I've mostly figured out how to port Beejs guide to windows.
I'm trying out the "Gethostbyname" lookup program. And I keep getting linker errors saying,
Undefined reference to "herror"
My source code is as follows, and I'm linking to libwsock32.a
I'm compiling in Dev-C++ 4.9.8.0
Code:#include <stdio.h>
#include <stdlib.h>
#include <winsock.h>
#include <errno.h>
int main(int argc, char *argv[])
{
WSADATA wsaData; // if this doesn’t work
//WSAData wsaData; // then try this instead
if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0)
{
fprintf(stderr, "WSAStartup failed.\n");
exit(1);
}
struct hostent *h;
if (argc != 2)
{ // error check the command line
fprintf(stderr,"usage: getip address\n");
exit(1);
}
if ((h=gethostbyname(argv[1])) == NULL)
{ // get the host info
herror("gethostbyname");
exit(1);
}
WSACleanup();
printf("Host name : %s\n", h->h_name);
printf("IP Address : %s\n", inet_ntoa(*((struct in_addr *)h->h_addr)));
system("PAUSE");
return 0;
}
Thank you for the help
Michael
PS: If I comment out the line refering to herror, it compiles and runs fine....
