第一个oc程序很简单啊，应该没有问题源代码就是很简单的这种：

1. #import <Foundation/Foundation.h>
   
2. 
   
3. int main()
   
4. {
   
5.     NSLog(@"The first programe !!!!");
   
6.     return  0;
   
7. }

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死活不能链接通过

gongjiahaodeMac:oc Jiahao$ cc -c first.m

gongjiahaodeMac:oc Jiahao$ cc first.o

Undefined symbols for architecture x86_64:

  "_NSLog", referenced from:

      _main in first.o

  "___CFConstantStringClassReference", referenced from:

      CFString in first.o

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

gongjiahaodeMac:oc Jiahao$ cc first.o -v

Apple LLVM version 5.0 (clang-500.2.78) (based on LLVM 3.3svn)

Target: x86_64-apple-darwin13.4.0

Thread model: posix

"/Applications/Xcode 2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -dynamic -arch x86_64 -macosx_version_min 10.9.0 -syslibroot "/Applications/Xcode 2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk" -o a.out first.o -lSystem "/Applications/Xcode 2.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/clang/5.0/lib/darwin/libclang_rt.osx.a"

Undefined symbols for architecture x86_64:

  "_NSLog", referenced from:

      _main in first.o

  "___CFConstantStringClassReference", referenced from:

      CFString in first.o

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

1. 求大神指点迷津，是哪里没有配置好呢？

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终端编译的话这样试试 cc test.m -framework foundation

你链接的时候没加 -framework Foundation  这个指令吧.....

你是来骗经验的 哈

是不是路径的问题

水木清华hm 发表于 2015-1-24 10:09
是不是路径的问题

那你好好排查一下问题所在

水木清华hm 发表于 2015-1-24 10:22
那你好好排查一下问题所在

                                好哒

叫你不认真看视频~:D