*) AC_MSG_ERROR("--with-context must be either ucontext or pthread") ;;
esac
+USE_CONTEXT=no
if test "x$with_context" = "xucontext" ; then
if test ".$mcsc" = .yes; then
AC_MSG_RESULT(found working ucontext. Great!)
AC_DEFINE([USE_UCONTEXT],1,[Define if we use ucontext or not])
+ USE_CONTEXT=yes
else
if test ".$windows_context" = .yes ; then
AC_MSG_RESULT(use windows context portability layer.)
fi
fi
fi
+AC_SUBST(USE_CONTEXT)
if test "x$with_context" = "xpthread"; then
AC_CHECK_HEADERS([pthread.h])