Crash at initial import fitz

[macdeport]

Please provide all mandatory information!

Describe the bug (mandatory)

When executing initial import:

Traceback (most recent call last):
  File "/var/folders/0d/dj43zrpj3kg85hdt91_cjwy00000gp/T/BBEditRunTemp-untitled text 38.py", line 1, in <module>
    import fitz
  File "/Users/alain/Library/Python/3.9/lib/python/site-packages/fitz/__init__.py", line 10, in <module>
    from fitz.fitz import *
  File "/Users/alain/Library/Python/3.9/lib/python/site-packages/fitz/fitz.py", line 15, in <module>
    from . import _fitz
ImportError: dlopen(/Users/alain/Library/Python/3.9/lib/python/site-packages/fitz/_fitz.cpython-39-darwin.so, 2): Symbol not found: ____chkstk_darwin
  Referenced from: /Users/alain/Library/Python/3.9/lib/python/site-packages/fitz/_fitz.cpython-39-darwin.so
  Expected in: /usr/lib/libSystem.B.dylib
 in /Users/alain/Library/Python/3.9/lib/python/site-packages/fitz/_fitz.cpython-39-darwin.so

To Reproduce (mandatory)

Explain the steps to reproduce the behavior, For example, include a minimal code snippet, example files, etc.
My installation of PyMuPDF:
pip-3.9 install -U pymupdf

Expected behavior (optional)

Describe what you expected to happen (if not obvious).

Screenshots (optional)

If applicable, add screenshots to help explain your problem.

Your configuration (mandatory)

• Operating system, potentially version and bitness
• Python version, bitness
• PyMuPDF version, installation method (wheel or generated from source):
  wheel method

For example, the output of print(sys.version, "\n", sys.platform, "\n", fitz.__doc__) would be sufficient (for the first two bullets).

3.9.7 (default, Sep  1 2021, 02:08:24) 
[Clang 7.0.2 (clang-700.1.81)] 
darwin  

Additional context (optional)

Add any other context about the problem here.

[JorjMcKie]

Well, obviously incorrectly installed.
This is an Intel machine, right?
I have no Mac, so cannot reproduce the error. What other information do you have?
How does your pymupdf Python installation directory look like? I.e. this one: /Users/alain/Library/Python/3.9/lib/python/site-packages/fitz
What was the console protocol of the installation?

[macdeport]

First of all, thank you for trying to help me quickly.

Well, obviously incorrectly installed.

Yes

This is an Intel machine, right?

Yes

I have no Mac, so cannot reproduce the error. What other information do you have?

A quite "old" system => Mac OS X 10.10.5 (Yosemite)

How does your pymupdf Python installation directory look like? I.e. this one:
/Users/alain/Library/Python/3.9/lib/python/site-packages/fitz

What was the console protocol of the installation?

You are welcome, thanks,

[JorjMcKie]

Weird. I just made a little Github action to test installation and invocation of pymupdf: it did work, here is the log
1_Install on OSX.txt

[JorjMcKie]

As a sort of last resort: try to upgrade pip

[macdeport]

#1296 (comment)
@JorjMcKie If I understand correctly: from the log you shared I discover that you can follow the progress of my pip installation of PyMuPDF.

This installation seems to have gone smoothly.

But on closer inspection there seems to be an inconsistency, still if I understand well: the MacOS 10.15.7 version is invoked while I (still) use the 10.10.5 version :-(

The pip install script seems to confuse 10.15.7 <=> 10.10.5 and install the wrong version of the binary
_fitz.cpython-39-darwin.so

Under these conditions is it realistic to try the "generated from source" method unless you have other versions of '_fitz.cpython-39-darwin.so'?

[macdeport]

As a sort of last resort: try to upgrade pip

Unfortunately I have already try to updated pip:

[JorjMcKie]

Under these conditions is it realistic to try the "generated from source" method unless you have other versions of '_fitz.cpython-39-darwin.so'?

Yes, I would do that! And no, this is the only OSX stuff I am able to generate.
If you need an installation script for this undertaking, you may want to derive it from here.

[macdeport]

So I will try. Thank you for your documented help.

[mlove4u]

In my Case:
Mac OS: 10.12.1
Python3: 3.7.4

When pymupdf<=1.18.14, it can be imported. But error when version>=1.18.15.

[macdeport]

I can confirm on Mac OS: 10.10.15

[G3zz]

I am still hitting this issue - did anyone manage to resolve and get 1.18.17 working? I'm on an m1 machine.
EDIT: #429 following advice from here I double checked that pymupdf was the same version as the installed mupdf and it was not. Once I matched them (1.19.1 in my case), the import started working 😄