run codesigning in parallel if PARALLEL_CODE_SIGN is set to true

lib/cocoapods/generator/embed_frameworks_script.rb

@@ -34,6 +34,11 @@ module Pod
       # @return [String] The contents of the embed frameworks script.
       #
       def script
+        codesign_bg = ''
+        parallel_codesign = ENV['PARALLEL_CODE_SIGN'] == 'true'
+        if parallel_codesign
+          codesign_bg = ' &'
+        end
         script = <<-SH.strip_heredoc
           #!/bin/sh
           set -e
@@ -96,8 +101,8 @@ module Pod
             if [ -n "${EXPANDED_CODE_SIGN_IDENTITY}" -a "${CODE_SIGNING_REQUIRED}" != "NO" -a "${CODE_SIGNING_ALLOWED}" != "NO" ]; then
               # Use the current code_sign_identitiy
               echo "Code Signing $1 with Identity ${EXPANDED_CODE_SIGN_IDENTITY_NAME}"
-              echo "/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements \\"$1\\""
-              /usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements "$1"
+              echo "/usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements \\"$1\\"#{codesign_bg}"
+              /usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements "$1"#{codesign_bg}
             fi
           }
 
@@ -130,6 +135,7 @@ module Pod
             script << "fi\n"
           end
         end
+        script << "wait\n" unless frameworks_by_config.values.all?(&:empty?) || !parallel_codesign
         script
       end
     end

spec/unit/generator/embed_frameworks_script_spec.rb

@@ -2,23 +2,45 @@ require File.expand_path('../../../spec_helper', __FILE__)
 
 module Pod
   describe Generator::EmbedFrameworksScript do
-    it 'returns the embed frameworks script' do
+    before do
+      ENV.delete('PARALLEL_CODE_SIGN')
       frameworks = {
         'Debug'   => %w(Pods/Loopback.framework Reveal.framework),
         'Release' => %w(CrashlyticsFramework.framework),
       }
-      generator = Pod::Generator::EmbedFrameworksScript.new(frameworks)
-      generator.send(:script).should.include <<-SH.strip_heredoc
+      @generator = Pod::Generator::EmbedFrameworksScript.new(frameworks)
+    end
+    it 'returns the embed frameworks script' do
+      @generator.send(:script).should.include <<-SH.strip_heredoc
         if [[ "$CONFIGURATION" == "Debug" ]]; then
           install_framework "Pods/Loopback.framework"
           install_framework "Reveal.framework"
         fi
       SH
-      generator.send(:script).should.include <<-SH.strip_heredoc
+      @generator.send(:script).should.include <<-SH.strip_heredoc
         if [[ "$CONFIGURATION" == "Release" ]]; then
           install_framework "CrashlyticsFramework.framework"
         fi
       SH
     end
+
+    it 'runs codesigning in the background when PARALLEL_CODE_SIGN is set to true' do
+      ENV['PARALLEL_CODE_SIGN'] = 'true'
+      @generator.send(:script).should.include <<-SH.strip_heredoc
+        /usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements "$1" &
+      SH
+      @generator.send(:script).should.include <<-SH.strip_heredoc
+        wait
+      SH
+    end
+
+    it 'does not run codesigning in the background when PARALLEL_CODE_SIGN is set to true' do
+      @generator.send(:script).should.include <<-SH.strip_heredoc
+        /usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements "$1"
+      SH
+      @generator.send(:script).should.not.include <<-SH.strip_heredoc
+        /usr/bin/codesign --force --sign ${EXPANDED_CODE_SIGN_IDENTITY} ${OTHER_CODE_SIGN_FLAGS} --preserve-metadata=identifier,entitlements "$1" &
+      SH
+    end
   end
 end