Linking error

[kevinkwh]

HI
I'm using Berkeley DB and VC ++.
when i debug my program i got this error.

error C2664: 'strlen' : cannot convert parameter 1 from 'void *' to 'const char *'

from this line
skey->size = (u_int32_t)strl en((skey->data)) + 1;

so i changed this line
skey->size = (u_int32_t)strl en((const char *)(skey->data)) + 1;

it gives me this linking error
Linking...
load.obj : error LNK2001: unresolved external symbol "char * optarg" (?optarg@@3PADA )
load.obj : error LNK2019: unresolved external symbol "int __cdecl getopt(int,char * const *,char const *)" (?getopt@@YAHHP BQADPBD@Z) referenced in function _main


any ideas please,
please explain me with simple examples because I'm newbie !!!


Thanks
Kevin

[Banfa]

getopt is not a standard C library function but rather part of POSIX.

Presumably you are trying to port a program from Unix/Linux/BSD to Windows.

*nix implements POSIX and supports getopt, as well as all the C standard library. Windows does not fully support POSIX but does implement the C standard library, plus its own system libraries.

getopt parses the command line so you will need to write your own command line parsing code.

[kevinkwh]

Thank for you reply.
I'll try to write my own.
:D