m1 mac flutter runでエラー - ta

### Error
    LoadError - dlopen(/Library/Ruby/Gems/2.6.0/gems/ffi-1.15.0/lib/ffi_c.bundle, 9): no suitable image found.  Did find:
        /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.0/lib/ffi_c.bundle: mach-o, but wrong architecture
        /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.0/lib/ffi_c.bundle: mach-o, but wrong architecture - /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.0/lib/ffi_c.bundle
2
    /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.0/lib/ffi.rb:6:in `rescue in <top (required)>'
    /Library/Ruby/Gems/2.6.0/gems/ffi-1.15.0/lib/ffi.rb:3:in `<top (required)>'
2
    /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    /Library/Ruby/Gems/2.6.0/gems/ethon-0.14.0/lib/ethon.rb:3:in `<top (required)>'
2
    /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    /Library/Ruby/Gems/2.6.0/gems/typhoeus-1.4.0/lib/typhoeus.rb:2:in `<top (required)>'
2
    /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/sources_manager.rb:74:in `cdn_url?'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/sources_manager.rb:36:in `create_source_with_url'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/sources_manager.rb:21:in `find_or_create_source_with_url'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer/analyzer.rb:178:in `block in sources'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer/analyzer.rb:177:in `map'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer/analyzer.rb:177:in `sources'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer/analyzer.rb:1073:in `block in resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/user_interface.rb:64:in `section'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer/analyzer.rb:1072:in `resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer/analyzer.rb:124:in `analyze'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer.rb:414:in `analyze'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer.rb:239:in `block in resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/user_interface.rb:64:in `section'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer.rb:238:in `resolve_dependencies'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/installer.rb:160:in `install!'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/command/install.rb:52:in `run'
    /Library/Ruby/Gems/2.6.0/gems/claide-1.0.3/lib/claide/command.rb:334:in `run'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/lib/cocoapods/command.rb:52:in `run'
    /Library/Ruby/Gems/2.6.0/gems/cocoapods-1.10.1/bin/pod:55:in `<top (required)>'
    /usr/local/bin/pod:23:in `load'
    /usr/local/bin/pod:23:in `<main>'

issueを見たけど、あまりbrewをインストールしたくない。サードパーティなので。

1.14.2 arm64 / m1 issue: ffi_c.bundle, 9: no suitable image found. · Issue #878 · ffi/ffi · GitHub

rosettaで開く

$ arch
i386

sudo gem install ffi

flutter runじゃなくて、pod installを実行してみる

$ pod install
Analyzing dependencies
cloud_functions: Using Firebase SDK version '7.11.0' defined in 'firebase_core'
firebase_core: Using Firebase SDK version '7.11.0' defined in 'firebase_core'
Adding spec repo `trunk` with CDN `https://cdn.cocoapods.org/`
[!] CocoaPods could not find compatible versions for pod "cloud_functions":
  In Podfile:
    cloud_functions (from `.symlinks/plugins/cloud_functions/ios`)

Specs satisfying the `cloud_functions (from `.symlinks/plugins/cloud_functions/ios`)` dependency were found, but they required a higher minimum deployment target.

[!] Automatically assigning platform `iOS` with version `9.0` on target `Runner` because no platform was specified. Please specify a platform for this target in your Podfile. See `https://guides.cocoapods.org/syntax/podfile.html#platform`.

適当に platform :ios, '11.0'

firebase sdkのintallは成功

[!] CocoaPods did not set the base configuration of your project because your project already has a custom config set. 

In order for CocoaPods integration to work at all, 
please either set the base configurations of the target `Runner` to `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` 
or 
include the `Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig` in your build configuration (`Flutter/Release.xcconfig`).

※適宜改行追加

まだ上記の警告が出るが、Flutter/Release.xcconfigを見るとPods-Runner.profile.xcconfigはincludeされてる。ただ、この時点でflutter runは成功するようになっているので問題は棚上げしておく。きっとCocoaPodsを深く理解しないといけなさそう。