+AC_ARG_ENABLE(uml,
+ AS_HELP_STRING([--enable-uml], [enable support for User Mode Linux]),
+ [ AC_DEFINE(ENABLE_UML, 1, [Support for UML])
+ uml=true
+ ]
+)
+
+AC_ARG_ENABLE(vde,
+ AS_HELP_STRING([--enable-vde], [enable support for Virtual Distributed Ethernet]),
+ [ AC_CHECK_HEADERS(libvdeplug_dyn.h, [], [AC_MSG_ERROR([VDE plug header files not found.]); break])
+ AC_DEFINE(ENABLE_VDE, 1, [Support for VDE])
+ vde=true
+ ]
+)
+
+AC_ARG_ENABLE(tunemu,
+ AS_HELP_STRING([--enable-tunemu], [enable support for the tunemu driver]),
+ [ AC_DEFINE(ENABLE_TUNEMU, 1, [Support for tunemu])
+ tunemu=true
+ ]
+)
+
+AC_ARG_WITH(windows2000,
+ AS_HELP_STRING([--with-windows2000], [compile with support for Windows 2000. This disables support for tunneling over existing IPv6 networks.]),
+ [AC_DEFINE(WITH_WINDOWS2000, 1, [Compile with support for Windows 2000])]
+)
+
+AM_CONDITIONAL(UML, test "$uml" = true)
+AM_CONDITIONAL(VDE, test "$vde" = true)
+AM_CONDITIONAL(TUNEMU, test "$tunemu" = true)
+