Subject: Re: [boost] Clang 3.4 failing to compile boost 1.57 headers
From: Marc Glisse (marc.glisse_at_[hidden])
Date: 2015-01-18 18:51:57
On Sun, 18 Jan 2015, John Maddock wrote:
>>> Results are as follows for clang 3.5
>>>
>>> gcc version gcc reports clang reports
>>> 4.6.3 40603 40700
>>> 4.8.2 40802 40800
>>> 4.9.0 40900 40900
>>> 4.9.2 40902 40900
>>> 5.0.0 50000 40700
>>>
>>> I can see that there are some serious problems getting the correct
>>> identification with Clang.
>>
>> Looks like unless it recognizes 4.8 or 4.9, it reports 40700 by default,
>> which would make things a bit complicated.
>
> No it checks for C++11 headers introduced with specific GCC versions - if the
> header is found (via clang __has_include) then the compiler version is
> assumed to be later than the GCC version that first introduced that header.
>
> So... 4.6.3 reporting 4.7 implies that <chrono> is present?
4.6.4 has <chrono> for me (even 4.4.7 has it), so I guess you should check
another header instead (sorry, I don't have 4.5 so I can't easily suggest
one).
-- Marc Glisse