Gcc不包括Object.h

Question

我刚开始做gcc的Objective-C（到目前为止我只使用XCode）。

#include <objc/Object.h> 
@interface Integer : Object 
{ 
int integer; 
} 
- (int) integer; 
-(id) integer: (int) _integer; 
@end 

#import "Integer.h" 
@implementation Integer 
- (int) integer 
{ 
    return integer; 
} 
- (id) integer: (int) _integer 
{ 
    integer = _integer; 
} 
@end 

我也曾经尝试编译的东西，我得到这个：

main.m: In function ‘main’: 
main.m:8: warning: ‘Integer’ may not respond to ‘+new’ 
main.m:8: warning: (Messages without a matching method signature 
main.m:8: warning: will be assumed to return ‘id’ and accept 
main.m:8: warning: ‘...’ as arguments.) 
main.m:8: warning: ‘Integer’ may not respond to ‘+new’ 

在我看来，的Object.h列入没有相当的工作。 我搜索你包括Object.h和得到这个：

find /usr/include/ -name Object.h 
/usr/include//objc/Object.h 

另外，GCC输出暗示编译器是在这条道路其实搜索。

#include "..." search starts here: 
#include <...> search starts here: 
/usr/local/include 
/usr/lib/gcc/i686-apple-darwin10/4.2.1/include 
/usr/include 
/System/Library/Frameworks (framework directory) 
/Library/Frameworks (framework directory) 
End of search list. 
GNU Objective-C version 4.2.1 (Apple Inc. build 5664) (i686-apple-darwin10) 
     compiled by GNU C version 4.2.1 (Apple Inc. build 5664). 
GGC heuristics: --param ggc-min-expand=150 --param ggc-min-heapsize=131072 
Compiler executable checksum: 84137cc00ce86c64ee80a91a006f61ae 
main.m: In function ‘main’: 
main.m:8: warning: ‘Integer’ may not respond to ‘+new’ 
main.m:8: warning: (Messages without a matching method signature 
main.m:8: warning: will be assumed to return ‘id’ and accept 
main.m:8: warning: ‘...’ as arguments.) 
main.m:8: warning: ‘Integer’ may not respond to ‘+new’`\ 

我在忽略什么？

Answer 1

如果gcc找不到Object.h，它会给出一个错误指示。问题在于Apple在Objective-C 2.0中删除了Object（或至少它的接口）的大部分方法。相反，你应该继承NSObject并包含Foundation框架。

Answer 2

如何改变第一行

#include <objc/Object>