Add TargetInstaller#create_umbrella_header

lib/cocoapods/installer/target_installer.rb

@@ -86,6 +86,31 @@ module Pod
         end
       end
 
+      # Generates a header which ensures that all header files are exported
+      # in the module map
+      #
+      # @yield_param [Generator::UmbrellaHeader]
+      #              yielded once to configure the imports
+      #
+      def create_umbrella_header
+        path = target.umbrella_header_path
+        UI.message "- Generating umbrella header at #{UI.path(path)}" do
+          generator = Generator::UmbrellaHeader.new(target)
+          yield generator if block_given?
+          generator.save_as(path)
+
+          # Add the file to the support group and the native target,
+          # so it will been added to the header build phase
+          file_ref = add_file_to_support_group(path)
+          native_target.add_file_references([file_ref])
+
+          # Make the umbrella header public
+          build_file = native_target.headers_build_phase.build_file(file_ref)
+          build_file.settings ||= {}
+          build_file.settings['ATTRIBUTES'] = ['Public']
+        end
+      end
+
       # Generates a dummy source file for each target so libraries that contain
       # only categories build.
       #

lib/cocoapods/installer/target_installer/aggregate_target_installer.rb

@@ -14,7 +14,10 @@ module Pod
           create_support_files_dir
           create_suport_files_group
           create_xcconfig_file
-          create_info_plist_file if target.requires_framework?
+          if target.requires_framework?
+            create_info_plist_file
+            create_umbrella_header
+          end
           create_target_environment_header
           create_bridge_support_file
           create_copy_resources_script

lib/cocoapods/installer/target_installer/pod_target_installer.rb

@@ -20,7 +20,12 @@ module Pod
           add_files_to_build_phases
           add_resources_bundle_targets
           create_xcconfig_file
-          create_info_plist_file if target.requires_framework?
+          if target.requires_framework?
+            create_info_plist_file
+            create_umbrella_header do |generator|
+              generator.imports += target.file_accessors.map(&:public_headers).flatten.map(&:basename)
+            end
+          end
           create_prefix_header
           create_dummy_source
         end

lib/cocoapods/target.rb

@@ -156,6 +156,15 @@ module Pod
       support_files_dir + "#{label}-Private.xcconfig"
     end
 
+    # @return [Pathname] the absolute path of the header file which contains
+    #         the exported foundation constants with framework version
+    #         information and all headers, which should been exported in the
+    #         module map.
+    #
+    def umbrella_header_path
+      support_files_dir + target_definition.label + "#{product_module_name}.h"
+    end
+
     # @return [Pathname] the absolute path of the header file which contains
     #         the information about the installed pods.
     #