Update Podspec to exclude C++ and Obj-C++ from public headers. This prevents Swift from trying to import C++ symbols in the umbrella header, which fixes Swift compatibility.

Author: CooperCorona

GTXiLib.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "GTXiLib"
-  s.version      = "4.3"
+  s.version      = "4.4"
   s.summary      = "iOS Accessibility testing library."
   s.description  = <<-DESC
   iOS Accessibility testing library that works with XCTest based frameworks.
@@ -9,8 +9,16 @@ Pod::Spec.new do |s|
   s.license      = "Apache License 2.0"
   s.author       = "j-sid"
   s.platform     = :ios
-  s.source       = { :git => "https://github.com/google/GTXiLib.git", :tag => "4.3.0" }
+  s.source       = { :git => "https://github.com/google/GTXiLib.git", :tag => "4.4.0" }
   s.source_files = "{Classes,OOPClasses}/**/*.{h,m,swift,mm,cc}"
+  s.public_header_files = "Classes/**/*.h"
+  s.private_header_files = [
+    "Classes/GTXImageRGBAData+GTXOOPAdditions.h",
+    "Classes/GTXToolKit+GTXOOPAdditions.h",
+    "Classes/NSObject+GTXAdditions.h",
+    "Classes/NSString+GTXAdditions.h",
+    "Classes/UIColor+GTXOOPAdditions.h"
+  ]
   s.ios.deployment_target = '9.0'
   s.libraries = 'c++'
   s.dependency 'Protobuf-C++'

README.md

@@ -77,6 +77,16 @@ To add GTXiLib to your project use the xcodeproj file in this project or
 using the xcodeproj file you must also link to the [C++ protobuf library](https://github.com/protocolbuffers/protobuf/tree/master/src) and reference
 headers under "GTXiLib > Build Settings > Header Search Paths".
 
+## CocoaPods and Swift
+GTXiLib supports Swift projects. The installation instructions are almost the same as for Objective-C projects. Your `Podfile` should look like
+```
+use_modular_headers!
+target "NameOfYourProject" do
+  pod "GTXiLib"
+end
+```
+with an optional version specifier for "GTXiLib". Note the `use_modular_headers!` line and the **lack** of `use_frameworks!`. As of [CocoaPods 1.5.0](https://blog.cocoapods.org/CocoaPods-1.5.0/), `use_frameworks!` is no longer required for Swift projects. `use_frameworks!` makes `Protobuf-C++`, which is a dependency of `GTXiLib`, fail to import properly. Thus, you cannot use `use_frameworks!`, which means you must use `use_modular_headers!`. You may also specify `:modular_headers => true` on a per-pod basis. Then, add `import GTXiLib` to your Swift files, and you can use GTXiLib APIs.
+
 ## Incremental Accessibility
 
 GTXiLib APIs support a practical solution for improving accessibility of large