TurboModules: add podspec (#23927)

Summary:
Add's a podspec to allow linking / building turbomodules.

[iOS] [Added] - podspec for turbomodules
Pull Request resolved: https://github.com/facebook/react-native/pull/23927

Reviewed By: mdvacca, RSNara

Differential Revision: D14474598

Pulled By: fkgozali

fbshipit-source-id: afafce0f0af31469a3ef91616575b3b0f36055bc

RNTester/Podfile

@@ -31,6 +31,9 @@ target 'RNTester' do
   pod 'React-jsinspector', :path => '../ReactCommon/jsinspector'
   pod 'yoga', :path => '../ReactCommon/yoga'
 
+  # Uncomment to enable TurboModule
+  # pod 'React-turbomodule-core', :path => '../ReactCommon/turbomodule/core'
+
   # Third party deps podspec link
   pod 'DoubleConversion', :podspec => '../third-party-podspecs/DoubleConversion.podspec'
   pod 'glog', :podspec => '../third-party-podspecs/glog.podspec'

ReactCommon/turbomodule/core/React-turbomodule-core.podspec

@@ -0,0 +1,47 @@
+# coding: utf-8
+# Copyright (c) Facebook, Inc. and its affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+require "json"
+
+package = JSON.parse(File.read(File.join(__dir__, "..", "..", "..", "package.json")))
+version = package['version']
+
+source = { :git => 'https://github.com/facebook/react-native.git' }
+if version == '1000.0.0'
+  # This is an unpublished version, use the latest commit hash of the react-native repo, which we’re presumably in.
+  source[:commit] = `git rev-parse HEAD`.strip
+else
+  source[:tag] = "v#{version}"
+end
+
+folly_compiler_flags = '-DFOLLY_NO_CONFIG -DFOLLY_MOBILE=1 -DFOLLY_USE_LIBCPP=1 -Wno-comma -Wno-shorten-64-to-32'
+folly_version = '2018.10.22.00'
+boost_compiler_flags = '-Wno-documentation'
+
+Pod::Spec.new do |s|
+  s.name                   = "React-turbomodule-core"
+  s.version                = version
+  s.summary                = "-"  # TODO
+  s.homepage               = "http://facebook.github.io/react-native/"
+  s.license                = package["license"]
+  s.author                 = "Facebook, Inc. and its affiliates"
+  s.platforms              = { :ios => "9.0", :tvos => "9.2" }
+  s.source                 = source
+  s.source_files           = "*.{cpp,h}"
+  s.compiler_flags         = folly_compiler_flags + ' ' + boost_compiler_flags
+  s.pod_target_xcconfig    = { "HEADER_SEARCH_PATHS" => "\"$(PODS_ROOT)/boost-for-react-native\" \"$(PODS_ROOT)/Folly\"" }
+  s.header_dir             = "jsireact"
+
+  s.dependency "React-Core", version
+  s.dependency "React-cxxreact", version
+  s.dependency "React-jsi", version
+  s.dependency "Folly", folly_version
+
+  s.subspec "core-ios" do |ss|
+    ss.source_files   = "platform/ios/*.{mm,cpp,h}"
+    ss.header_dir     = "React"
+  end
+end