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objective-cclangmacos-sierra

Compile Objective-C with clang on macOS Sierra

I'm trying to figure out how to compile this snippet of code on macOS Sierra.

#import <Foundation/Foundation.h>

int main() {
    NSLog(@"Hello World");
    return 0;
}

On El Capitan, I could compile with this command.

clang -x objective-c -framework Foundation main.m

However, when I try that command on Sierra, I see these errors.

In file included from main.m:1:
In file included from /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:10:
In file included from /System/Library/Frameworks/Foundation.framework/Headers/NSArray.h:5:
/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:44:12: error: unknown property attribute 'class'
@property (class, readonly) BOOL supportsSecureCoding;

This is the version of clang that I'm using.

$ clang -v
Apple LLVM version 7.3.0 (clang-703.0.31)
Target: x86_64-apple-darwin16.0.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

I have Xcode version 7.3.1 (7D1014) and Xcode version 8.0 beta 4 (8S188o) installed. The version of Sierra I have is 10.12 beta (16A254g).

Note: I want to compile this in the terminal with clang, not inside of Xcode.

Solution

  • Make sure you have the Xcode 8 version of the command-line tools selected.

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