[OE-core] [PATCH 8/8] boost: Fix build on soft-float ABI arm systems

[Khem Raj]

On Wed, Feb 3, 2016 at 12:42 PM, Phil Blundell <pb at pbcl.net> wrote:
> On Mon, 2016-02-01 at 05:08 +0000, Khem Raj wrote:
>> +     BOOST_FPE_ALL       = MCW_EM,
>> +-#elif defined(BOOST_NO_FENV_H) || defined(BOOST_CLANG)
>> ++#elif defined(BOOST_NO_FENV_H) || defined(BOOST_CLANG) \
>> ++    || defined(__ARM_PCS)
>> +     BOOST_FPE_ALL       = 1,
>
> This looks a bit bogus.  Whether or not a particular fesetenv() flag is
> available is, or should be, orthogonal to the question of whether you
> are using the soft-float or hard-float ABI.

it should be

  I think it might be true
> that some libraries don't implement fesetenv() when using softfp (i.e.
> no VFP instructions at all) but that is not necessarily the same thing
> as the soft float ABI.

does glibc implement it correctly using soft-fp ? my tests failed for
glibc thats why
I used the VFP detection logic

  What was the exact situation where you had a
> problem with this?

using musl.

>
> Anyway, if what you want to test is the availability of FE_DIVBYZERO,
> you can just use "#ifdef FE_DIVBYZERO" since FE_* are required to be
> macros.

I think that could be a better solution, atleast glibc can keep doing
whatever it was doing before.