by the way, I am not able to pick up Homebrew's python3.8 in the presence
of python3.7, unless I modify python3's spkg-configure.m4 to exclude
python3.7 and python3 from the list of Pythons it checks for.

(on linux this seems to work well, so perhaps it is a macOS-only bug)


On Wed, 9 Sep 2020, 15:53 Matthias Köppe, <[email protected]> wrote:

> On Wednesday, September 9, 2020 at 2:49:19 AM UTC-7, [email protected]
> wrote:
>>
>> If I understand well, I’m facing the case (not completely sure):
>> homebrew-macos-python3_xcode-gcc_spkg-{minimal,standard}: Various build
>> errors (ignore for Sage 9.2)
>>
>> That is: macOS 10.15.6 with clang version 11.0.3 (clang-1103.0.32.62) and
>> all recommended packages installed with homebrew, and unable to compile
>> beta12.
>>
>>
> Actually your configuration is "homebrew-macos-standard" with probably
> some extra homebrew packages installed.
>
> (The configuration factor "gcc_spkg" refers to using gcc 9.2 from our SPKG
> instead of Xcode "gcc" (clang).)
>
> My guess is that if you uninstall homebrew's ntl and flint packages and
> build from scratch (distclean), the build would go through.
>
> https://trac.sagemath.org/ticket/27764 and tickets referenced within
> address the NTL / thread-local storage issues.
>
>
>
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