no umbrella header found for target, module map will not be generated

Question

When I trying build CKCountdownButton as a framework in Xcode 6.3, it complains with

warning: no umbrella header found for target \'CKCountdownButton\', mod

Answer 1

That target needs to have at least 1 Swift file. Check that you have Swift files added to the target

Answer 2

Add a CKCountdownButton.h in framework fixed this issue.

I think the umbrella header means the header file with same name like Framework

Answer 3

Custom module map for a framework[About]

Create an umbrella file - any .h file (or autogenerated <product_name>.h for Framework target)

Add all .h files that will be open for consumer into umbrella file

#import "header_1.h"
#import "header_2.h"

Add the umbrella file and headers files .h from it (header_1.h, header_2.h) to the Headers section[can not do it] [public target membership]

Select `.h` file -> Select File Inspectors Tab -> Target Membership -> Select the target and make it **public**
//or
Project editor -> select a target -> Build Phases -> Headers -> add files to the **public** zone

Create a .modulemap file

framework module product_name {
    umbrella header "<umbrella_name>.h"
    export *
}

Check Defines Module

Build Settings -> Defines Module -> YES

Specify Module Map File

Build Settings -> Module Map File -> relative path to `.modulemap` file 

Answer 4

I found another solution, Xcode provides a way to specify umbrella header through Module Map File configuration.

The contents of module.modulemap should be:

framework module Foo {
    umbrella header "Bar.h"

    header "other-header.h"

    export *
    module * { export * }
}

Answer 5

I had the same problem with 'GoogleToolbox'. It happened when I tried to update my pod repo and some error happened. Just did 'pod install' from terminal on the project folder and everything got ok.