Native integration of Core packages.

[zfb7901]

No description provided.

[std-s]

Pod::Spec.new do |s|
  s.name             = 'flutter_openim_sdk'
  s.version          = '0.0.1'
  s.summary          = 'A new Flutter project.'
  s.description      = <<-DESC
A new Flutter project.
                       DESC
  s.homepage         = 'http://example.com'
  s.license          = { :file => '../LICENSE' }
  s.author           = { 'Your Company' => 'email@example.com' }
  s.source           = { :path => '.' }
  s.source_files = 'Classes/**/*'
  s.dependency 'Flutter'
  s.platform = :ios, '11.0'

  s.static_framework = true
  s.vendored_frameworks = 'Framework/*.xcframework'
  # Flutter.framework does not contain a i386 slice.
  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386 arm64' }
  s.swift_version = '5.0'
end

Refer here, then create a Framework folder and put the compiled framework in it.