Dear Stephen,
In message 51A634B5.5060309@wwwdotorg.org you wrote:
I think this is not a good way to address this issue. The GCC documentation (section "System-specific Predefined Macros" [1]) desribes how this should be handled. The "correct" (TM) way to fix this is by adding "-ansi" or any "-std" option that requests strict conformance to the compiler/preprocessor command line.
[1] http://gcc.gnu.org/onlinedocs/cpp/System_002dspecific-Predefined-Macros.html...
-ansi at least was considered when the Linux kernel patches for dtc+cpp support were being developed, but it was rejected. While it possibly
Can you provide references? I'd like to understand why it was rejected - it seems to be the "official" approach to the problem.
does solve this specific issue fine, there were other more general problems; IIRC (and I might not) it completely changes the way macro expansion happens, which results in it being pretty useless. Hence, "-x assembler-with-cpp" was chosen over e.g. "-ansi".
Again, do you have any reference? "completely changes the way macro expansion happens" sounds terribly dangerous, so it would be better to know about that exactly...
Best regards,
Wolfgang Denk