Question

I read all of Microsoft’s documentation but their claim is that it should work without any additional libs. An hour of Googling yielded no results. My code:

#include <windows.h>
#include <ras.h>

int main()
{
    char* szPhoneNumberToDial = "127.0.0.1";
    char* szUserName = "test";
    char* szPassword = "test";
    RASDIALPARAMS rdParams;
    rdParams.dwSize = sizeof(RASDIALPARAMS);
    rdParams.szEntryName[0] = '\0';
    lstrcpy(rdParams.szPhoneNumber, szPhoneNumberToDial);
    rdParams.szCallbackNumber[0] = '\0';
    lstrcpy( rdParams.szUserName, szUserName );
    lstrcpy( rdParams.szPassword, szPassword );
    rdParams.szDomain[0] = '\0';

    HRASCONN hRasConn = NULL;
    DWORD dwRet = RasDial(NULL, NULL, &rdParams, 0L, NULL, &hRasConn);
}

Error:

undefined reference to 'RasDialA@24'

I tried both a C and C++ implementation (in both VC++ 2010 and MinGW/gcc & g++) but they both resulted in this same error.

Any ideas?

Answer 1

according documentation, the requirements to RasDial() usage, also Ras.h
header, is the Rasapi32.lib library. If this is avaliable on your compiler, pass it to link by using -l option on

gcc:

gcc foo.c -lRasapi32

EDIT: Thanks to @Mark Wilkins, that has provided the command-line for

Microsoft Compiler:

cl foo.c rasapi32.lib