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c++iosxcodecocoapods
Greg
Greg

Reputation: 10788

What do I need to do to get cocoapods to build with C++?

I'm trying to build a library to distribute via Cocoapods. The library is written mainly in Objective C, but includes a few C++ files. None of the C++ headers are part of the library's public API. The library builds fine in Xcode, and I can distribute as a framework, but a pod is probably easier for others to consume, right?

This is my first time attempting to build a cocoapod, so I may be doing something obviously wrong.

When I run pod lib lint or try to build the demo app that depends on the pod, I get error messages that suggest that the build system doesn't understand C++ at all.

in a C++ header file:

class CGuard {
> unknown type name 'class'; did you mean 'Class'?

in another C++ header file:

template<typename T>
class CContexts {
> unknown type name 'template'

My podspec file includes

spec.xcconfig = {
  'CLANG_CXX_LANGUAGE_STANDARD' => 'c++11',
  'CLANG_CXX_LIBRARY' => 'libc++'
}
spec.library = "c++"

What else can I do to tell the build system to use the C++ compiler?

Upvotes: 3

Views: 1040

Answers (1)

Greg
Greg

Reputation: 10788

It looks like the key was adding private_header_files entries to remove the C++ headers from the framework that Cocoapods exports.

Although Cocoapods is documented to only include the files from public_header_files in the generated module umbrella header, it looks like each subspec section has all of its headers included if that subspec section doesn't have its own public_header_files entry.

The C++ files were all compiled in a subspec section to let me use different compiler settings, so the private_header_files entry needed to be inside that subspec section as well.

Upvotes: 1

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