Cocoapods: Could not build Objective-C module 'Sensa_Shared'

[YMonnier]

Report

Error when building my private pod.

<module-includes>:2:9: note: in file included from <module-includes>:2:
#import "Headers/Sensa_Shared-Swift.h"
        ^
/Users/Ysee/Library/Developer/Xcode/DerivedData/Sensa-Shared-ehkhrlhslibfzudxnrvcfrviclrv/Build/Products/Debug-iphoneos/Sensa-Shared/Sensa_Shared.framework/Headers/Sensa_Shared-Swift.h:175:9: error: 'Sensa_Shared/Sensa_Shared.h' file not found
#import <Sensa_Shared/Sensa_Shared.h>
        ^
<unknown>:0: error: could not build Objective-C module 'Sensa_Shared'

What did you do?

pod install

Analyzing dependencies
Fetching podspec for `Sensa-Model` from `../../Sensa-Model`
Fetching podspec for `Sensa-Network` from `../../Sensa-Network`
Fetching podspec for `Sensa-Shared` from `../`
Fetching podspec for `Sensa-Stylesheet` from `../../Sensa-Stylesheet`
Downloading dependencies
Using Alamofire (4.8.0)
Using AsyncSwift (2.0.4)
Using FBSnapshotTestCase (2.1.4)
Using Freddy (3.0.3)
Using Hero (1.4.0)
Using Moya (10.0.2)
Using Nimble (7.3.1)
Using Nimble-Snapshots (6.3.0)
Using ObjcExceptionBridging (1.0.1)
Using Quick (1.3.2)
Using ReachabilitySwift (4.3.0)
Using Realm (3.11.1)
Using RealmSwift (3.11.1)
Using Result (3.2.4)
Using SSZipArchive (2.1.1)
Using Sensa-Model (1.0.46)
Using Sensa-Network (1.0.18)
Using Sensa-Shared (1.0.13)
Using Sensa-Stylesheet (1.0.6)
Using SideMenuController (0.2.4)
Using SlackTextViewController (1.9.6)
Using SnapKit (4.0.0)
Using SwiftMsgPack (1.0.0)
Using XCGLogger (6.1.0)
Generating Pods project
libs SideMenuController to Swift 3.2
libs SideMenuController to Swift 3.2
Integrating client project
Sending stats
Pod installation complete! There are 8 dependencies from the Podfile and 24 total pods installed.

What did you expect to happen?

I expect my project to build perfectly...

What happened instead?

I got a build error:

<module-includes>:2:9: note: in file included from <module-includes>:2:
#import "Headers/Sensa_Shared-Swift.h"
        ^
/Users/Ysee/Library/Developer/Xcode/DerivedData/Sensa-Shared-ehkhrlhslibfzudxnrvcfrviclrv/Build/Products/Debug-iphoneos/Sensa-Shared/Sensa_Shared.framework/Headers/Sensa_Shared-Swift.h:175:9: error: 'Sensa_Shared/Sensa_Shared.h' file not found
#import <Sensa_Shared/Sensa_Shared.h>
        ^
<unknown>:0: error: could not build Objective-C module 'Sensa_Shared'

CocoaPods Environment

Stack

   CocoaPods : 1.5.3
        Ruby : ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-darwin16]
    RubyGems : 2.7.4
        Host : Mac OS X 10.13.6 (17G65)
       Xcode : 10.1 (10B61)
         Git : git version 2.17.2 (Apple Git-113)
Ruby lib dir : /usr/local/Cellar/ruby/2.5.0/lib
Repositories : artsy - https://github.com/artsy/Specs @ 520ae771e36cea8775ddb273dea4225b68b6e3aa
               list-sensa-ios-specs - https://git.list.lu/sensa/iOS-Specs.git @ f96700b5c734253fe45a9386132b83de85a12c8c
               master - https://github.com/CocoaPods/Specs.git @ 8213b169a2ef310ff0dba9cea4f715ed29cdda01
               Sensa-Model - [email protected]:sensa/iOS-Specs.git @ f96700b5c734253fe45a9386132b83de85a12c8c
               Sensa-Network - [email protected]:sensa/iOS-Specs.git @ f96700b5c734253fe45a9386132b83de85a12c8c
               Sensa-Shared - [email protected]:sensa/iOS-Specs.git @ f96700b5c734253fe45a9386132b83de85a12c8c

Installation Source

Executable Path: /usr/local/bin/pod

Plugins

cocoapods-deintegrate : 1.0.2
cocoapods-plugins     : 1.0.0
cocoapods-search      : 1.0.0
cocoapods-stats       : 1.0.0
cocoapods-trunk       : 1.3.0
cocoapods-try         : 1.1.0

Podfile

source 'https://git.list.lu/sensa/iOS-Specs.git'
source 'https://github.com/CocoaPods/Specs.git'

use_frameworks!

target 'Sensa-Shared_Example' do
  pod 'Sensa-Shared', :path => '../'
  pod 'Sensa-Network', :path => '../../Sensa-Network'
  pod 'Sensa-Model', :path => '../../Sensa-Model'
  pod 'Sensa-Stylesheet', :path => '../../Sensa-Stylesheet'
  target 'Sensa-Shared_Tests' do
    inherit! :search_paths

    pod 'Quick', '~> 1.3.1'
    pod 'Nimble', '~> 7.3.0'
    pod 'FBSnapshotTestCase' , '~> 2.1.4'
    pod 'Nimble-Snapshots' , '~> 6.3.0'
  end
end

libs = ['SideMenuController']

post_install do |installer|
    installer.pods_project.targets.each do |target|
        target.build_configurations.each do |config|
            if libs.include? target.to_s
                puts "libs #{target} to Swift 3.2"
                config.build_settings['SWIFT_VERSION'] = '3.2'
                #else
                #puts "libs #{target} to Swift 4.0"
                #config.build_settings['SWIFT_VERSION'] = '4.0'
            end
        end

    end

end

Podspec

#
# Be sure to run `pod lib lint Sensa-Shared.podspec' to ensure this is a
# valid spec before submitting.
#
# Any lines starting with a # are optional, but their use is encouraged
# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html
#

Pod::Spec.new do |s|
  s.name             = 'Sensa-Shared'
  s.version          = '1.0.13'
  s.summary          = 'A short description of Sensa-Shared.'

  s.description      = <<-DESC
TODO: Add long description of the pod here.
                       DESC

  s.homepage         = 'https://lu.sample_project'
  s.license          = { :type => 'MIT', :file => 'LICENSE' }
  s.author           = { 'YMonnier' => '[email protected]' }
  s.source           = { :git => 'https://git.sample.lu/sample_project.git', :tag => s.version.to_s }
  # s.social_media_url = 'https://twitter.com/<TWITTER_USERNAME>'

  s.ios.deployment_target = '9.0'

  s.source_files = 'Sensa-Shared/Classes/**/*'
  s.pod_target_xcconfig = { 'SWIFT_VERSION' => '4.0' }

  var_resources = ['Sensa-Shared/Classes/**/*.xib']
  s.resource_bundle = {
    'Sensa-Shared' => var_resources
  }

  s.ios.vendored_frameworks = ['Sensa-Shared/Classes/Frameworks/SKMaps.framework']
  s.pod_target_xcconfig = { 'OTHER_LDFLAGS' => ['-lObjC'] }

  # Linked libs
  s.dependency 'Sensa-Network', '~> 1'
  s.dependency 'Sensa-Stylesheet', '~> 1'
  s.dependency 'SnapKit', '4.0.0'
  s.dependency 'SlackTextViewController', '1.9.6'
  s.dependency 'SideMenuController', '0.2.4'
  #s.dependency 'ScoutMaps-iOS-SDK', '~> 3.0.3'
  s.dependency 'SSZipArchive', '2.1.1'
  s.dependency 'Hero', '1.4.0'
end

[amorde]

Can you try adding Sensa_Shared.h to the public_header_files attribute in your Podspec?

[YMonnier]

@amorde still the same issue by adding:

  s.public_header_files = 'Sensa-Shared/Classes/Sensa_Shared.h'

or

  s.public_header_files = 'Sensa-Shared/Sensa_Shared.h'

or

  s.public_header_files = 'Sensa_Shared.h'

Moreover, the Sensa_Shared.h file does not exist on my workspace development.

[amorde]

Ah gotcha. It looks like you're building a mixed Swift & Objective-C pod - if that's the case, Xcode will try to import <Sensa-Shared/Sensa_Shared.h> within the generated -Swift.h header. You'll need to create the header manually and add imports for the Objective-C classes that you want to expose to Swift.

CocoaPods generates an umbrella header automatically and imports it within the .modulemap, but Xcode doesn't use that when generating the -Swift.h header

[YMonnier]

@amorde thanks, it works now!

[amorde]

Awesome!

[qalandarov]

@YMonnier, can you please elaborate on how you fixed it? I'm encountering a similar issue and can't wrap my head around it.

[coreypett]

Aye, can we get an elaboration on how this was resolved?

I created a file similar to Sensa_Shared.h to import objc header files used in Swift. However, my Example pods project starts throwing duplicate symbol errors. Which I wouldn't mind if this fixed the pod lib lint from failing.

But I am still receiving the <unknown>:0: error: could not build Objective-C module 'My_Pod'for my private pod

[amorde]

Can you open another issue with a sample that reproduces it? It’s difficult to troubleshoot these kind of issues based on basic info. The approach mentioned in my comment should work