WX_ARG_ENABLE(optimise, [ --enable-optimise create optimised code], wxUSE_OPTIMISE)
WX_ARG_ENABLE(debug, [ --enable-debug same as debug_flag and debug_info], wxUSE_DEBUG)
WX_ARG_ENABLE(stl, [ --enable-stl use STL for containers], wxUSE_STL)
-WX_ARG_ENABLE(omf, [ --enable-omf use OMF object format on OS/2], wxUSE_OMF)
+if test "$USE_OS2" = "1"; then
+ WX_ARG_ENABLE(omf, [ --enable-omf use OMF object format], wxUSE_OMF)
+fi
if test "$wxUSE_DEBUG" = "yes"; then
DEFAULT_wxUSE_DEBUG_FLAG=yes