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add helpful note for macos users failing linking #2759

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Feb 18, 2025
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add helpful note for macos users failing linking #2759

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14 changes: 14 additions & 0 deletions doc/md/Installation_Instructions/macOS-Homebrew-Installation-Instructions.md
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Expand Up @@ -58,6 +58,20 @@ The fastest option is to run the brew command with the `arch -arm64` prefix i.e.

Visual Studio Code still runs under Rosetta 2 and if you're developing for proxmark3 on an Apple Silicon Mac you might want to consider running the Insiders build which has support for running natively on Apple Silicon.

If you see an error when linking:
```
ld: warning: ignoring file /usr/local/Cellar/.../libpython3.9.dylib, building for macOS-arm64 but attempting to link with file built for macOS-x86_64
Undefined symbols for architecture arm64:
"_PyArg_UnpackTuple", referenced from:
_SwigPyObject_own in pm3_pywrap.o
...
```
your build environment has tried to link python across architectures. You can find or install python via homebrew (arm64) and inform the linker to use this
```
brew install python@<VERSION>
export LDFLAGS="-L/opt/homebrew/Cellar/python@<VERSION>/<VERSION>.<MINORVERSION>/Frameworks/Python.framework/Versions/<VERSION>/lib/" && make
```

## Install Proxmark3 tools
^[Top](#top)

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