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@import "Unexpected '@' in program"

Tags:

ios

ios7

xcode5

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?

like image 275
Shmidt Avatar asked Oct 09 '13 12:10

Shmidt


3 Answers

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.

like image 92
Jordan Montel Avatar answered Nov 08 '22 19:11

Jordan Montel


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.

like image 21
JOM Avatar answered Nov 08 '22 21:11

JOM


I also found that using following code in pch file:

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

are not compatible with @import.

like image 5
Shmidt Avatar answered Nov 08 '22 19:11

Shmidt