我在HT-IDE里写C程序中包含了<string.h>，编译时出现错误提示如下：
伪指令progma的字符串`SAVE`无效
伪指令progma的字符串`REGPARMS`无效
伪指令progma的字符串`RESTORE`无效
这是为什么呢？如果在UV2里面编译就不会出错。我用HT的IDE为什么就不行？补充：HT-IDE是台湾HOLTEK公司的IDE，有自己的库，只是我要用KEIL C里的<string.h>头文件，应该怎么办。
STRING.H是从KEIL C文件夹中INC子文件夹里找到的，内容如下：
/*--------------------------------------------------------------------------
STRING.H
String functions.
Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc.
All rights reserved.
--------------------------------------------------------------------------*/
#ifndef _SIZE_T
#define _SIZE_T
typedef unsigned int size_t;
#endif
#ifndef NULL
#define NULL ((void *) 0L)
#endif
#pragma SAVE
#pragma REGPARMS
extern char *strcat (char *s1, char *s2);
extern char *strncat (char *s1, char *s2, int n);
extern char strcmp (char *s1, char *s2);
extern char strncmp (char *s1, char *s2, int n);
extern char *strcpy (char *s1, char *s2);
extern char *strncpy (char *s1, char *s2, int n);
extern int strlen (char *);
extern char *strchr (const char *s, char c);
extern int strpos (const char *s, char c);
extern char *strrchr (const char *s, char c);
extern int strrpos (const char *s, char c);
extern int strspn (char *s, char *set);
extern int strcspn (char *s, char *set);
extern char *strpbrk (char *s, char *set);
extern char *strrpbrk (char *s, char *set);
extern char *strstr (char *s, char *sub);
extern char *strtok (char *str, const char *set);
extern char memcmp (void *s1, void *s2, int n);
extern void *memcpy (void *s1, void *s2, int n);
extern void *memchr (void *s, char val, int n);
extern void *memccpy (void *s1, void *s2, char val, int n);
extern void *memmove (void *s1, void *s2, int n);
extern void *memset (void *s, char val, int n);
#pragma RESTORE |
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