Flutter package with static ios framework and cloud_firestore package

Question

I am working on Flutter package which depends on static ios framework as spec.dependency 'static-pod', '~> 1.0.0' in podspec

When I'm using my package in project with use_modular_headers! everything works fine. But when I'm trying to add cloud_firestore package I'm getting this issue:

Error (Xcode): module map file '/Users/me/projects/flutter-project/ios/Pods/Headers/Private/openssl_grpc/BoringSSL-GRPC.modulemap' not found

If I try to add use_frameworks! :linkage => :static I'm getting next error:

Lexical or Preprocessor Issue (Xcode): 'plugin-Swift.h' file not found
/Users/me/.pub-cache/hosted/pub.dev/plugin-1.4.7/ios/Classes/MyPlugin.m:1:8

In my ios/Classes directory next structure:

• MyPlugin.h
• MyPlugin.m
• SwiftMyPlugin.swift

And full plugin podspec file:

require 'yaml'

pubspec = YAML.load_file(File.join('..', 'pubspec.yaml'))

Pod::Spec.new do |spec|
  spec.name             = pubspec['name']
  spec.version          = pubspec['version']
  spec.summary          = 'My Flutter plugin.'
  spec.description      = pubspec['description']
  spec.homepage         = pubspec['homepage']
  spec.license          = { :type => 'MIT License', :file => '../LICENSE' }
  spec.author           = '[email protected]'
  spec.source           = { :path => '.' }

  spec.source_files = 'Classes/**/*'
  spec.public_header_files = 'Classes/**/*.h'

  spec.platform = :ios, '14.0'
  spec.dependency 'Flutter'
  spec.dependency 'static-pod', '~> 1.0.0'

  # Flutter.framework does not contain a i386 slice.
  spec.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
  spec.swift_version = '5.0'
end

Answer 1

use_modular_headers! does not work with Firestore. Details in https://github.com/firebase/firebase-ios-sdk/issues/3816.

Firestore, as well as all of recent Firebase product versions, should be integrated with use_frameworks! or use_frameworks! :linkage => :static.