id summary reporter owner description type status milestone component version severity resolution keywords cc 9663 ARM compilation in MSVC 13.0 firemat@… René Rivera "Looks like endiannes support in predef library, when comparing to previous solution in boost/detail/endian.hpp lacks some conditions for architecture predefined compilation flags in MSVC. Due to that I have compilation errors in fp_traits.hpp since endiannes cannot be determined. \packages\boost.1.55.0.16\lib\native\include\boost/math/special_functions/detail/fp_traits.hpp(472): error C2338: false \packages\boost.1.55.0.16\lib\native\include\boost/math/special_functions/detail/fp_traits.hpp(457): error C2065: 'offset_' : undeclared identifier \boost.1.55.0.16\lib\native\include\boost/math/special_functions/detail/fp_traits.hpp(462): error C2065: 'offset_' : undeclared identifier I have two proposition for fixing this issue. First is to add _M_ARM flag in predef/architecture/arm.h and second is to add _LITTLE_ENDIAN flag in predef/other/endian.h " Bugs closed To Be Determined predef USE GITHUB Boost 1.55.0 Problem fixed