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linuxϾ²Ì¬¿âǶÌ×ʹÓÃ
ǰÌáÊÇÄã»áÔÚlinuxϵ÷Óþ²Ì¬¿âºÍ¶¯Ì¬¿âºÍMakfile±à³Ì(µ±È»²»»áMakfileÖ±½ÓÔÚÖÕ¶ËÃüÁîÒ²³É)
±¾ÀýÊÇÏÈÓÉStringLen.h,StringLen.cÉú³Élibrak.a
È»ºóÀûÓÃStringLen2.h£¬StringLen2.²¢µ÷ÓÃlibrak.aÉú³Élibrak2.a
×îºóÀûÓÃStringLen3.h,StringLen3.cµ÷ÓÃlibrak2.a Éú³Élibrak3.so
--------------------------------------------------------------------------------------
#StringLen.h:
#ifndef _STRINGLEN_H__
#define _STRINGLEN_H__
int Strlen(char *pStr);
#endif
#StringLen.c:
#include<stdio.h>
#include<assert.h>
#include "StringLen.h"
int  Strlen(char  *pStr)
{        
    unsigned  long  ulLength;
    assert(NULL  !=  pStr);
    ulLength  =  0;
    while(*pStr++)
    {                
        ulLength++;
    }
    return  ulLength;
}
gcc -Wall -c *.c
ar rc librak.a *.o
------------------------------------------------------------------------------------
#StringLen2.h:
#ifndef _STRINGLEN_H2__
#define _STRINGLEN_H2__
#ifdef __UDT
#include "StringLen.h"
#endif
int Strlen2(char *pStr);
#endif
#StringLen2.c:
#include<stdio.h>
#include<assert.h>
#include "StringLen2.h"
int  Strlen2(char *pStr)
{        
    unsigned  long  ulLength;
    #ifdef __UDT
    ulLength  =  Strlen(pStr);
    #else
        ulLength = -1;
    #endif
   
    return  ulLength;
}
gcc -Wall -c *.c -D__UDT
ar rc librak2.a *.o
------------------------------------------------------------------------------------


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