對使用gcc收到的編譯器錯誤感到困惑

Question

我正在嘗試編譯我正在做的作業，並且遇到錯誤，不確定如何解決。 特別是對於這是我的命令行參數：

gcc HW3.c semaphore.o buffer.c -L. -lst -o test

問題在於semaphor.h文件已提供給我們，因此該類沒有任何內在的錯誤，因此它不應在我認為沒有的地方抱怨。 我也不確定如何調和結構錯誤。 我不是特別精通C。這是錯誤列表：

    In file included from buffer.c:11:
semaphore.h:4: error: expected specifier-qualifier-list before ‘st_cond_t’
In file included from buffer.h:2,
                 from buffer.c:12:
semaphore.h:4: error: expected specifier-qualifier-list before ‘st_cond_t’
semaphore.h:5: error: conflicting types for ‘semaphore’
semaphore.h:5: note: previous declaration of ‘semaphore’ was here
semaphore.h:7: error: conflicting types for ‘down’
semaphore.h:7: note: previous declaration of ‘down’ was here
semaphore.h:8: error: conflicting types for ‘up’
semaphore.h:8: note: previous declaration of ‘up’ was here
semaphore.h:9: error: conflicting types for ‘createSem’
semaphore.h:9: note: previous declaration of ‘createSem’ was here
buffer.c: In function ‘init_buffer’:
buffer.c:20: error: incompatible type for argument 1 of ‘createSem’
semaphore.h:9: note: expected ‘struct semaphore *’ but argument is of type ‘semaphore’
buffer.c:21: error: incompatible types when assigning to type ‘semaphore’ from type ‘void *’
buffer.c:23: error: incompatible type for argument 1 of ‘createSem’
semaphore.h:9: note: expected ‘struct semaphore *’ but argument is of type ‘semaphore’
buffer.c:24: error: incompatible types when assigning to type ‘semaphore’ from type ‘void *’
buffer.c: In function ‘c_deposit’:
buffer.c:38: error: incompatible type for argument 1 of ‘down’
semaphore.h:7: note: expected ‘struct semaphore *’ but argument is of type ‘semaphore’
buffer.c:41: error: incompatible type for argument 1 of ‘up’
semaphore.h:8: note: expected ‘struct semaphore *’ but argument is of type ‘semaphore’
buffer.c: In function ‘c_remove’:
buffer.c:46: error: incompatible type for argument 1 of ‘down’
semaphore.h:7: note: expected ‘struct semaphore *’ but argument is of type ‘semaphore’
buffer.c:49: error: incompatible type for argument 1 of ‘up’
semaphore.h:8: note: expected ‘struct semaphore *’ but argument is of type ‘semaphore’

buffer.c：

#include <stdio.h>
#include <stdlib.h>
#include "semaphore.h"
#include "buffer.h"

buffer *init_buffer(int size)
{

    buffer *new_Buffer;
    new_Buffer=malloc((sizeof(buffer)));

    createSem(new_Buffer->emptyBuffer, size);
    new_Buffer->emptyBuffer=malloc(sizeof(semaphore));

    createSem(new_Buffer->fullBuffer, 0);
    new_Buffer->fullBuffer=malloc(sizeof(semaphore));

    new_Buffer->chars=malloc(sizeof(char)*size);

    new_Buffer->size=size;

    new_Buffer->nextIn=0;
    new_Buffer->nextOut=0;

    return new_Buffer;
}

void c_deposit(buffer *buffer, char c)
{
    down(buffer->emptyBuffer);
    buffer->chars[buffer->nextIn]=c;
    buffer->nextIn=(buffer->nextIn+1)%buffer->size;
    up(buffer->fullBuffer);
}
int c_remove(buffer *buffer)
{
    int c;
    down(buffer->fullBuffer);
    c=buffer->chars[buffer->nextOut];
    buffer->nextOut=(buffer->nextOut+1)%buffer->size;
    up(buffer->emptyBuffer);
    return c;
}

buffer.h：

#include <stdio.h>
#include "semaphore.h"

typedef struct{
    semaphore emptyBuffer;
    semaphore fullBuffer;
    int nextIn;
    int nextOut;
    int size;
    char *chars;
}buffer;

void c_deposit(buffer *buffer, char c);
int c_remove(buffer *buffer);

buffer *init_buffer(int size);

出於良好的考慮，這里也是semaphore.h：

typedef struct
{
  int value;
  st_cond_t sem_queue;
} semaphore;

void down(semaphore *s);
void up(semaphore *s);
void createSem(semaphore *s, int value);

Answer 1

似乎semaphore.h需要這樣做：

#include <st.h>

另外，您兩次包含semaphore.h，這使編譯器感到困惑。

也嘗試將其放在semaphore.h中：

#pragma once    

請參閱： http : //en.wikipedia.org/wiki/Pragma_once