On 6/14/09 10:05 PM, Michael Wild said: >On Mac OS X one shouldn't do this kind of detection during configure >step, because as has been mentioned a single file can be compiled >multiple times for different architectures during one single compiler >invocation. The size of void* and even endianness can change. It is >preferable to have a central config.h.in (or similar) containing >something like this: > >#if defined(__APPLE__) ># if defined(__i386__) ># undef HAVE_64_BIT ># undef HAVE_BIG_ENDIAN ># elif defined(__ppc__) ># undef HAVE_64_BIT ># define HAVE_BIG_ENDIAN ># elif defined(__x86_64__) ># define HAVE_64_BIT ># undef HAVE_BIG_ENDIAN ># elif defined(__ppc64__) ># define HAVE_64_BIT ># define HAVE_BIG_ENDIAN ># else > // oops ># error "Unknown architecture!" ># endif >#else ># cmakedefine HAVE_64_BIT ># cmakedefine HAVE_BIG_ENDIAN >#endif
I agree with Hendrik that such things are better done with types like uin32_t, etc. The quoted stuff above will fail with OS X running on ARM (ie iPhone). -- ____________________________________________________________ Sean McBride, B. Eng s...@rogue-research.com Rogue Research www.rogue-research.com Mac Software Developer Montréal, Québec, Canada _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
