@import "Unexpected '@' in program"

Question

I updated project to Xcode 5 and enabled modules in build settings. However, I see compiler error Unexpected '@' in program when I use @import.

#ifndef __IPHONE_7_0
#warning "This project uses features only available in iOS SDK 7.0 and later."
#endif

#ifdef __cplusplus
#import <opencv2/opencv.hpp>
#endif

#ifdef __OBJC__
@import SystemConfiguration;
@import UIKit;

Is it anything else that should be done?

add the code where you use @import – Jordan Montel Oct 09 '13 at 13:23 — Jordan Montel, Oct 09 '13 at 13:23

score 64 · Accepted Answer · answered Oct 09 '13 at 13:29

64

From the comment of @hw731 I think you use badly @import :

old syntax to import framework :

#import <UIKit/UIKit.h>

but now, you can use the new syntax :

@import UIKit;

you need to enable theses modules to use the keyword @import (it's enable by default when you create a new project with Xcode 5) :

enter image description here

Have a look here.

answered Oct 09 '13 at 13:29

Jordan Montel

8,227
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No, I use correct @import UIKit; These settings are also set. – Shmidt Oct 09 '13 at 13:48
The problem was that I use workspace, and the second project occasionally lost its module settings. – Shmidt Oct 10 '13 at 09:31
1

This worked for me. I have a project that was started back in iPhone OS 2.0 and this was set to NO. Thanks! – jmurphy Mar 09 '14 at 19:51

score 13 · Answer 2 · answered Feb 20 '14 at 22:25

Got same error, checked the standard places:

Yes, I have correct code syntax
Yes, all the "Apple LLVM 5.0 - Languages - Modules" settings are YES. Both in this project and each its targets.
Yes, I'm using a workspace, but checked that all projects have enabled Modules. Both projects and their each targets.
Yes, checked I don't have any funny "smart" quotes anywhere
Yes, checked that I'm in a header.h or file.m file (not .mm/.c/.cpp/.hpp)

The problem was that the header file was imported into file.mm file, which doesn't seem to support the new @import module syntax! Converted that header back to old style #import format and everything was fine again.

I too have some .mm files for C++ (Protocol Buffers). I converted back to the old syntax with #import in the .pch file. Everything compiles fine now. — subv3rsion, Mar 30 '14 at 14:50

score 5 · Answer 3 · answered Oct 31 '13 at 11:11

5

I also found that using following code in pch file:

#ifdef __cplusplus
#import <opencv2/opencv.hpp>
#endif

are not compatible with @import.

answered Oct 31 '13 at 11:11

Shmidt

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score 0 · Answer 4 · answered Feb 11 '16 at 13:56

0

Same problem when i subclass UIActivity and write property in .m file as

@property(nonatomic, strong)NSArray *activityItems;

fixed by moving this property to .h file.

answered Feb 11 '16 at 13:56

Avijit Nagare

8,482
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@import "Unexpected '@' in program"

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