error building sage-10.7 on mac

[mhampton]

Hi,

I am getting an error building sage-10.7 on an intel mac, the problem happens in building the contourpy-1.3.1 package.  It looks like this is a somewhat common issue, because of some versioning issue with pybind/ninja/meson tools.  I am attaching the log file for the contourpy package.  

This commit seems relevant: https://github.com/contourpy/contourpy/pull/498/

but I am not sure how to apply it correctly to sage-10.7.

Any help appreciated,

Marshall Hampton

[Dima Pasechnik]

Hi,
probably, your toolchain is too new for 10.7.
Could you try the git, develop branch, or (a bit older)
https://github.com/sagemath/sage/releases/tag/10.8.rc1 ?
Dima

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[mhampton]

I tried building 10.8.rc1, it almost got there but died compiling numpy.  I am attaching the log.  

[Dima Pasechnik]

On Tue, Dec 16, 2025 at 3:55 PM mhampton <hamp...@gmail.com> wrote:
>
> I tried building 10.8.rc1, it almost got there but died compiling numpy. I am attaching the log.

your Xcode is very old, vintage, from 2020 or ealier. (clang 12, as
opposed to an up to date clang 17).
Most probably this is the reason behind this error - noone tests for
such a toolchain.
Any chance you can get an update? We do test on Intel macs.

Dima