onnxruntime failed to build, fatal error: 'Eigen/Core' file not found

[layerssss]

brew gist-logs <formula> link OR brew config AND brew doctor output

https://gist.github.com/layerssss/41e7b679e681cec8624cb4559ec34cd7

Verification

• My brew doctor output says Your system is ready to brew. and am still able to reproduce my issue.
• I ran brew update and am still able to reproduce my issue.
• I have resolved all warnings from brew doctor and that did not fix my problem.
• I searched for recent similar issues at https://github.com/Homebrew/homebrew-core/issues?q=is%3Aissue and found no duplicates.

What were you trying to do (and why)?

Build onnxruntime from source

What happened (include all command output)?

Running command.

brew install --build-from-source onnxruntime

Last lines of the output

izer.cc.o" "CMakeFiles/onnxruntime_optimizer.dir/private/tmp/onnxruntime-20250609-56064-c60bir/onnxruntime/core/optimizer/unsqueeze_elimination.cc.o" "CMakeFiles/onnxruntime_optimizer.dir/private/tmp/onnxruntime-20250609-56064-c60bir/onnxruntime/core/optimizer/utils.cc.o"
/usr/bin/ranlib libonnxruntime_optimizer.a
[ 51%] Built target onnxruntime_optimizer
make: *** [all] Error 2


READ THIS: https://docs.brew.sh/Troubleshooting

What did you expect to happen?

The package should build and install without error.

Step-by-step reproduction instructions (by running brew commands)

brew update
brew install --build-from-source onnxruntime

[botantony]

Building for source is not recommended (see Tier Support). Why did you decide not to install pre-built package?

[botantony]

There might be a problem with your configuration, it builds from source on my machine (macOS 15 with ARM): https://gist.github.com/botantony/7884e5c80242827b221bfaf39510be61

[layerssss]

@botantony the reason I was trying to build from source is I'm exploring building my own tap with USE_COREML=on flag by copying from the official formula.

I noticed that the different between our logs is that your one has the step configuring Eigen (https://gist.github.com/botantony/7884e5c80242827b221bfaf39510be61#file-03-cmake-L75), while my one doesn't. (https://gist.github.com/layerssss/41e7b679e681cec8624cb4559ec34cd7#file-03-cmake-L73)