Hi Peter, > Is there any tool, switches to cpp or a relatively simple way to alter > cpp sources so I can get a dump of #defined macros? I use this trick: You can generate a list of the built in defines by doing this: echo '' | gcc -E -dM -x c - | sort echo '' -- for our mock empty source file gcc -- our favorite toolchain driver (or g++) -E -- preprocess only -dM -- display defines -x c -- treat as C (or -x C++) - -- use stdin as the source file sort -- put the defines in more human readable order You can use that trick with particular #include files to see what the vestigial #defines are (vestigial because it won't list #undef'd identifiers). You can do the same thing for, say, Foo.c by doing this: gcc -E -dM -x c Foo.c | sort Using some shell magic, you can eliminate the "empty source" pre-defines from the remainder of what's introduced (and not #undef'd) in Foo.c. If you are using C++, use g++ and -x c++. HTH, --Eljay
