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

This works really great, thanks for writing this! One issue I found is it doesn't strip resources that a Framework may contain. For example, GoogleSignIn.bundle is still present from the 'GoogleSignIn' pod. It doesn't prevent it from building but prevents it from uploading to App Store Connect.

Thanks, I appreciate it. That sounds weird, I’d swear Cocoapods scripts strip the frameworks, here I’m just unlinking them.

Maybe I’m missing something. I have my App uploaded to the App Store and works like a charm. I just have some warnings symbol-related.

I’ll dig into this, thanks a lot for your feedback.

Hi again,

Can you try adding this after line 168?

targets_to_filter.each do |target| 
  target.build_configurations.each do |config|
#    config.build_settings['DEBUG_INFORMATION_FORMAT'] = 'dwarf'
    config.build_settings['STRIP_INSTALLED_PRODUCT'] = 'YES'
    config.build_settings['COPY_PHASE_STRIP'] = 'YES'
    config.build_settings['DEPLOYMENT_POSTPROCESSING'] = 'YES'
  end
end

You can try commenting or uncommenting config.build_settings['DEBUG_INFORMATION_FORMAT'] = 'dwarf'. Let me know if it works, this should strip the symbols.

Sure, I'll give it a try and let you know.

Doesn't seem to work:
ERROR ITMS-90276: "Missing Bundle Identifier. The application bundle contains a tool or framework ${PRODUCT_NAME} [com.myapp.myapp.pkg/Payload/MyApp.app/Contents/Resources/GoogleSignIn.bundle] that is missing the bundle identifier in its Info.plist file."

Hi, I tried your script on GoogleAppMeasurement, it works and removes the Mac Catalyst error, but it gives two new errors:
"Undefined symbol: OBJC_CLASS$_GADMobileAds"
and
"Undefined symbol: OBJC_CLASS$_GADRequest".

Any thoughts on how to fix that? Thanks.

Hi @Phacometer, can you share your Podfile please?

Hi @henrytkirk, I'm trying to figure out a way to unlink that bundle. The problem is it doesn't appear in GoogleSignIn's Build phase. What you could do is maybe when you're going to upload an IPA to the App Store, have Fastlane (or other tool) or manually delete that bundle from your ipa. So export it and then delete this bundle or do so directly in the project. I'm still seeing what it can be done

Hi @fermoya - yes, I'm doing that manually for now. I'm not blocked from submitting anymore. Thanks for trying to fix this issue and providing this script.

Hi @fermoya, here is my Podfile:

load 'remove_unsupported_libraries.rb'
target 'What2Do When Bored' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  pod 'Google-Mobile-Ads-SDK'
	
end

def unsupported_pods
   ['GoogleAppMeasurement']
end
post_install do |installer|
   configure_support_catalyst installer, unsupported_pods
end

Hi @Phacometer,

Unfortunately, this isn't how the script is thought to work. If a framework isn't compatible with MacOS, you need to "unlink" that framework, not a dependency. Otherwise, it won't compile. So it should be:

def unsupported_pods
   ['Google-Mobile-Ads-SDK']
end

This will configure this framework and its dependencies so that they're not link for macOS.

Anyway, I've installed Google-Mobile-Ads-SDK in a sample project, version is 7.58.0, Xcode 11.3.1 (not updated yet, I'm having some issues) and it compiles so you wouldn't need to add this framework to the unsupported_pods list

Hi @fermoya,

I removed Google Mobile Ads SDK from unsupported_pods and updated the pods with pod install --repo-update. However it is giving me the old error building for Mac Catalyst, but linking in object file built for iOS Simulator. How did you manage to compile the Mobile Ads SDK for Mac Catalyst? Am I not installing the latest version?

Hi @henrytkirk,

Good to hear you're not blocked. If you check your project folder, you should have a file called Pod-MyProjectName-resources.sh. You should have an if condition like this:

if [[ "$CONFIGURATION" == "Release" ]]; then
    install_resource "${PODS_ROOT}/GoogleSignIn/Resources/GoogleSignIn.bundle"
fi

You can swap if with this:

if [[ "$CONFIGURATION" == "Release" ]] && [ "$ARCHS" != "x86_64" ]; then
    install_resource "${PODS_ROOT}/GoogleSignIn/Resources/GoogleSignIn.bundle"
fi

This will install the resource in your bundle only if it's not a macOS architecture. That should do the trick. Notice if you run pod install or pod update, this script will be generated again and you'll have to modify the script again. I'll keep digging to see if I can do this automatically from the script.

Hi @Phacometer,

Sorry, you're right it doesn't compile. All in all, the pod you're installing is Google-Mobile-Ads-SDK which has a dependency, GoogleAppMeasurement that's incompatible with macCatalyst. The script needs to be needed with Google-Mobile-Ads-SDK, not its dependency, as it'll unlink this library for macOS. If you pass GoogleAppMeasurement then it'll successfully unlink this framework for macOS but Google-Mobile-Ads-SDK won't compile.

So, Google-Mobile-Ads-SDK needs GoogleAppMeasurement to compile and the latter doesn't compile for macCatalyst. Therefore, Google-Mobile-Ads-SDK is incompatible with macCatalyst. You'll need to feed the script with Google-Mobile-Ads-SDK and use #if !targetEnvironment(macCatalyst) to not import this framework in your file.

Hi @henrytkirk,

I've updated the script to automatically remove bundle resources that could come with the Pod. I've been trying it with GoogleSignIn and worked for me, not included for macOS but yes for iOS. I hope it works.

Best

@fermoya,
I'm getting an error, did you add an argument to the script? I see "pod_names_to_keep" was added.

[!] An error occurred while processing the post-install hook of the Podfile.
wrong number of arguments (given 2, expected 3)
remove_unsupported_libraries.rb:320:in 'configure_support_catalyst'

The way I'm calling the script in my Podfile is as follows:

load 'remove_unsupported_libraries.rb'
def unsupported_pods
  ['Firebase/Analytics', 'GoogleSignIn']
end

post_install do |installer|
  # Remove unsupported pods.
  configure_support_catalyst installer, unsupported_pods
end

Hi @henrytkirk,

That’s right, I added it 2 weeks ago I think. I noticed that dependencies might be shared between pods and I would be wrongly unlinking them if needed for a cross-platform pod.

So the script needs to know the pods you’re installing that support macOS architectures and the pods that don’t support macOS architectures.

Ok, I guess it's not too bad to manage those lists. My project has a lot of targets and pods.

Thanks!

@henrytkirk, let me know if you find any issue. So the last additions are:

• Matching supported and unsupported to determine the dependencies to remove
• Modifying "-resources.sh" and "-frameworks.sh" to skip installation for architecture x86_64

@fermoya,

So far so good - except this CocoaPod fails, and I can't figure out how to resolve:

Firebase Analytics:
https://github.com/CocoaPods/Specs/blob/master/Specs/e/2/1/FirebaseAnalytics/6.5.0/FirebaseAnalytics.podspec.json

ld: in /Users/.../Pods/FirebaseAnalytics/Frameworks/FIRAnalyticsConnector.framework/FIRAnalyticsConnector(FIRAnalyticsConnector_c162b9f6e9dd193ef13757b8d7ebe6f7.o), building for Mac Catalyst, but linking in object file built for iOS Simulator, file '/Users/.../Pods/FirebaseAnalytics/Frameworks/FIRAnalyticsConnector.framework/FIRAnalyticsConnector' for architecture x86_64

Ideas? This used to work before, not sure if it's a change in Firebase or the script.

I wonder if it's this umbrella header:
https://github.com/firebase/firebase-ios-sdk/blob/master/CoreOnly/Sources/Firebase.h

I'll try manually adding the ones I need.

Hi @henrytkirk,

How are you using Firebase pods? I'm using them too and I'm not having that problem. Notice Firebase/Analytics contains pods that aren't compiled for macOS.

@fermoya,

Firebase Analytics isn't supported in Catalyst. I'm also using Auth, Core, Remote Config, etc. It was working fine about two-three weeks ago. Which ones are you using? What does your pod file look like?

def cross_platform_libraries
  [
    'Firebase/Auth',
   'Firebase/Database',
    'Firebase/RemoteConfig'
 ]
end

def ios_only_libraries
  [
    'Firebase/Analytics'
 ]
end

@fermoya,

Still can't get this to work correctly. Keeps failing on FirebaseAnalytics/Frameworks/FIRAnalyticsConnector.framework.

Here is are my supported/unsupported pods so far:

def supported_pods
  ['AFNetworking', 'FBSDKCoreKit', 'Firebase/Auth', 'GTMAppAuth', 'Colours', 'Firebase/RemoteConfig', 'Bolts', 'FBSDKLoginKit']
end
def unsupported_pods
  ['Firebase/Messaging', 'Firebase/Crashlytics', 'Firebase/Analytics', 'GoogleSignIn']
end

Any ideas? Could the script be missing something?

Hi @henrytkirk, can you look up "FIRAnalyticsConnector.framework" in your project and verify is always under "OTHER_LDFLAGS[sdk=iphone*]"?

@fermoya, sorry I'm not familiar with how to identify that. Can you provide some steps?

@fermoya, if you're speaking about the pod .xcconfig, here's the FirebaseAnalytics one:

CONFIGURATION_BUILD_DIR = ${PODS_CONFIGURATION_BUILD_DIR}/FirebaseAnalytics-iOS13.4
FRAMEWORK_SEARCH_PATHS = $(inherited) "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCore-iOS10.0" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseCoreDiagnostics-iOS10.0" "${PODS_CONFIGURATION_BUILD_DIR}/FirebaseInstallations-iOS10.0" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransport-iOS10.0" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleDataTransportCCTSupport-iOS10.0" "${PODS_CONFIGURATION_BUILD_DIR}/GoogleUtilities-1cc9386e" "${PODS_CONFIGURATION_BUILD_DIR}/PromisesObjC-iOS10.0" "${PODS_CONFIGURATION_BUILD_DIR}/nanopb-iOS10.0" "${PODS_ROOT}/FirebaseAnalytics/Frameworks" "${PODS_ROOT}/GoogleAppMeasurement/Frameworks"
GCC_PREPROCESSOR_DEFINITIONS = $(inherited) COCOAPODS=1
HEADER_SEARCH_PATHS = $(inherited) "${PODS_ROOT}/Headers/Public"
OTHER_LDFLAGS = $(inherited) -l"c++" -l"sqlite3" -l"z" -framework "StoreKit"
PODS_BUILD_DIR = ${BUILD_DIR}
PODS_CONFIGURATION_BUILD_DIR = ${PODS_BUILD_DIR}/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)
PODS_ROOT = ${SRCROOT}
PODS_TARGET_SRCROOT = ${PODS_ROOT}/FirebaseAnalytics
PRODUCT_BUNDLE_IDENTIFIER = org.cocoapods.${PRODUCT_NAME:rfc1034identifier}
SKIP_INSTALL = YES
USE_RECURSIVE_SCRIPT_INPUTS_IN_SCRIPT_PHASES = YES

Hi @henrytkirk,

I meant you should see something like this:

OTHER_LDFLAGS[sdk=iphone*] = $(inherited) -ObjC -l"sqlite3" -framework "CoreGraphics" -framework "CoreText" -framework "LocalAuthentication" -framework "StoreKit" -framework "FirebaseAnalytics" -framework "FirebaseCrashlytics" -framework "FirebaseInstanceID" -framework "FirebaseMessaging" -framework "GoogleAppMeasurement" -framework "GoogleSignIn" -framework "FIRAnalyticsConnector" 

In "Pod-YourAppName.debug.xcconfig".

I just created a new project, I'm installing the libraries you mentioned and it building fine, I'm sharing the Podfile below. Notice I'm explicitly using a version for Firebase pods, 6.23.0. This is because Cocoapods was for some reason installing Firebase.h 3.6.0 for me, which is wrong. If you try using 6.24.0 or 6.25.0 you'll find the error:

[!] CocoaPods could not find compatible versions for pod "GoogleAppMeasurement":
  In Podfile:
    Firebase/Analytics (= 6.24.0) was resolved to 6.24.0, which depends on
      Firebase/Core (= 6.24.0) was resolved to 6.24.0, which depends on
        FirebaseAnalytics (= 6.5.0) was resolved to 6.5.0, which depends on
          GoogleAppMeasurement (= 6.5.0)

I guess they'll be looking into this now. The PodFile is this:

load 'remove_ios_only_frameworks.rb'

def supported_pods
  [
  'AFNetworking',
  'FBSDKCoreKit',
  'Firebase/Auth',
  'GTMAppAuth',
  'Colours',
  'Firebase/RemoteConfig',
  'Bolts',
  'FBSDKLoginKit'
  ]
end

def unsupported_pods
  [
  'Firebase/Messaging',
  'Firebase/Crashlytics',
  'Firebase/Analytics',
  'GoogleSignIn'
  ]
end

target 'CollectionViewLayoutExample' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  # Pods for CollectionViewLayoutExample

  pod 'AFNetworking'
  pod 'FBSDKCoreKit'
  pod 'GTMAppAuth'
  pod 'Colours'
  pod 'Bolts'
  pod 'FBSDKLoginKit'
  pod 'Firebase/Messaging', '6.23.0'
  pod 'Firebase/Crashlytics', '6.23.0'
  pod 'Firebase/Analytics', '6.23.0'
  pod 'Firebase/RemoteConfig', '6.23.0'
  pod 'Firebase/Auth', '6.23.0'
  pod 'GoogleSignIn'

end

post_install do |installer|
  configure_support_catalyst installer, supported_pods, unsupported_pods
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 fmdr.ct@gmail.com

@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