c - 编译具有多个头文件的C程序时出错

Question

这个问题已经有答案了:

What is an undefined reference/unresolved external symbol error and how do I fix it? (39 个回答)

已关闭 6 年前。

我有kmeans_seq.c和bikmeans_seq.c文件。文件bikmeans_seq.c包括两个 header :kmeans_seq.h和bikmeans_seq.h 。当我编译bikmeans_seq.c时使用gcc bikmeans_seq.c -o bikmeans我收到此错误:

Undefined symbols for architecture x86_64:
  "_euclidean_dist", referenced from:
      _points_assignment in bikmeans_seq-5c462b.o
      _partition_clusters in bikmeans_seq-5c462b.o
      _standard_deviation in bikmeans_seq-5c462b.o
  "_find_max", referenced from:
      _standard_deviation in bikmeans_seq-5c462b.o
  "_kmeans", referenced from:
      _main in bikmeans_seq-5c462b.o
      _partition_clusters in bikmeans_seq-5c462b.o
     (maybe you meant: _bisecting_kmeans)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我不确定这个错误是什么。有人可以提示我为什么会收到此错误吗？谢谢。

Answer 1

没有来源有点困难，但试试这个:

gcc -Wall bikmeans_seq.c kmeans_seq.c -o bikmeans

即使这可行，我也建议使用 makefile。

希望这有帮助!