pch

1，File -->new file 选择 ios/mac -->Other -->PCH File 输入pch文件名; 2,选择Project --> Build Settings,然后搜索：Prefix Header在Apple LLVM6.0分组中可以看到Prefix Header ,然后输入YourProjectName/YourProject-Prefix.pch 3,clean工程；Product -->clean; 4,编译项目；Product -->Build; 来源： oschina 链接： https://my.oschina.net/u/936286/blog/342076

I am currently using Xcode 4, and in my .pch file I have this macro: #define localize(s) NSLocalizedString((s), nil) . When I try to use this macro in some .m file, I receive this warning: Implicit declaration of function 'localize' is invalid in C99 . This code compiles without a problem, but how can I fix this so I don't get a warning? I had this problem when I did a global replace of NSLog with DLog. I foolishly included the #define DLog(...) NSLog(... statements, so I ended up with #define DLog(...) DLog(... which caused the warnings, and a linker error. Implicit function declarations are

I want to check the output of the preprocessor for some files. How can I view the preprocessor's output in Xcode? You can choose the "Show the Assistant editor" view in the top right set of buttons in the toolbar. Then, at the top of the right-hand editor you can click the little Related Files button and then either choose Preprocess or Assembly . You can see an example of both the preprocessor output and generated assembly code all side-by-side here: Xcode 4.1 features now "Preprocessor or Assembly Output". All be happy! @whoKnows's excellent and concise answer applies to Xcode 6 users. The

I have a solution with many Visual C++ projects, all using PCH, but some have particular compiler switches turned on for project-specific needs. Most of these projects share the same set of headers in their respective stdafx.h (STL, boost, etc). I'm wondering if it's possible to share PCH between projects, so that instead of compiling every PCH per-project I could maybe have one common PCH that most projects in the solution could just use. It seems possible to specify the location of the PCH as a shared location in the project settings, so I have a hunch this could work. I'm also assuming that

I was recently working on my application messing around in the info.plist section, and since that my application will not run on my test device: file 'project.pch' has been modified since the precompiled header was built Something to note is that the app runs fine in the simulator. Edit: Now I am getting this error instead of the other one: No such file or directory (/Users/Me/Library/Developer/Xcode/DerivedData/MyProject-abcdefghijklmnopqrstuvwxyz/Build/Products/Debug-iphoneos/MyApp./MyApp) How to regenerate the info.plist file? HexAndBugs You could try a deep clean (not the same as Product >

When I build my c++ solution in Visual Studio it complains that the xxxxx.pch file is missing. Is there a setting I am missing to get the pre-compiled headers back? here is the exact error for completeness: Error 1 fatal error C1083: Cannot open precompiled header file: 'Debug\xxxxx.pch': No such file or directory NOTE: Later versions of the IDE may use "pch" rather than "stdafx" in the default names for related files. It may be necessary to substitute pch for stdafx in the instructions below. I apologize. It's not my fault. Right-click on your project in the Solution Explorer. Click

I have seen many developers that add various convenience macros to the Prefix.pch of their iOS projects. What do (or don't) you recommend adding to the iOS Prefix.pch file? What does your Prefix.pch look like? bbum Ewww… don't put macros in a .pch file! A .pch file is, by definition, a project specific precompiled header. It really shouldn't be used beyond the context of the project and it really shouldn't contain anything but #include s and #import s. If you have some macros and such that you want to share between headers, then stick 'em in a header file of their own — Common.h or whatever —