Dear Simon,
In message CAPnjgZ2a+qrsPWTz5Y=48m_LCRqAikY0-seJudW8AY5asdwmxw@mail.gmail.com 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...
Stephen suggested a slightly more extreme version too - I was worried that all the typing stuff in U-Boot headers would break in this case, but I didn't actually test it, so perhaps it is fine.
Yes, I've seen it. I think either approach is better that manually undef-ing specific variables. From my personal point of view I think the -undef approach is a bit of overkill, but I would not protest.
Best regards,
Wolfgang Denk