I was trying to install this on an old MacBook Air (OS Monterey) . Lots of similar issues. Found a lot of posts here and on StackOverflow. End result, this worked. Posting here as currently valid.
Navigate to where Ruby is installed. Check the log file mentioned in the error message, that should be a clue.
Run this command -
$ ??? % cd /Applications/XCode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0
% cd ruby
%ls ( Check if config.h is present in this directory) . If you see it, proceed to -
% sudo gem install -n/usr/local/bin cocoapods -v 1.8.4
rsows_AA_000
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
Last seen