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iosprecompiled-headers

How do I add a precompiled header file to my ios project?


I'm looking to create a precompiled header file, to avoid having to include the same debug and tracking libraries in every header in the project.

I've created a file called -Prefix.pch:

#ifdef __OBJC__
#import "Blah.h"
#import "Blarg.h"
#endif

and added it to the project. Is there anything more I'm supposed to do, or should things just work now (assuming I do a project clean and recompile)?


Solution

  • Set the target's build settings as follows:

    GCC_PRECOMPILE_PREFIX_HEADER=YES
    GCC_PREFIX_HEADER="Prefix.pch"
    

    Note that you can plop these keys in the Build Settings search field, if you prefer to use Xcode's UI for your build settings.