flutter doctor - CocoaPods installed but not working - flutter

Question

using zsh - use to work in bash
brew doctor - Your system is ready to brew.
flutter doctor gives this error
[!] Xcode - develop for iOS and macOS (Xcode 12.2)
✗ CocoaPods installed but not working.
You appear to have CocoaPods installed but it is not working.
This can happen if the version of Ruby that CocoaPods was installed with is different from the one being used to invoke it.
This can usually be fixed by re-installing CocoaPods. For more info, see https://github.com/flutter/flutter/issues/14293.
To re-install CocoaPods, run:
sudo gem install cocoapods
sudo gem install cocoapods
Gives this error
dyld: Library not loaded: /usr/local/opt/gmp4/lib/libgmp.3.5.2.dylib
Referenced from: /Users/puser/.rvm/rubies/ruby-2.5.1/bin/ruby
Reason: image not found
zsh: abort sudo gem install cocoapods
I can't get this error above corrected - any suggestions?
which pod
/Users/puser/.rvm/rubies/ruby-2.5.1/bin/pod
which gem
gem () {
\typeset result
(
\typeset rvmrc
rvm_rvmrc_files=("/etc/rvmrc" "$HOME/.rvmrc")
if [[ -n "${rvm_prefix:-}" ]] && ! [[ "$HOME/.rvmrc" -ef "${rvm_prefix}/.rvmrc" ]]
then
rvm_rvmrc_files+=("${rvm_prefix}/.rvmrc")
fi
for rvmrc in "${rvm_rvmrc_files[#]}"
do
[[ -s "${rvmrc}" ]] && source "${rvmrc}" || true
done
unset rvm_rvmrc_files
command gem "$#"
) || result=$?
hash -r
return ${result:-0}
}
which ruby
/Users/puser/.rvm/rubies/ruby-2.5.1/bin/ruby

Answer 1

Using the suggestion for this post, I was able to get cocoapods reinstalled with the commands below
gem native extension error while installing cocoapods
Open Terminal
curl -L https://get.rvm.io | bash -s stable
Reopen Terminal
rvm install ruby-2.6
rvm use ruby-2.6.5
rvm --default use 2.6.5
Then this installed cocoapods as expected
sudo gem install cocoapods

Answer 2

Use brew and gem
first uninstall by gem
sudo gem uninstall cocoapods
Install cocoapods by brew
brew install cocoapods
link using brew
brew link --overwrite cocoapods

Answer 3

First install brew package manager for Mac.
https://brew.sh
If you use macOS, system Ruby is not recommended. and you should not use it. its for system specific use. you need to install another one for user.
brew install rbenv
then install the latest version of ruby. as today its 3.1.0
rbenv install 3.1.0
then set the global version of Ruby to be used in all shells
rbenv global 3.1
close the terminal and reopen it again, to affect the changes.
and finally install cocoapods
gem install cocoapods
as you see you don't use sudo command. because you are not overriding system specific configurations. when you need to use sudo command means you are doing something that you should avoid it.
if you are using fastlane and still complaining about cocoapods, even cocoapods is installed properly, reinstall fastlane again:
brew uninstall fastlane
gem install fastlane

Answer 4

curl -L https://get.rvm.io | bash -s stable
rvm install ruby-2.6
rvm use ruby-2.6.5
rvm --default use 2.6.5
sudo gem update
sudo gem install ffi
brew install libffi
sudo gem install cocoapods
pod setup
this worked for me

Answer 5

sudo gem uninstall cocoapods
rvm install 2.6.5
sudo gem install cocoapods

Answer 6

I am using MacBook Pro (2020) with M1 and following steps worked
url -L https://get.rvm.io | bash -s stable
rvm install ruby-2.6
rvm reinstall ruby-2.6.6
rvm use ruby-2.6.6
rvm --default use 2.6.6
sudo gem install cocoapods
Finally you can run flutter doctor to confirm.
flutter doctor
Output will be like this...
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.10.4, on macOS 12.4 21F79 darwin-arm, locale
en-GB)
[✓] Android toolchain - develop for Android devices (Android SDK version
32.0.0-rc1)
[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2021.2)
[✓] VS Code (version 1.68.1)
[✓] Connected device (1 available)
[✓] HTTP Host Availability

Answer 7

Please install latest version of ruby to solve this issue.
Use this command
rvm install ruby
rvm use ruby
rvm --default use

Answer 8

sudo gem install -n /usr/local/bin cocoapods
Just run this command for installing the latest version of coc

Answer 9

This error took me about one week to solve :(
The problem is mentioned clearly in the flutter output like this
This can happen if the version of Ruby that CocoaPods was installed with is different from the one being used to invoke it.
I had a lot of versions of ruby installed on my mac So this error happened to solve this error follow these steps
remove or uninstall cocoapods
remove all versions of ruby in your mac os except the system ruby version you can do that like this.
https://mac.install.guide/ruby/9.html#:~:text=Uninstall%20Ruby%20on%20Mac%20with%20rbenv,command%20to%20remove%20a%20version.&text=This%20will%20remove%20any%20gems,recommendations%20of%20newer%20version%20managers.
install ruby again using this link https://mac.install.guide/ruby/13.html
install cocoapods with this command :- brew install cocoapods