+AC_MSG_CHECKING([for kernel type ($host_os)])
+case $host_os in
+ *linux*)
+ AC_DEFINE([KERNEL_LINUX], 1, [True if program is to be compiled for a Linux kernel])
+ ac_system="Linux"
+ ;;
+ *solaris*)
+ AC_DEFINE([KERNEL_SOLARIS], 1, [True if program is to be compiled for a Solaris kernel])
+ ac_system="Solaris"
+ ;;
+ *darwin*)
+ ac_system="Darwin"
+ ;;
+ *)
+ ac_system="unknown"
+esac
+AC_MSG_RESULT([$ac_system])
+