PCH File in Xcode 6

Question

In my previous projects, I can find the .pch file under Supporting Files.

But now in Xcode 6, I couldn't find any .pch file. Any steps should I do to produce this file?

Shame that you've not got an answer to this yet, I've just run across the same issue. Did you ever find an answer? — Darren, Jun 29 '14 at 07:31

emotality · Answer 1 · 2016-07-15T23:22:40.257

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Make new file: ⌘cmd+N
iOS/Mac > Other > PCH File > YourProject-Prefix.pch.
Make sure you display "All" and not "Basic". (Blue buttons)
Project > Build Settings > Search: "Prefix Header".
Under "Apple LLVM 7.0" you will get the Prefix Header key.
Type file directory. e.g: "$(SRCROOT)/$(PROJECT_NAME)/ProjectName-Prefix.pch".
Clean project: ⌘cmd+⇧shift+K
Build project: ⌘cmd+B

edited Jul 15 '16 at 23:22

answered Sep 30 '14 at 16:49

emotality

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I cannot find prefix header in build settings.. How can i add .pch in my project? – Sushil Sharma Nov 03 '14 at 07:43
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Updated the answer with an image. :) – emotality Nov 03 '14 at 14:41
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Thank you! Why to change something that works perfectly? – Richard Topchii Nov 21 '14 at 02:16
@emotality what is the difference between YourProjectName and YourProject, and also when you create the .pch file should I check any checkbox for targets? – Laur Stefan May 07 '15 at 13:39
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Well it depends on your project folder name and the name you gave it for the pch file. YourFolder/YourPch.pch. And I think the target should be your project/app? @LaurStefan – emotality May 08 '15 at 09:08
XCode 7 does not provide the "Prefix Header" option. – nu everest Sep 23 '15 at 16:57
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Yes it does, under "Apple LLVM 7.0 Language" in Build Settings. Just make sure you are viewing All and not Basic, top left corner (blue buttons). (: – emotality Sep 23 '15 at 18:39
doesn't appear to be a preprocessing key for xcode 8.0 – johnrubythecat Sep 10 '16 at 22:37

score 81 · Accepted Answer · answered Jul 27 '14 at 05:05

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Add the pch file which is under Others in File-New...and don't forget to add it to your LLVM6.0 - Language section of Build Settings as Project/whateveryounamedyourpchfile.pch

answered Jul 27 '14 at 05:05

marciokoko

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score 9 · Answer 3 · edited May 23 '17 at 10:31

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Rob Napier's answer at Why isn't ProjectName-Prefix.pch created automatically in Xcode 6? is worth reading. He points out that a PCH file is probably not a good idea, and suggests explicitly including .h files into modules that need them.

edited May 23 '17 at 10:31

Community

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answered Oct 03 '14 at 20:33

Hal Mueller

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while Rob's answer is indeed worth reading, you might also include in your answer that the comments below the answer debate most of what he said. Rob's reputation plays big part of the deal. But one could agree that the answer is subjective, and represents Rob's personal choice not to have a .pch file in his projects. – user1244109 Aug 25 '15 at 22:07

score 6 · Answer 4 · answered Jun 30 '14 at 02:27

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I've found out that with Xcode 6. You need to manually create the PCH File.

File -> New -> File -> iOS -> C and C++ -> PCH File.

answered Jun 30 '14 at 02:27

Lie-An

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in the build setting under prefix.header you just need to type your .pch file name – A_Curious_developer Jul 30 '15 at 10:05

score 2 · Answer 5 · answered Jul 30 '15 at 10:06

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There is a minor error in the answer provided above.Please note that in the build setting under prefix.header you just need to type your .pch file name –

answered Jul 30 '15 at 10:06

A_Curious_developer

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score 1 · Answer 6 · answered Feb 01 '16 at 13:38

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In my case issue was getting ,no input file error

I fixed by Removing .pch file from project and adding again this work for me.hope this help someone.

answered Feb 01 '16 at 13:38

Avijit Nagare

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PCH File in Xcode 6

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