-- Configuring incomplete, errors occurred!

[Robotic3DSystems]

Hello, when I try to launch the command "Brew install install rl" from MacBook M1 Pro, I always get the same error:

Last 15 lines from /Users/jacoporossi/Library/Logs/Homebrew/rl/01.cmake:
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /opt/homebrew/Library/Homebrew/shims/mac/super/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found Boost: /opt/homebrew/lib/cmake/Boost-1.81.0/BoostConfig.cmake (found version "1.81.0")
CMake Error at /opt/homebrew/Cellar/cmake/3.26.3/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
Could NOT find Eigen3 (missing: EIGEN3_INCLUDE_DIRS)
Call Stack (most recent call first):
/opt/homebrew/Cellar/cmake/3.26.3/share/cmake/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
cmake/FindEigen3.cmake:79 (find_package_handle_standard_args)
src/rl/math/CMakeLists.txt:2 (find_package)

Maybe it's a stupid question.
I am a beginner macOS user, but I know how to use the Linux distro and related terminal commands.

[rickertm]

It looks like RL cannot resolve the Eigen3 dependency when generating the build files. Homebrew's eigen package is defined as a dependency in the rl formula, so it should be installed automatically. Which macOS and Homebrew version are you using? Could you please check if the eigen package is installed in your Homebrew installation?

As an alternative, you can try installing the head version of RL instead of 0.7.0, which also supports the current Qt6 package in Homebrew:

brew install --head rl