commit 66e100619327231b2a1ae5d28c318b44ec670f55
author Chinmay Garde <chinmaygarde@google.com> Fri Mar 25 15:36:45 2016 -0700
committer Chinmay Garde <chinmaygarde@google.com> Fri Mar 25 15:36:45 2016 -0700
tree 74241a4567bcb0597f229d015fb35acecb41e8f7
parent 3f9dcfe144a769597099755b17281d622aab8775

Xcodebuild takes an extra parameter for the build directory.

packages/flutter_tools/lib/src/ios/mac.dart

diff --git a/packages/flutter_tools/lib/src/ios/mac.dart b/packages/flutter_tools/lib/src/ios/mac.dart
index fd1db37..3745bc5 100644
--- a/packages/flutter_tools/lib/src/ios/mac.dart
+++ b/packages/flutter_tools/lib/src/ios/mac.dart
@@ -89,7 +89,8 @@
   return false;
 }
 
-Future<bool> buildIOSXcodeProject(ApplicationPackage app, { bool buildForDevice }) async {
+Future<bool> buildIOSXcodeProject(ApplicationPackage app,
+    { bool buildForDevice, Directory buildDirectory }) async {
   String flutterProjectPath = Directory.current.path;
 
   if (xcodeProjectRequiresUpdate()) {
@@ -114,9 +115,23 @@
   await _addServicesToBundle(new Directory(app.localPath));
 
   List<String> commands = <String>[
-    '/usr/bin/env', 'xcrun', 'xcodebuild', '-target', 'Runner', '-configuration', 'Release'
+    '/usr/bin/env',
+    'xcrun',
+    'xcodebuild',
+    '-target', 'Runner',
+    '-configuration', 'Release',
+    'ONLY_ACTIVE_ARCH=YES',
   ];
 
+  if (buildDirectory != null) {
+    if (!buildDirectory.existsSync()) {
+      printError('The specified build directory ${buildDirectory.path} does not exist');
+      return false;
+    }
+
+    commands.add('TARGET_BUILD_DIR=${buildDirectory.absolute.path}');
+  }
+
   if (buildForDevice) {
     commands.addAll(<String>['-sdk', 'iphoneos', '-arch', 'arm64']);
   } else {