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      Linux ϶¯Ì¬¿âÎļþµÄÀ©Õ¹ÃûΪ".so"£¨Shared Object£©¡£°´ÕÕÔ¼¶¨£¬ËùÓж¯Ì¬¿âÎļþÃûµÄÐÎʽÊÇlibname.so£¨¿ÉÄÜÔÚÃû×ÖÖмÓÈë°æ±¾ºÅ£©¡£ÕâÑù£¬Ï̺߳¯Êý¿â±»³Æ×÷ libthread.so¡£¾²Ì¬¿âµÄÎļþÃûÐÎʽÊÇlibname.a¡£¹²ÏíarchiveµÄÎļþÃûÐÎʽÊÇlibname.sa¡£¹²ÏíarchiveÖ»ÊÇÒ»ÖÖ¹ý¶ÉÐÎʽ£¬°ïÖúÈËÃÇ´Ó¾²Ì¬¿âת±äµ½¶¯Ì¬¿â¡£ ±¾ÎĽöÒÔ¼òµ¥µÄÀý×Ó½éÉܶ¯Ì¬¿âÎļþµÄÉú³ÉºÍÁ´½Ó·½·¨¡£²Ù×÷ϵͳ£ºVM_Red Hat Linux; GCC°æ±¾£º3.2.2-5.
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  1.¿âÎļþÃû£ºmylib.c
  /*lib test */
  #include <stdio.h>
  int my_lib_test (void)
  {
    printf ("\n==lib test!\n");
    return 0;
  }
 2.²âÊÔÎļþÃû£ºtest.c
 #include <stdio.h>
 int main(void)
 {
   my_lib_test();
   return 0;
 }
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 ±àÒë¿âÎļþmylib.c:
 $gcc -shared -o mylib.so mylib.c
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ÆäÖУ¬±àÒëÉú³É¶¯Ì¬¿âµÄÃüÁîΪ£ºgcc (-fpic) -shared -o mylib.so mylib.c -fpic ʹÊä³öµÄ¶ÔÏóÄ£¿éÊǰ´ÕÕ¿ÉÖØ¶¨Î»µØÖ··½Ê½Éú³ÉµÄ¡£ -sharedÖ¸¶¨°Ñ¶ÔÓ¦µÄÔ´ÎļþÉú³É¶ÔÓ¦µÄ¶¯Ì¬Á´½Ó¿âÎļþ¡£
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 ±àÒë²âÊÔÎļþtest.c:
 $ gcc -o test test.c ./mylib.so
³É¹¦±àÒëºó£¬Éú³ÉtestÎļþ£¬ÔËÐÐtest£º $ ./test
  ==lib test!
ÆäÖУ¬gcc -o test test.c ./mylib.soµÄ×îºóÒ»¸ö²ÎÊýÖ¸¶¨ËùÁ´½Ó¿âÎļþµÄÏà¶Ô·¾¶¡££¨Ïà¶Ô·¾¶ºÍ¾ø¶Ô·¾¶Ó¦¸ÃÖªµÀ°É£¿£©
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