if test "x$result" != xno; then
AC_DEFINE(ENABLE_SUBSHELL, 1, [Define to enable subshell support])
dnl openpty() can simplify opening of master/slave devices for subshell
AC_CHECK_HEADERS([pty.h libutil.h util.h])
AC_CHECK_FUNCS(openpty,,
AC_CHECK_LIB(util,openpty,
[AC_DEFINE(HAVE_OPENPTY)
LIBS="$LIBS -lutil"]
)
)
if test "x$result" = xoptional; then
AC_DEFINE(SUBSHELL_OPTIONAL, 1, [Define to make subshell support optional])
fi
fi
subshell="$result"
AM_CONDITIONAL(ENABLE_SUBSHELL, [test "x$result" != xno])
])
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