This is the only thing that worked for me!
I was trying to simply run bundle install for Ruby and the linking was off for some reason, I couldn't even build Ruby from source.
After 3 days trying everything this solved it and got rid of the error:
ruby/defines.h:16:10: fatal error: 'stdio.h' file not found
Many thanks!
Kakubei
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
From
England