We have upgraded aCC, now what?
If you have been using an old version of aCC then nmake must re-probe the compiler to learn it supports -I-. Once this is done the compiles will no longer use nmake cpp. Find your current probe files. The following commands will show you the paths to your probe files: $ probe -k C make aCC $ probe -k C pp aCC Backup your current probe files just to be safe. Move the files found above to a new filename, like *.old. Move the files, do not copy them; the original filenames need to be gone for the probing to take place. Probe the new compiler using the following commands (these may take several minutes): $ probe C make aCC $ probe C pp aCC Now if you look at the new make probe file you should see -I- listed with CC.DIALECT. This indicates the compiler has native support for -I-.
