Generate a prefix header for each target and remove the files from disk and the project template.

lib/cocoapods/installer.rb

@@ -61,6 +61,19 @@ module Pod
         "#{@definition.lib_name}.bridgesupport"
       end
 
+      # TODO move out
+      def save_prefix_header_as(pathname)
+        pathname.open('w') do |header|
+          header.puts "#ifdef __OBJC__"
+          header.puts "#import #{@podfile.platform == :ios ? '<UIKit/UIKit.h>' : '<Cocoa/Cocoa.h>'}"
+          header.puts "#endif"
+        end
+      end
+
+      def prefix_header_filename
+        "#{@definition.lib_name}-prefix.pch"
+      end
+
       # TODO move xcconfig related code into the xcconfig method, like copy_resources_script and generate_bridge_support.
       def install!
         # First add the target to the project
@@ -86,10 +99,12 @@ module Pod
         end
         xcconfig.merge!('USER_HEADER_SEARCH_PATHS' => user_header_search_paths.sort.uniq.join(" "))
 
-        # Add the xcconfig file to the project and make it the base of the target's configurations.
+        # Add the prefix header and xcconfig files to the project
+        @xcodeproj.files.new('path' => prefix_header_filename)
         xcconfig_file = @xcodeproj.files.new("path" => xcconfig_filename)
         @target.buildConfigurations.each do |config|
           config.baseConfiguration = xcconfig_file
+          config.buildSettings['GCC_PREFIX_HEADER'] = prefix_header_filename
         end
       end
 
@@ -99,6 +114,7 @@ module Pod
           bridge_support_generator.save_as(root + bridge_support_filename)
           copy_resources_script.resources << bridge_support_filename
         end
+        save_prefix_header_as(root + prefix_header_filename)
         copy_resources_script.save_as(root + copy_resources_filename)
       end
     end
@@ -154,9 +170,12 @@ module Pod
       puts "  * Writing Xcode project file to `#{pbxproj}'" if config.verbose?
       xcodeproj.save_as(pbxproj)
 
-      build_specifications.each(&:post_install)
+      # Post install hooks run last!
+      targets.each do |target|
+        target.build_specifications.each { |spec| spec.post_install(target) }
+      end
     end
-    
+
     def configure_project(projpath)
       root = File.dirname(projpath)
       xcworkspace = File.join(root, File.basename(projpath, '.xcodeproj') + '.xcworkspace')

lib/cocoapods/specification.rb

@@ -325,17 +325,18 @@ module Pod
 
     # This is a convenience method which gets called after all pods have been
     # downloaded, installed, and the Xcode project and related files have been
-    # generated. Override this to, for instance, add to the prefix header:
+    # generated. (It receives the Pod::Installer::Target instance for the current
+    # target.) Override this to, for instance, add to the prefix header:
     #
     #   Pod::Spec.new do |s|
-    #     def s.post_install
-    #       prefix_header = config.project_pods_root + 'Pods-Prefix.pch'
+    #     def s.post_install(target)
+    #       prefix_header = config.project_pods_root + target.prefix_header_filename
     #       prefix_header.open('a') do |file|
     #         file.puts(%{#ifdef __OBJC__\n#import "SSToolkitDefines.h"\n#endif})
     #       end
     #     end
     #   end
-    def post_install
+    def post_install(target)
     end
 
   end

lib/cocoapods/xcode/project.rb

@@ -331,7 +331,6 @@ module Pod
           self.buildSettings = {
             'DSTROOT'                      => '/tmp/Pods.dst',
             'GCC_PRECOMPILE_PREFIX_HEADER' => 'YES',
-            'GCC_PREFIX_HEADER'            => 'Pods-Prefix.pch',
             'GCC_VERSION'                  => 'com.apple.compilers.llvm.clang.1_0',
             # The OTHER_LDFLAGS option *has* to be overriden so that it does not
             # use those from the xcconfig (for CocoaPods specifically).

spec/integration_spec.rb

@@ -174,6 +174,7 @@ else
 
         Dir.chdir(config.project_pods_root) do
           puts "\n[!] Compiling static library `Pods'..."
+          #system("xcodebuild -target Pods").should == true
           system("xcodebuild -target Pods > /dev/null 2>&1").should == true
           puts "\n[!] Compiling static library `Pods-debug'..."
           system("xcodebuild -target Pods-debug > /dev/null 2>&1").should == true

spec/unit/xcode/project_spec.rb

@@ -183,7 +183,8 @@ describe "Pod::Xcode::Project" do
         configuration.buildSettings.should == {
           'DSTROOT'                      => '/tmp/Pods.dst',
           'GCC_PRECOMPILE_PREFIX_HEADER' => 'YES',
-          'GCC_PREFIX_HEADER'            => 'Pods-Prefix.pch',
+          # TODO do we need a default?
+          #'GCC_PREFIX_HEADER'            => 'Pods-Prefix.pch',
           'OTHER_LDFLAGS'                => '',
           'GCC_VERSION'                  => 'com.apple.compilers.llvm.clang.1_0',
           'PRODUCT_NAME'                 => '$(TARGET_NAME)',
@@ -322,8 +323,6 @@ describe "Pod::Xcode::Project" do
   it "saves the template with the adjusted project" do
     @template.copy_to(temporary_directory)
     @project.save_as(temporary_directory + 'Pods.xcodeproj')
-    (temporary_directory + 'Pods-Prefix.pch').should.exist
-    (temporary_directory + 'Pods.xcconfig').should.exist
     project_file = (temporary_directory + 'Pods.xcodeproj/project.pbxproj')
     NSDictionary.dictionaryWithContentsOfFile(project_file.to_s).should == @project.to_hash
   end

xcode-project-templates/cocoa-static-library/Pods-Prefix.pch

-//
-// Prefix header for all source files of the 'Pods' target in the 'Pods' project
-//
-
-#ifdef __OBJC__
-    #import <Cocoa/Cocoa.h>
-#endif

xcode-project-templates/cocoa-static-library/Pods.xcconfig

-

xcode-project-templates/cocoa-static-library/Pods.xcodeproj/project.pbxproj

@@ -8,15 +8,12 @@
 
 /* Begin PBXFileReference section */
 		518ACD3E1446050200F6BE80 /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = System/Library/Frameworks/Cocoa.framework; sourceTree = SDKROOT; };
-		518ACD461446050200F6BE80 /* Pods-Prefix.pch */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Pods-Prefix.pch"; sourceTree = "<group>"; };
-		518ACD53144605B400F6BE80 /* Pods.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; path = Pods.xcconfig; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXGroup section */
 		518ACD301446050100F6BE80 = {
 			isa = PBXGroup;
 			children = (
-				518ACD53144605B400F6BE80 /* Pods.xcconfig */,
 				518ACD5B1446449B00F6BE80 /* Pods */,
 				518ACD3D1446050200F6BE80 /* Frameworks */,
 				518ACD3C1446050200F6BE80 /* Products */,
@@ -41,7 +38,6 @@
 		518ACD451446050200F6BE80 /* Supporting Files */ = {
 			isa = PBXGroup;
 			children = (
-				518ACD461446050200F6BE80 /* Pods-Prefix.pch */,
 			);
 			name = "Supporting Files";
 			path = Pods;

xcode-project-templates/cocoa-touch-static-library/Pods-Prefix.pch

-//
-// Prefix header for all source files of the 'Pods' target in the 'Pods' project
-//
-
-#ifdef __OBJC__
-    #import <UIKit/UIKit.h>
-#endif

xcode-project-templates/cocoa-touch-static-library/Pods.xcconfig

-

xcode-project-templates/cocoa-touch-static-library/Pods.xcodeproj/project.pbxproj

@@ -7,16 +7,13 @@
 	objects = {
 
 /* Begin PBXFileReference section */
-		515160D0141EC5D100EBB823 /* Pods.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; path = Pods.xcconfig; sourceTree = "<group>"; };
 		515B0FB8141D52E0001DC3E6 /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
-		515B0FBC141D52E0001DC3E6 /* Pods-Prefix.pch */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "Pods-Prefix.pch"; sourceTree = SOURCE_ROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXGroup section */
 		515B0FAA141D52E0001DC3E6 = {
 			isa = PBXGroup;
 			children = (
-				515160D0141EC5D100EBB823 /* Pods.xcconfig */,
 				515B0FC9141D5FBE001DC3E6 /* Pods */,
 				515B0FB7141D52E0001DC3E6 /* Frameworks */,
 				515B0FB6141D52E0001DC3E6 /* Products */,
@@ -41,7 +38,6 @@
 		515B0FBB141D52E0001DC3E6 /* Supporting Files */ = {
 			isa = PBXGroup;
 			children = (
-				515B0FBC141D52E0001DC3E6 /* Pods-Prefix.pch */,
 			);
 			name = "Supporting Files";
 			path = Pods;