Thanks Ralf

Issue 24418 created. Happy to help where possible.

https://github.com/numpy/numpy/issues/24418

On Mon, Aug 14, 2023 at 7:59 AM Ralf Gommers <ralf.gomm...@gmail.com> wrote:

>
>
> On Mon, Aug 14, 2023 at 1:16 PM Doug Turnbull <softwared...@gmail.com>
> wrote:
>
>> Hey all
>>
>> First time trying to build / test numpy main branch, so I'm probably
>> doing something wrong.
>>
>> I brought down main and everything built on the first try. However I'm
>> getting test failures related to meson.
>>
>> Specifically the tests in "python -m pytest
>> numpy/core/tests/test_mem_policy.py" all give errors. The errors seem
>> related to meson and visual studio:
>>
>>
>>
>>
>> *> Visual Studio environment is needed to run Ninja. It is recommended to
>> use Meson wrapper:/Users/douglas.turnbull/ws/numpy/venv/bin/meson compile
>> -C .> ERROR: Could not detect Ninja v1.8.2 or newer*
>>
>> This is an m1 mac with Python 3.11.4. Scrolling up in meson_log.txt I see
>> a linker error:
>>
>> *> ld: symbol(s) not found for architecture arm64*
>>
>> Included system information
>>
>> Project version: undefined
>> C compiler for the host machine: cc (clang 14.0.3 "Apple clang version
>> 14.0.3 (clang-1403.0.22.14.1)")
>> C linker for the host machine: cc ld64 857.1
>> Host machine cpu family: aarch64
>> Host machine cpu: aarch64
>>
>> Snippet from meson log
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *Detecting Apple linker via: `cc -Wl,-v` -> 1stderr:@(#)PROGRAM:ld
>>  PROJECT:ld64-857.1BUILD 23:13:29 May  7 2023configured to support archs:
>> armv6 armv7 armv7s arm64 arm64e arm64_32 i386 x86_64 x86_64h armv6m armv7k
>> armv7m armv7emLibrary search paths: . /opt/homebrew/lib /usr/local/lib
>> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/libFramework search
>> paths:
>> /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Undefined
>> symbols for architecture arm64:  "_main", referenced from:     implicit
>> entry/start for main executableld: symbol(s) not found for architecture
>> arm64clang: error: linker command failed with exit code 1 (use -v to see
>> invocation)*
>>
>> Seeing a note recommending gcc in the docs, I'm going to try using gcc
>> rather than clang as next steps. But I wanted to share this issue if it is
>> indeed one.
>>
>
> Hi Doug, thanks for the report. Clang should work just fine, and is the
> default on macOS. I'm not sure what's going on there, but I can reproduce
> the issue by running `cc -Wl,-v` outside of my regular development envs.
> Would you mind opening an issue at https://github.com/numpy/numpy/issues
> with more details on how you installed your compilers and Python, and are
> activating your dev env before running the problematic `pytest` command?
>
> Cheers,
> Ralf
>
>
>
>>
>> -Doug
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>> Member address: ralf.gomm...@googlemail.com
>>
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