libchutil on MacOS

[Tristan Croll]

The following bug report has been submitted:
Platform:        macOS-14.7.4-arm64-arm-64bit
ChimeraX Version: 1.10rc202505130148 (2025-05-13 01:48:57 UTC)
Description
Still failing to build in MacOS - looks like libchutil simply doesn't exist in the distribution? I started needing to explicitly declare it in Linux (and Windows?) a version or two back to avoid a symbol-not-found error... anyway, if I go to /Applications/ChimeraX-1.10-rc2025.05.13.app/Contents and do `find . -name "*chutil*"` the only thing that comes up is:

./Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/include/chutil

Looking at the ChimeraX-Core pyproject.toml it looks like it *should* be there (there's no Mac-specific carve-out for the library). In fact, .../site-packages/chimerax/core/lib is completely empty. 

Not sure where to go from here... advice?

Log:
Startup Messages  
---  
warning | Registration file '/Users/tcroll/Library/Application Support/ChimeraX/registration' has expired  
  

> isolde shorthand

Error running startup command 'isolde shorthand': Unknown command: isolde
shorthand  
UCSF ChimeraX version: 1.10rc202505130148 (2025-05-13)  
© 2016-2025 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  




OpenGL version: 4.1 Metal - 88.1
OpenGL renderer: Apple M1 Pro
OpenGL vendor: Apple

Python: 3.11.4
Locale: en_GB.UTF-8
Qt version: PyQt6 6.8.1, Qt 6.8.2
Qt runtime version: 6.8.2
Qt platform: cocoa
Hardware:

    Hardware Overview:

      Model Name: MacBook Pro
      Model Identifier: MacBookPro18,1
      Model Number: Z14Y000GFB/A
      Chip: Apple M1 Pro
      Total Number of Cores: 10 (8 performance and 2 efficiency)
      Memory: 32 GB
      System Firmware Version: 11881.81.4
      OS Loader Version: 10151.140.19.700.2

Software:

    System Software Overview:

      System Version: macOS 14.7.4 (23H420)
      Kernel Version: Darwin 23.6.0
      Time since boot: 41 days, 21 hours, 37 minutes

Graphics/Displays:

    Apple M1 Pro:

      Chipset Model: Apple M1 Pro
      Type: GPU
      Bus: Built-In
      Total Number of Cores: 16
      Vendor: Apple (0x106b)
      Metal Support: Metal 3
      Displays:
        HP Z27k G3:
          Resolution: 3840 x 2160 (2160p/4K UHD 1 - Ultra High Definition)
          UI Looks like: 1920 x 1080 @ 60.00Hz
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Rotation: Supported


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    build: 1.2.2.post1
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    cftime: 1.6.4.post1
    charset-normalizer: 3.4.2
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    ChimeraX-AddH: 2.2.7
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    ChimeraX-AlignmentMatrices: 2.1
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    ChimeraX-Core: 1.10rc202505130148
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    ChimeraX-Vive: 1.1
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    ChimeraX-WavefrontOBJ: 1.0
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[Zach Pearson]

The issue is that the script that makes the universal build excludes static libraries. I'm not sure why, but maybe the other programmers know.

[Tom Goddard]

Kind of absurd answering this bug report 9 months later. But I believe the Mac universal build is unable to include static libraries because the lipo command that merges Intel and ARM binaries cannot handle static archives. There might be a way to make universal static archives that we simply did not pursue because it was not needed.

[Zach Pearson]

I think most of the time when peoples' problems get fixed the attitude is "better late than never".

Thanks for the info!

[Zach Pearson]

Oh, I see the issue. We use lief to test whether object files are MachO files or not, and lipo any MachO files we find. Static libraries are lipo-able, but they're not MachO files. On the tech preview branch, I added code to compensate for that. It built and signed successfully. I cherry-picked the commit over to develop for tomorrow's builds.