Am 31.07.2013 15:29, schrieb Peter Meerwald: >> It looks like some headers define both _BIG_ENDIAN and _LITTLE_ENDIAN >> (perhaps one is defined as "1" and the other as "0"?), so maybe a >> >> #if defined(_BIG_ENDIAN) && !defined(_LITTLE_ENDIAN) > boost (boost/detail/endian.hpp) does it like this > > p. > My system (debian jessy) defines both in endian.h (except it has two underscores), and __BYTE_ORDER is defined to the appropriate value. So the check on my system would be #if __BYTE_ORDER == __BIG_ENDIAN ... #endif