Please see https://github.com/fermoya/CatalystPodSupport for updates

remove_unsupported_libraries.rb

###### CONSISTENCY BETWEEN MACOS AND IOS #####
#
# In order to use the same PodFile with MacOS, we need to unlink the libraries that do not support Catalyst, filter
# files in native targets build phases, filter dependencies and make sure the unsupported frameworks along with their
# their bundle resources are not included in the final archive. For that, we use `platform_filter` to specify 'ios' and
# 'OTHER_LDFLAGS[sdk=iphone*]' to link those libraries for iPhone and iPad. Besides, we modify "*frameworks.sh" and 
# "*resrouces.sh" to skip installation for architecture x86_64.
#
# *Notice*: 'sdk=iphone*' excludes macOS, even though Catalyst is compiled with iOS SDK.
#
# ADDING A NEW LIBRARY
#
# Pass the name of the new library to the script
#
###### RESOURCES #######
#
# https://www.bitbuildr.com/tech-blog/mac-catalyst-porting-an-app-using-crashlytics-firebase - Article that inspired this script
# https://github.com/CocoaPods/Xcodeproj - Xcode configuration using ruby. This Framework is already included on cocoapods environment
# https://www.rubydoc.info/gems/xcodeproj/Xcodeproj/Project/Object/AbstractTarget Wiki for Xcodeproj
#

include Xcodeproj::Project::Object
include Pod

$verbose = false

def loggs string
  if $verbose
    puts string
  end
  return
end

# EXTENSIONS

class String
  def filter_lines
    lines = []
    each_line do |line| 
      if yield line
        lines = lines + [line]
      end
    end
    return lines
  end
end

class PBXNativeTarget

  ###### STEP 4 ######
  # In "Pods-" targets, modify "*frameworks.sh" to not install unsupported frameworks for platform architectures
  def uninstall_frameworks frameworks, platform, configurations
    uninstall frameworks, "#{name}-frameworks.sh", platform.architectures, configurations
  end

  ###### STEP 5 ######
  # In "Pods-" targets, modify "*resources.sh" to not install unsupported frameworks for platform architectures
  def uninstall_resources resources, platform, configurations
    uninstall resources, "#{name}-resources.sh", platform.architectures, configurations
  end

  def support_files_folder
    build_configurations.filter do |config| not config.base_configuration_reference.nil? end.first.base_configuration_reference.real_path.parent
  end

  @private
  def uninstall keys, file_name, architectures, configurations=nil
    configurations = configurations.nil? ? build_configurations.map { |b| b.name } : configurations
    keys = keys.to_set.to_a
    loggs "\t\t\tUninstalling for configurations: #{configurations}"
    if support_files_folder.nil?
      loggs "\t\t\tNothing to uninstall"
      return
    end

    script_path = support_files_folder.join file_name
    if !script_path.exist?
      loggs "\t\t\tNothing to uninstall"
      return
    end

    script = File.read(script_path)
    snippets = script.scan(/if \[\[ \"\$CONFIGURATION\" [\S\s]*?(?=fi\n)fi/)
    condition = architectures.map do |arch| "[ \"$ARCHS\" != \"#{arch}\" ]" end.reduce("") do |total, piece| total.empty? ? piece : total + " || " + piece end
    changed = false
    
    snippets.filter do |snippet|
      configurations.map do |string| snippet.include? string end.reduce(false) do |total, condition| total = total || condition end
    end.each do |snippet|
      new_snippet = snippet.clone
      keys.each do |key|
        lines_to_replace = snippet.filter_lines do |line| line.include? "#{key}" end.to_set.to_a
        unless lines_to_replace.empty?
          changed = true
          lines_to_replace.each do |line|
            new_snippet.gsub! line, "\tif #{condition}; then \n\t#{line}\tfi\n"
          end
        end
      end
      script.gsub! snippet, new_snippet
    end

    if changed
      File.open(script_path, "w") { |file| file << script }
    end
    loggs "\t\t\t#{changed ? "Succeded" : "Nothing to uninstall"}"
  end

  ###### STEP 1 ######
  # In native target's build phases, add platform filter to:
  # - Resources 
  # - Compile Sources
  # - Frameworks
  # - Headers
  def add_platform_filter_to_build_phases platform
    loggs "\t\t- Filtering resources"
    resources_build_phase.files.to_a.map do |build_file| build_file.platform_filter = platform.name end
    
    loggs "\t\t- Filtering compile sources"
    source_build_phase.files.to_a.map do |build_file| build_file.platform_filter = platform.name end
    
    loggs "\t\t- Filtering frameworks"
    frameworks_build_phase.files.to_a.map do |build_file| build_file.platform_filter = platform.name end
    
    loggs "\t\t- Filtering headers"
    headers_build_phase.files.to_a.map do |build_file| build_file.platform_filter = platform.name end
  end

end

class PodTarget

  def module_name
    string = name.clone.gsub! /-iOS[0-9]+(\.[0-9])+$/, ''
    return string.nil? ? name : string
  end

  def resources 
    return file_accessors.flat_map do |accessor| accessor.resources end.map do |path| "#{path.basename}" end
  end
  
  def vendor_products
    return file_accessors.flat_map do |accessor| 
      accessor.vendored_frameworks + accessor.vendored_libraries
    end.map do |s| s.basename 
    end.map do |s|
      name = "#{s}"
      if name.include? "framework"
        PodDependency.newFramework name.sub(".framework", "")
      else
        PodDependency.newLibrary name.sub("lib", "").sub(".a", "")
      end
    end
  end

  def frameworks
    return file_accessors.flat_map do |accessor| 
      accessor.spec_consumer.frameworks.map do |name| PodDependency.newFramework name  end + accessor.spec_consumer.libraries.map do |name| PodDependency.newLibrary name end
    end
  end

end

class PBXTargetDependency
  def module_name
    string = name.clone.gsub! /-iOS[0-9]+(\.[0-9])+$/, ''
    return string.nil? ? name : string
  end
end

class AbstractTarget

  def module_name
    string = name.clone.gsub! /-iOS[0-9]+(\.[0-9])+$/, ''
    return string.nil? ? name : string
  end

  ###### STEP 2 ######
  # In all targets (aggregates + native), filter dependencies
  def add_platform_filter_to_dependencies platform
    loggs "\t\t- Filtering dependencies"
    dependencies.each do |dependency|
      dependency.platform_filter = platform.name
    end
  end

  ###### STEP 3 ######
  # If any unsupported library, then flag as platform-dependant for every build configuration
  def flag_libraries libraries, platform
    loggs "\tTarget: #{name}"
    build_configurations.filter do |config| not config.base_configuration_reference.nil? 
    end.each do |config|
      loggs "\t\tScheme: #{config.name}"
      xcconfig_path = config.base_configuration_reference.real_path
      xcconfig = File.read(xcconfig_path)

      changed = false
      libraries.each do |framework|
        if xcconfig.include? framework
          xcconfig.gsub!(framework, '')
          unless xcconfig.include? "OTHER_LDFLAGS[sdk=#{platform.sdk}]"
            changed = true
            xcconfig += "OTHER_LDFLAGS[sdk=#{platform.sdk}] = $(inherited) -ObjC "
          end
          xcconfig += framework + ' '
        end
      end

      File.open(xcconfig_path, "w") { |file| file << xcconfig }
      loggs "\t\t\t#{changed ? "Succeded" : "Nothing to flag"}"
    end
  end

  def to_dependency
    # We return both as we don't know if build as library or framework
    return [PodDependency.newFramework(module_name), PodDependency.newLibrary(module_name)]
  end

  # Dependencies contained in Other Linker Flags
  def other_linker_flags_dependencies
    frameworks = Array.new
    libraries = Array.new
  
    config = build_configurations.filter do |config| not config.base_configuration_reference.nil? end.first
    xcconfig_path = config.base_configuration_reference.real_path
    xcconfig = File.read(xcconfig_path)
    xcconfig.gsub!(/\r\n?/, "\n")
  
    xcconfig.each_line do |line|
      if line.start_with? 'OTHER_LDFLAGS'
        frameworks = frameworks + line.split("-framework").map do |s|
          s.strip.delete("\n") end.filter do |s| 
          s.strip.start_with? '"' end
        libraries = libraries + line.split("-l").filter do |s| s.strip.start_with? '"' end.map do |s| s.strip.split(' ').first end
      end
    end

    libraries = libraries.map do |name| PodDependency.newLibrary(name.gsub!("\"", "")) end
    frameworks = frameworks.map do |name| PodDependency.newFramework(name.gsub!("\"", "")) end

    return OtherLinkerFlagsDependencies.new libraries, frameworks 
  end
end

# HELPER CLASSES

class PodDependency
  attr_reader :name
  attr_reader :type

  def link
    if library?
      return "-l\"#{name}\""
    else
      return "-framework \"#{name}\"" 
    end
  end

  def library?
    return type == "library"
  end

  def framework?
    return type == "framework"
  end

  def self.newFramework name
    return PodDependency.new(name, "framework")
  end

  def self.newLibrary name
    return PodDependency.new(name, "library")
  end

  def ==(other)
    name == other.name && type == other.type
   end

  def eql?(other)
    name == other.name
   end

  private
  def initialize(name, type)
    @name = name
    @type = type
  end

end

class OtherLinkerFlagsDependencies
  attr_reader :libraries
  attr_reader :frameworks

  def initialize(libraries = [], frameworks = [])
    @libraries = libraries
    @frameworks = frameworks
  end

  def combine dependencies
    frameworks = (dependencies.frameworks + @frameworks).to_set.to_a
    libraries = (dependencies.libraries + @libraries).to_set.to_a
    return OtherLinkerFlagsDependencies.new libraries, frameworks
  end

  def dependencies
    libraries + frameworks
  end

end

class OSPlatform
  attr_reader :sdk
  attr_reader :name
  attr_reader :architectures

  def self.ios
    OSPlatform.new 'ios', 'iphone*', ['arm64', 'armv7s', 'armv7']
  end

  def self.macos
    OSPlatform.new 'macos', 'macosx*', ['x86_64']
  end

  def self.wtachos
    OSPlatform.new 'watchos', 'watchos*', ['arm64_32', 'armv7k']
  end

  def self.tvos
    OSPlatform.new 'tvos', 'appletvos*', ['arm64']
  end

  private 
  def initialize(name, sdk, architectures)
    @name = name
    @sdk = sdk
    @architectures = architectures
  end

end

# SCRIPT

class Installer

  def configure_support_catalyst pod_names_to_keep, pod_names_to_remove, configurations=nil

    ###### Variable definition ###### 
    targets = pods_project.targets

    pod_names_to_remove = pod_names_to_remove.map do |name| name.sub('/', '') end
    pod_names_to_keep = pod_names_to_keep.map do |name| name.sub('/', '') end

    pod_names_to_keep = recursive_dependencies pod_names_to_keep
    pod_names_to_remove = recursive_dependencies(pod_names_to_remove).filter do |name| !pod_names_to_keep.include? name end

    pod_targets_to_keep = pod_targets.filter do |pod| pod_names_to_keep.include? pod.module_name end       # PodTarget
    pod_targets_to_remove = pod_targets.filter do |pod| pod_names_to_remove.include? pod.module_name end   # PodTarget

    loggs "\n#### Unsupported Libraries ####\n#{pod_names_to_remove}\n"

    targets_to_remove = targets.filter do |target| pod_names_to_remove.include?(target.module_name) end  # AbstractTarget
    pods_targets = targets.filter do |target| target.name.start_with? "Pods-" end   # AbstractTarget
    cross_platform_targets = targets.filter do |target| !targets_to_remove.include?(target) && !pods_targets.include?(target) end   # AbstractTarget

    ######  Determine which dependencies should be removed ###### 
    dependencies_to_keep = cross_platform_targets.reduce(OtherLinkerFlagsDependencies.new) do |dependencies, target| 
      dependencies.combine target.other_linker_flags_dependencies 
    end.dependencies
    
    # [PodDependency]
    dependencies_to_keep = dependencies_to_keep + cross_platform_targets.flat_map do |target| target.to_dependency end + pod_targets_to_keep.flat_map do |pod| pod.vendor_products + pod.frameworks end

    dependencies_to_remove = targets_to_remove.reduce(OtherLinkerFlagsDependencies.new) do |dependencies, target| 
      dependencies.combine target.other_linker_flags_dependencies 
    end.dependencies
    
    # [PodDependency]
    dependencies_to_remove = dependencies_to_remove + targets_to_remove.flat_map do |target| target.to_dependency end + pod_targets_to_remove.flat_map do |pod| pod.vendor_products + pod.frameworks end
    dependencies_to_remove = dependencies_to_remove.filter do |d| !dependencies_to_keep.include? d end

    ###### CATALYST NOT SUPPORTED LINKS ###### 
    unsupported_links = dependencies_to_remove.map do |d| d.link end.to_set.to_a
    
    loggs "#### Unsupported dependencies ####\n"
    loggs "#{dependencies_to_remove.map do |d| d.name end.to_set.to_a }\n\n"

    ###### CATALYST NOT SUPPORTED FRAMEWORKS AND RESOURCES
    frameworks_to_uninstall = dependencies_to_remove.filter do |d| d.framework? end.map do |d| "#{d.name}.framework" end.to_set.to_a
    resources_to_uninstall = pod_targets_to_remove.flat_map do |pod| pod.resources end.to_set.to_a

    loggs "#### Frameworks not to be included in the Archive ####\n"
    loggs "#{frameworks_to_uninstall}\n\n" 

    loggs "#### Resources not to be included in the Archive ####\n"
    loggs "#{resources_to_uninstall}\n\n"

    ###### OTHER LINKER FLAGS -> to iphone* ###### 
    loggs "#### Flagging unsupported libraries ####"
    targets.each do |target| target.flag_libraries unsupported_links, OSPlatform.ios end

    ###### BUILD_PHASES AND DEPENDENCIES -> PLATFORM_FILTER 'ios' ###### 
    loggs "\n#### Filtering build phases ####"
    targets_to_remove.filter do |target| 
      pods_project.native_targets.include? target
    end.each do |target| 
      loggs "\tTarget: #{target.name}"
      target.add_platform_filter_to_build_phases OSPlatform.ios 
      target.add_platform_filter_to_dependencies OSPlatform.ios
    end

    loggs "\n#### Filtering dependencies ####"
    targets_to_remove.filter do |target| 
      !pods_project.native_targets.include? target
    end.each do |target| 
      loggs "\tTarget: #{target.name}"
      target.add_platform_filter_to_dependencies OSPlatform.ios 
    end

    ###### FRAMEWORKS AND RESOURCES SCRIPT -> if [ "$ARCHS" != "x86_64" ]; then #######   
    loggs "\n#### Chagings frameworks and resources script ####"
    pods_targets.each do |target|
      loggs "\tTarget: #{target.name}"
      loggs "\t\t-Uninstalling frameworks"
      target.uninstall_frameworks frameworks_to_uninstall, OSPlatform.macos, configurations

      loggs "\t\t-Uninstalling resources"
      target.uninstall_resources resources_to_uninstall, OSPlatform.macos, configurations
    end
  end

  @private
  def recursive_dependencies to_filter_names
    targets = pods_project.targets
    targets_to_remove = targets.filter do |target| to_filter_names.include? target.module_name end
    dependencies = targets_to_remove.flat_map do |target| target.dependencies end
    dependencies_names = dependencies.map do |d| d.module_name end
  
    if dependencies.empty?
      return to_filter_names + dependencies_names
    else
      return to_filter_names + recursive_dependencies(dependencies_names)
    end
  
  end

end

@fermoya,

None of my Cocoapods xcconfig files have "OTHER_LDFLAGS[sdk=iphone*]". How is that set?

@henrytkirk, you need to go to your project folder and run pod install from the terminal so that configure_support_catalyst is called from your Podfile.

Yes, that's how I've been doing it.

@henrytkirk, do you maybe want to schedule a Skype call? Reach me out at [email protected]

@fermoya have you used this with the unsupported pod AppCenter/Distribute?

@Brett-Best, no I haven't. When you do pod AppCenter/Distribute it seems that the pod target installed is called AppCenter and not AppCenterDistribute as the script expects. So instead, you should add AppCenter to the unsupported list.

Please, refer to CatalystPodSupport in the future

I don't understand, I'm trying to add a simple pod:
pod 'Firebase/Analytics'
and it doesn't work, does anyone have a simple, the most simple Podfile configuration to include this so it doesn't crash with macOS?

please help

Hi @afern247, this script is outdated. Please visit https://github.com/fermoya/CatalystPodSupport