When installing Ruby with Rbenv in M1 Mac, it throws Build Failed error with message Inspect or clean up the working tree error... Let's look at how we can resolve the error and install the Ruby with Rbenv in our M1 Mac.

Error Message

Let's reproduce the error first:

1. Install ruby with rbenv
   

   
     $ rbenv install 2.7.2
   
   

2. Install error

   You will get the following error message

  - BUILD FAILED (macOS 11.2.3 using ruby-build 20210309)
  - Inspect or clean up the working tree at `/var/folders/.....`

NOTE: In my M1 Mac, I tried installing various ruby versions with rbenv like 2.5.0, 2.6.0, 2.7.0, 2.7.1, 2.7.2 and always ran into this same issue.

Fix

Instead of running the normal ruby install command with rbenv, let's prepend it with RUBY_CFLAGS="-Wno-error=implicit-function-declaration", which will supress all error and warnings and let the ruby installation complete.

$ RUBY_CFLAGS="-Wno-error=implicit-function-declaration" rbenv install 2.5.0

Conclusion

Tada! See the magic? Ruby should install without any issue now.

Are you using any another method to fix the issue? Let us know in the comments below.

Thank you for reading!

References

• [Github] Installation issues with Arm Mac (M1 Chip)

Image Credits:

Cover Image by Joshua Fuller from Unsplash