xcode 如何用Xcode修改并行编译次数
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how to modify the number of parallel compilation with Xcode
提问by dilig0
How to change the number of parallel compilations when building a C++ project with XCode ?
使用 XCode 构建 C++ 项目时如何更改并行编译的数量？
I am not talking about distributed builds, but on simultaneous compilations of a set of source files from a single project, on a single computer. (currently using Xcode 3.2.4)
我不是在谈论分布式构建，而是在单个计算机上同时编译来自单个项目的一组源文件。（目前使用 Xcode 3.2.4）
Thanks
谢谢
采纳答案by u596219
Adjust the PBXNumberOfParallelBuildSubtasksuser default, for example:
调整PBXNumberOfParallelBuildSubtasks用户默认值，例如：
defaults write com.apple.XCode PBXNumberOfParallelBuildSubtasks 6
回答by Mimika Oh
For Xcode 4 you must set the IDEBuildOperationMaxNumberOfConcurrentCompileTasks user default, for example:
对于 Xcode 4，您必须设置 IDEBuildOperationMaxNumberOfConcurrentCompileTasks 用户默认值，例如：
defaults write com.apple.dt.Xcode IDEBuildOperationMaxNumberOfConcurrentCompileTasks 4
Note the "dt". This won't affect xcodebuild on the command line. To do that, use something like
注意“dt”。这不会影响命令行上的 xcodebuild。为此，请使用类似
xcodebuild -IDEBuildOperationMaxNumberOfConcurrentCompileTasks=4 ...
(See http://lists.apple.com/archives/xcode-users/2011/Apr/msg00403.htmland http://lists.apple.com/archives/xcode-users/2011/Jul//msg00377.html)
（参见http://lists.apple.com/archives/xcode-users/2011/Apr/msg00403.html和http://lists.apple.com/archives/xcode-users/2011/Jul//msg00377.html)
回答by J. Peterson
Just for the record - developers at our site using XCode 4 discovered that parallel compilation gets disabled if McAfee anti-virus is installed. Builds that should finish in 15-20 minutes took nearly five hours until McAfee was removed.
只是为了记录 - 我们站点上使用 XCode 4 的开发人员发现，如果安装了 McAfee 防病毒软件，并行编译将被禁用。应该在 15-20 分钟内完成的构建花了将近五个小时，直到 McAfee 被删除。
回答by rvalue
For command line builds, I've tested the 2011/Jul mailing list postthat Mimika linked, and deployed it on our (Xcode 4.2, on Snow Leopard) build server to save memory like so:
对于命令行构建，我测试了Mimika 链接的2011/Jul 邮件列表帖子，并将其部署在我们的（Xcode 4.2，在雪豹上）构建服务器上以节省内存，如下所示：
defaults write xcodebuild IDEBuildOperationMaxNumberOfConcurrentCompileTasks 1
回答by vonlost
I don't know why it drops from four to two, but I also found that quitting Xcode 6, then in Terminal entering "defaults write xcodebuild IDEBuildOperationMaxNumberOfConcurrentCompileTasks 4" got me back to four when Xcode is restarted.
我不知道为什么它从 4 降到了 2，但我也发现退出 Xcode 6，然后在终端中输入“defaults write xcodebuild IDEBuildOperationMaxNumberOfConcurrentCompileTasks 4”让我在 Xcode 重新启动时回到 4。
