+AC_ARG_ENABLE(ucsim,[ --disable-ucsim Disables configuring and building of ucsim])
+OPT_ENABLE_UCSIM=$enable_ucsim
+AC_SUBST(OPT_ENABLE_UCSIM)
+
+AC_ARG_ENABLE(device-lib-build,[ --disable-device-lib-build Disables automatically building device libraries])
+OPT_ENABLE_DEVICE_LIB_BUILD=$enable_device_lib_build
+AC_SUBST(OPT_ENABLE_DEVICE_LIB_BUILD)
+
+AC_ARG_ENABLE(packihx,[ -disable-packihx Disables building packihx])
+OPT_ENABLE_PACKIHX=$enable_packihx
+AC_SUBST(OPT_ENABLE_PACKIHX)
+