Does anyone know a way to define C preprocessor comments at the command line for A51? For example, in C I would do something like: C51 foo.c DEFINE(SOME_CONST) but the "DEFINE" directive does not work in A51. In addition, the C preprocessor in A51 does not recognize constants declared with the "SET" directive as C defined constants. In other words, if I do: A51 foo.a51 SET(SOME_CONST=1) and then I have the following line in my assembly file: #ifdef SOME_CONST the expression will be interpreted as being false. Thanks!