我如何用C链接目标文件？适用于建筑x86_64的＆QUOT未定义的符号与......失败; [英] How do I link object files in C? Fails with "Undefined symbols for architecture x86_64"

问题描述

所以我想尝试使用在我的文件（file2.c中）另一个C（file1.c中）文件中定义的函数。我包括为了做到这一点文件1（file1.h）的标题。

So I'm trying trying to use a function defined in another C (file1.c) file in my file (file2.c). I'm including the header of file1 (file1.h) in order to do this.

不过，我不断收到以下错误，每当我尝试使用gcc来编译我的文件：

However, I keep getting the following error whenever I try to compile my file using gcc:

Undefined symbols for architecture x86_64:
  "_init_filenames", referenced from:
      _run_worker in cc8hoqCM.o
  "_read_list", referenced from:
      _run_worker in cc8hoqCM.o
ld: symbol(s) not found for architecture x86_64

我已经告诉我需要链接对象文件一起才能使用的功能从文件2文件1，但我不知道这意味着什么：（

I've been told I need to "link the object files together" in order to use the functions from file1 in file2, but I have no clue what that means :(

推荐答案

我假设你正在使用 GCC ，简单地链接目标文件做的：

I assume you are using gcc, to simply link object files do:

$ gcc -o output file1.o file2.o

要获得对象的文件，只需使用编译

To get the object-files simply compile using

$ gcc -c file1.c

这会产生file1.o等。

this yields file1.o and so on.

如果您想将文件链接到可执行DO

If you want to link your files to an executable do

$ gcc -o output file1.c file2.c

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