Hi, I made this simple C++ program, but when I try to compile it, gcc returns the followinf error message: gcc -c Connector.cpp gcc -c main.cpp gcc ./*.o -o main.out ./main.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' collect2: ld returned 1 exit status make: *** [main.out] Error 1 What is this undefined reference to `__gxx_personality_v0, and how do I fix it? The following is the code of main.cpp, Connecot.h and Connector.cpp if it may help you to find the problem. Thanks a lot, Andre _________________________________________ main.cpp: #ifndef MAIN # define MAIN # include "main.h" #endif int main( int argc, char *argv[] ) { // char theMessage[ 256 ]; Connector theConnector; // theConnector.connect( "mx1.hotmail.com", 25 ); // theConnector.receiveMessage( theMessage, 255 ); // printf( "%s\n", theMessage ); // theConnector.disconnect; return ( EXIT_SUCESS ); } _________________________________________ Connector.h: #define ERROR -1 #define SUCCESS 0 #ifndef SOCKET # define SOCKET # include <sys/socket.h> #endif #ifndef NETDB # define NETDB # include <netdb.h> #endif #ifndef STRING # define STRING # include <string.h> #endif #ifndef UNISTD # define UNISTD # include <unistd.h> #endif class Connector { public: Connector(){}; ~Connector(){}; int connect( const char * theMailServerName, int thePortNumber ); int sendMessage( const char * theMessage ); int receiveMessage( char * theMessage, int theMessageLength ); int disconnect(); private: int sockfd; }; ________________________________________ Connector.cpp: #ifndef CONNECTOR # define CONNECTOR # include "Connector.h" #endif int Connector::connect( const char * theMailServerName, int thePortNumber ) { struct sockaddr_in theMailServerAddress; struct hostent * theMailServer; sockfd = socket( AF_INET, SOCK_STREAM, 0 ); if( sockfd < 0 ) return( ERROR ); theMailServer = gethostbyname( theMailServerName ); if ( theMailServer == NULL ) return( ERROR ); bzero( ( char *) &theMailServerAddress, sizeof( theMailServerAddress ) ); theMailServerAddress.sin_family = AF_INET; bcopy( ( char *)theMailServer->h_addr, ( char *)&theMailServerAddress.sin_addr.s_addr, theMailServer->h_length ); theMailServerAddress.sin_port = htons( thePortNumber ); return( SUCCESS ); } int Connector::sendMessage( const char * theMessage ) { if( send( sockfd, theMessage, strlen( theMessage ), 0 ) < 0 ) return( ERROR ); return( SUCCESS ); } int Connector::receiveMessage( char * theMessage, int theMessageLength ) { if( recv ( sockfd, theMessage, theMessageLength, 0) < 0 ) return( ERROR ); return( SUCCESS ); } int Connector::disconnect() { if( close( sockfd ) < 0 ) return( ERROR ); return( SUCCESS ); } __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - 100MB free storage! http://promotions.yahoo.com/new_mail