objective-c - NSLog 错误 : Can't find 'NXConstantString' ?

Question

我终于让 GNUstep 工作了(在 Windows 上)，它编译并运行良好。但是，每当我尝试使用 NSLog 时，都会出现以下错误:

$ gcc -o hello hello.m -I /GNUstep/System/Library/Headers \
> -L /GNUstep/System/Library/Libraries -lobjc -lgnustep-base
hello.m: In function 'main':
hello.m:4:5: error: cannot find interface declaration for 'NXConstantString'

我的源代码:

#import <Foundation/Foundation.h>

int main(void) {
    NSLog(@"hello world");
}

Answer 1

是——

NSLog(@"hello world");

不是

 NSlog(@"hello world");  // 'l' should be upper case in NSLog

试试这个-

gcc -o hello hello.m -I /usr/lib/GNUstep/System/Library/Headers \
-L /usr/lib/GNUstep/System/Library/Libraries/ -lgnustep-base \
-fconstant-string-class=NSConstantString

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