Acorn C / C++ Compiler question.

Switched to C and the DDE for further developing BRIX (mock-up was on display on my stand back in Bristol.) Planning to make it multiplatform. What I need to know is whether the Norcroft Compiler has a global #define that would enable me to conditionally select and compile in the the RISC OS platform specific if it was defined?

Yep. I think it’s #ifdef __RISCOS__ but don’t quote me on that!

Close – I believe the preferred one is __riscos__ (there are a few different #defines, and probably some variance between GCC & Norcroft, but I’m fairly certain __riscos__ is the “standard” one and works with both)

OK… Nailed it with those suggestions, it’s __riscos
at least, that’s what works with the latest DDE without throwing compiler errors.

Yeah, it looks like the DDE only has __riscos, __acorn and __arm as builtin defines for identifying the platform (or at least that’s what turned up in a quick search through the compiler binary)

Meanwhile GCC defines __riscos, __riscos__ and __arm__. Older versions did define __arm, but newer versions don’t (and it looks like ARM’s current compiler has gone with only __arm__ as well)