慢速测试文件编译在Swift 1.2，Xcode 6.3.1 [英] Slow test file compilation in Swift 1.2, Xcode 6.3.1

问题描述

在将项目从Xcode 6.2迁移到6.3.1后，我经历了对swift单元测试文件的慢得多的编译。

I experienced much slower compilation of the swift unit test files after migrating the project from Xcode 6.2 to 6.3.1.

我的单元测试使用Quick / Nimble框架。另外在每个测试文件中我有：

My unit test use Quick/Nimble framework. Also in each test file I have:

import MyApp

有趣的是，当我注释掉导入，编译是闪电般快。我测试了一些虚拟单元测试文件，实际上不使用我的应用程序的任何代码。但是导入对编译时间有很大的影响。

The interesting thing is that when I comment out that import, the compilation is lightning fast. I tested it out on some dummy unit test files, that in fact don't use any of my application's code. But that import makes huge difference for the compilation time.

我没有注意到使用Xcode 6 - 6.2时的巨大影响。现在有什么想法如何提高编译速度？

I didn't observe that big impact when using Xcode 6 - 6.2. Do you have any ideas how to improve the compilation speed now?

推荐答案

根据 http://devforums.apple.com/message/1128702#1128702 。在构建设置中启用整个模块优化会导致问题出现。

According to one of the replies in http://devforums.apple.com/message/1128702#1128702 . Enabling Whole Module Optimization in Build Settings makes the issue walked around.

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