On 2/25/19 2:29 PM, Guy Harris wrote:
> On Feb 25, 2019, at 2:02 PM, Gerald Combs <gerald@xxxxxxxxxxxxx> wrote:
>
>> It looks like we need to build GMP for older CPUs.
>>
>> According to your last crash report, you're running a Core i7-3720QM and crashed in mpn_submul_1. GMP's "Build Options" documentation at https://gmplib.org/manual/Build-Options.html says that it can be optimized for a number of CPUs, and that its configure script defaults to "this CPU here, right here in my office". For the macOS builder that's a Core i7-8700B
>
> ...and for the old builder it was probably something less shiny and new.
>
>> The "Notes for Package Builds" section of the documentation recommends "--enable-fat" when shipping binary packages, which builds a range of optimized code and chooses the fastest at run time: https://gmplib.org/manual/Notes-for-Package-Builds.html
>
> If that works, I'd go for that.
>
>> Homebrew defines an "oldest supported CPU", which appears to be "core2" and builds for that:
>
> I think that's older than it needs to be for 10.12, which either requires SSE4 or SSE4.1 support.
>
>> https://github.com/Homebrew/homebrew-core/blob/master/Formula/gmp.rb
>> https://github.com/Homebrew/brew/blob/master/Library/Homebrew/hardware.rb
>>
>> ...so, should be build GMP for everything or a single, older CPU?
>
> I'd vote for "everything" to start with, as they support it, and, if that doesn't work, fall back on whatever CPU type is appropriate for "macOS 10.12 or later".
OK, I updated macos-setup.sh to configure GMP with --enable-fat and Michael reinstalled it. Jaap, can you try installing 3.0.0rc2-7-gd24a9c09 or 3.1.0rc0-167-g092d73e4 or later?
