blocks|key|1225825|text|如果您的项目包含pod，那么您还必须为测试项目设置pod配置。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1225826|在文件检查器中选择根项目->项目名称->信息->配置为测试项目设置配置与主项目相同|1225827|📷|atomic|offset|length|1225828|​|1225829|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7d01d9bc5b4298e7cf1284895aaa5762.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|V|8|@]|9|@$G|W|H|X|1|Y]]|A|$]]|$1|I|3|J|5|6|7|Z|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R|S|-4]]]]

If your project includes pod then you've to set the pod configuration for the test project too..

Select Root Project in File inspector -> Project Name -> Info -> Configurations 
Set configuration for your test project same like your main project <a href="https://i.stack.imgur.com/O9WQs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/O9WQs.png" alt="enter image description here"></a>

blocks|key|1384256|text|对于所选方案，您有可能关闭了“查找隐式依赖项”。如果您已更新/安装pod并尝试构建项目，则如果未选中此选项，则很可能会失败。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1384257|📷|atomic|offset|length|1384258|​|1384259|摘自苹果公司的文件：|1384260|1384261|+Parallelize+Build+-此选项允许Xcode通过同时构建彼此不依赖的目标来加快总体构建时间。对于具有许多较小依赖项的项目，这是一种节省时间的方法，可以很容易地并行运行。|blockquote|1384262|1384263|查找隐式依赖项--这是一个非常强大的选项，它允许Xcode解析要成功构建的方案的主要目标需要构建哪些目标。然而，这确实伴随着一些你必须意识到的尖锐的边缘。|1384264|1384265|隐式依赖项情况:您针对应用程序目标链接库，并创建与该库的target.|1384266|Scenario+1的隐式依赖项1:启用了“查找隐式依赖项”。|unordered-list-item|1384267|1384268|-+Result:+The+library+will+get+built+prior+to+building+the+application+target.+The+application+target+will+then+link+against+the+library+and+build+successfully.|code-block|syntax|javascript|1384269|1384270|1384271|方案2:已禁用“查找隐式相关性”。|1384272|1384273|-+Result:+The+library+will+not+get+built+prior+to+building+the+application+target.+The+application+target+fail+to+build.
-+_Fix:+To+ensure+that+the+second+scenario+does+not+happen,+you+must+add+the+necessary+targets+into+the+targets+list+and+order+them+correctly._|1384274|1384275|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/154692de214d4f33292a7b305b03cfc7.png|imageAlt^0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1L|8|@]|9|@$E|1M|F|1N|1|1O]]|A|$]]|$1|G|3|H|5|6|7|1P|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1S|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1U|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1W|8|@]|9|@]|A|$]]|$1|U|3|V|5|W|7|1X|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|10|7|1Z|8|@]|9|@]|A|$11|12]]|$1|13|3|H|5|6|7|20|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|21|8|@]|9|@]|A|$]]|$1|15|3|16|5|W|7|22|8|@]|9|@]|A|$]]|$1|17|3|-4|5|6|7|23|8|@]|9|@]|A|$]]|$1|18|3|19|5|10|7|24|8|@]|9|@]|A|$11|12]]|$1|1A|3|H|5|6|7|25|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|26|8|@]|9|@]|A|$]]]|1C|$1D|$5|1E|1F|1G|A|$1H|1I|1J|-4]]]]

There are chances you have 'Find Implicit Dependencies" turned off for the selected Scheme. If you have updated/installed pods and try to build the project, it will more likely fail if this option is unchecked for the selected Scheme.<a href="https://i.stack.imgur.com/9Z4pH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9Z4pH.png" alt="enter image description here"></a>

From Apple's Document:

<blockquote>
 Parallelize Build – This option allows Xcode to speed up total build time by building targets that do not depend on each other at the same time. This is a time-saver on projects with many smaller dependencies that can easily be run in parallel.
 
 Find Implicit Dependencies – This is a very powerful option that allows Xcode to resolve what targets need to be built for the primary target of the scheme to be built successfully. However, this does come with some sharp edges that you have to be aware of.
 
 <ul>
 <li>Situation: You link a library against your application target and create an implicit dependency to that library’s target.</li>
 <li>Scenario 1: “Find Implicit Dependencies” is enabled.
 
 <ul>
 <li>Result: The library will get built prior to building the application target. The application target will then link against the library and build successfully.</li>
 </ul></li>
 <li>Scenario 2: “Find Implicit Dependencies” is disabled.
 
 <ul>
 <li>Result: The library will not get built prior to building the application target. The application target fail to build.</li>
 <li>Fix: To ensure that the second scenario does not happen, you must add the necessary targets into the targets list and order them correctly.</li>
 </ul></li>
 </ul>
</blockquote>

Good Afternoon

I am trying to implement googles <a href="https://developers.google.com/maps/documentation/ios-sdk/utility/setup" rel="nofollow noreferrer">heatmaps</a> into my map based project.
In this particular project, I get the following errors when trying to build. 

<pre><code> failed to emit precompiled header '/Users/zachwilcox/Library/Developer/Xcode/DerivedData/OddJobs-gbnkfettubuccoheinzfovrqefub/Build/Intermediates.noindex/PrecompiledHeaders/OddJobs-Bridging-Header-swift_3WGH9SNI96Z2-clang_16JN3VASQHE4C.pch' for bridging header '/Users/zachwilcox/Desktop/OddJobs/OddJobs-Bridging-Header.h'
</code></pre>

<a href="https://i.stack.imgur.com/ShMcX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ShMcX.png" alt="Failed to emit precompiled header"></a>

and a follow up that says 

<pre><code> 'Google-Maps-iOS-Utils/GMUHeatmapTileLayer.h' file not found
</code></pre>

<a href="https://i.stack.imgur.com/PfVq5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PfVq5.png" alt=".h file not found"></a>

I'm not sure why this is happening because I created an entirely new project and did the same implementation and it worked perfectly. But when I run it on my existing project I get these two errors. 

I have been researching this problem for a while now and I can't figure out what the problem is. I have the Bridging header set to the .h file. <a href="https://i.stack.imgur.com/zPBbT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zPBbT.png" alt="bridging header"></a>

I have tried most steps that individuals have tried to give with their answers but for some reason, it's not working for my project. Thank you in advance. When reading googles installation guide, it said that all I needed to add was one bridging header file which is the code you see in the image below. When researching it, I have seen that I needed to add a .m file as well however I still get the same error when I do. again, in my dummy project, I don't have the .m file just everything you see below and everything compiles.

failed to emit precompiled header

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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下午好我正在尝试实施谷歌到我的地图为基础的项目。在这个特定的项目中，我在尝试构建时遇到以下错误。  failed to emit precompiled header '/Users/zachwilcox/Library/Developer/Xcode/DerivedData/OddJobs-gbnkfettubucc...

问无法发出预编译头
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