C 编译:collect2:错误:ld 返回 1 个退出状态 [英] C compile : collect2: error: ld returned 1 exit status

问题描述

我试图在网上搜索那个错误，但所有的帖子都是针对 C++ 的.

I tried to search for that bug online but all the posts are for C++.

这是消息:

test1.o: In function `ReadDictionary':
/home/johnny/Desktop/haggai/test1.c:13: undefined reference to `CreateDictionary'
collect2: error: ld returned 1 exit status
make: *** [test1] Error 1

代码超级简单，看不懂是什么问题

super simple code and can't understand what's the problem

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dict.h"
#include "hash.h"


pHash ReadDictionary() {
    /* This function reads a dictionary line by line from the standard input. */
    pHash dictionary;
    char entryLine[100] = "";
    char *word, *translation;

    dictionary = CreateDictionary();
    while (scanf("%s", entryLine) == 1) { // Not EOF
        word = strtok(entryLine, "=");
        translation = strtok(NULL, "=");
        AddTranslation(dictionary, word, translation);
    }
    return dictionary;
}

int main() {
    pHash dicti;
...

现在这是标题 dict.h

now this is the header dict.h

#ifndef _DICT_H_
#define _DICT_H_

#include "hash.h"

pHash CreateDictionary();
...

#endif

这里是 dict.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "hash.h"
#include "dict.h"


pHash CreateDectionary()
{
    pHash newDict;
    newDict= HashCreate(650, HashWord, PrintEntry, CompareWords, GetEntryKey, DestroyEntry);
    return newDict;
}

如果你想检查 hash.h

and if you wanna check hash.h

#ifndef _HASH_H_
#define _HASH_H_

//type defintions//
typedef enum {FAIL = 0, SUCCESS} Result;
typedef enum {SAME = 0, DIFFERENT} CompResult;

typedef struct _Hash Hash, *pHash;

typedef void* pElement;
typedef void* pKey;

//function types//
typedef int (*HashFunc) (pKey key, int size);
typedef Result (*PrintFunc) (pElement element);
typedef CompResult (*CompareFunc) (pKey key1, pKey key2);
typedef pKey (*GetKeyFunc) (pElement element);
typedef void (*DestroyFunc)(pElement element);
...

//interface functions//

#endif

如果我把文件给你，也许会更容易些?

Maybe it will be easier if I give you the files here?

无论如何，我很乐意提供有关如何理解问题的提示

Any way, I will be happy for tips on how to understand the problem

推荐答案

你的问题是函数 CreateDectionary(). 你应该把它改成 CreateDi词典().collect2: error: ld returns 1 exit status 在 C 和 C++ 中都是相同的问题，通常意味着您有未解析的符号.在你的情况下是我之前提到的错字.

Your problem is the typo in the function CreateDectionary().You should change it to CreateDictionary(). collect2: error: ld returned 1 exit status is the same problem in both C and C++, usually it means that you have unresolved symbols. In your case is the typo that i mentioned before.

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