前段时间需要完成多个模块业务，而这些模块的接口都是一样的，于是为了方便管理就把每个模块都根据接口封装成了SO库，这里就留下SO库调用样例

 

SO库源文件代码：

1 //TestSo.c2 #include 
     
      3 4 int CommonInterface(char* str, unsigned int strLen)5 {6     //deal with ...7     printf("%s, %d\n", str, strLen);8     return 1;9 }
     

 

编译命令：

gcc -shared -o TestSo.so TestSo.c

 

使用库代码：

1 //Main.c 2 #include 
      
        3 #include 
       
         4  5 typedef int (*CommonInterface_Func)(char* str, unsigned int strLen); 6  7 #define TEST_SO_FILE "/root/test/libtestSo.so" 8 void* soHandle = NULL; 9 10 /* get dynamic library function address, returns 1 success, otherwise fail. */11 int getCommonInterfaceFuncAddr(CommonInterface_Func* funcAddr)12 {13     // laod dynamic library.14     soHandle = dlopen(TEST_SO_FILE, RTLD_LAZY);15     if ( soHandle == NULL )16     {17         printf("dlopen,(%s)", dlerror());18         return 0;19     }    20     // get func addr21     *funcAddr = (CommonInterface_Func)dlsym(soHandle, "CommonInterface");22     if ( *funcAddr == NULL )23     {24         printf("dlsym,(%s)", dlerror());25         dlclose(m_soHandle);26         return 0;27     }28     return 1;29 }30 31 int main(int argc, char* argv[])32 {33     char* str = "hello so.";34     CommonInterface_Func funcAddr = NULL;35     int result = getCommonInterfaceFuncAddr(&funcAddr);36 37     if (result != 1)38     {39         printf("get func address fail.\n");40         return 0;41     }42     printf("get func address success.\n");43     result = funcAddr(str, strlen(str));44     printf("exec func result : %d\n", result);45     46     return 1;47 }
       
      

 

编译命令：

 gcc -o Main_exec Main.c -ldl

 

 执行：./Main_exec

 

参考链接：http://www.cnblogs.com/leaven/archive/2010/06/11/1756294.html