mc/m4.include/mc-subshell.m4

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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@:>@],
[
result=no
if test x$withval = xoptional; then
AC_DEFINE(SUBSHELL_OPTIONAL, 1, [Define to make subshell support optional])
result="optional"
fi
if test x$withval = xyes; then
result="yes"
fi
],
[
dnl Default: enable the subshell support
result="yes"
])
if test "x$result" != xno; then
AC_DEFINE(ENABLE_SUBSHELL, 1, [Define to enable subshell support])
fi
AC_MSG_RESULT([$result])
subshell="$result"
AM_CONDITIONAL(ENABLE_SUBSHELL, [test "x$result" != xno])
])