Linux下动态库的使用

 

reader.cpp //This cpp build libreader.so, use tt.so

#include <dlfcn.h>

typedef int( *Fun_OpenReader)( int ReaderType, char *DeviceID, char *Password );

int *g_hModule;
Fun_OpenReader libOpen = NULL;

g_hModule = (int *)dlopen( "./tt.so", 1 ); //load dll (tt.so: others )
libOpen = (Fun_OpenReader)dlsym( g_hModule, "OpenReader" ); //func address
dlclose( g_hModule ); //free dll

g++ reader.cpp -o libreader.so -fpic -shared

 

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test.cpp  //this cpp use libreader.so

g++ test.cpp -o a.out -ldl