Re: [Boost-build] Cannot build boost 1.63 with Windows Intel compiler because cpu_relax

Subject: Re: [Boost-build] Cannot build boost 1.63 with Windows Intel compiler because cpu_relax
From: Edward Diener (eldiener_at_[hidden])
Date: 2017-03-09 21:30:50

On 3/9/2017 2:17 PM, Blower, Melanie via Boost-build wrote:
> Hello,
> I'm trying to build the boost 1.63 library with the Intel 17.0 compiler (latest update) in the vs2015 environment. Several targets fail to build because the definition of the cpu_relax macro isn't correct.
>
> This change corrects the problem and allows the build to complete successfully.  Is this the right way to correct the problem?

First you should put [fiber] at the beginning of the title to your message.

Secondly it is better to createa PR against the fiber library on Github.

>
> diff _unchanged/boost_1_63_0/boost/fiber/detail/cpu_relax.hpp boost_1_63_0/boost/fiber/detail/cpu_relax.hpp
> 17c17
> < #if BOOST_COMP_MSVC
> ---
>> # if BOOST_COMP_MSVC || BOOST_COMP_MSVC_EMULATED
> 40c40
> < # if BOOST_COMP_MSVC
> ---
>> # if BOOST_COMP_MSVC || BOOST_COMP_MSVC_EMULATED
>
> Without this change I get a message like this:
>
> ./boost/fiber/detail/spinlock_ttas.hpp(66): error: invalid constant in assembly language instruction
>                       asm volatile ("pause" ::: "memory");;
>                                     ^
>
> This change allows the macro to compile to YieldProcessor()
>
> I work for Intel, on the Intel C++ compiler.
>
> Thanks and regards, Melanie Blower