Re: [boost] Re: Compiler errors with Intel 7.1 and type_traits

From: Peter Dimov (pdimov_at_[hidden])
Date: 2003-10-08 06:47:02

David Abrahams wrote:
> "Stefan Slapeta" <stefan_at_[hidden]> writes:
>
>> "John Maddock" <john_at_[hidden]> wrote:
>>
>>> As Dave has already said, there is no way for us to detect which
>>> compiler options the Intel compiler is using, and therefore what
>>> options it supports.
>>
>> What exactly is wrong with
>>
>> #if (defined(_MSC_VER) && _MSV_VER <= 1200) ||
>>   BOOST_INTEL_CXX_VERSION < 700 #define BOOST_NO_INTRINSIC_WCHAR_T
>> #endif
>>
>> (like it was before) in intel.hpp??
>
> I'm not sure, but I'm unwilling to believe that it works until it has
> been tested with all combinations of intel compilers, MS compiler
> compatibility, dinkumware libs, and command-line/IDE integration.

It works most of the time, and the alternatives do not.

The proper way to do it is to support both BOOST_HAS_INTRINSIC_WCHAR_T and
BOOST_NO_INTRINSIC_WCHAR_T as input, and fall back on autodetection when
neither is defined at toolset level.