Tobias Kloht:
> First of all, thank you for your great help. It has resolved almost
> all of the errors.
> However, i still get unresolved references to some (not all!) of my
> references to functions of the pbc library.
>
> These are the errors:
> smtp_proto.o: In function `scan_element':
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:24: undefined
> reference to `pbc_malloc'
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:31: undefined
> reference to `pbc_free'
> smtp_proto.o: In function `sign':
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:84: undefined
> reference to `pairing_init_set_buf'
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:95: undefined
> reference to `ib_sys_param_scan'
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:106: undefined
> reference to `pbc_malloc'
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:106: undefined
> reference to `cc_signature_length'
> /usr/local/src/postfix-2.6.11/src/smtp/ibs_sign.c:109: undefined
> reference to `cc_sign'
>
> This looks strange to me because some calls functions in the pbc
> library cause no errors. For example a snippet from my code:
> pairing_init_set_buf(pairing, param, count);
> ib_sys_param_init(sysparam, pairing);
>
> The reference to pairing_init_set_buf() is line 84 from the error
> message. The next line calls a function from pbc as well, but does not
> cause an error.
>
> Have you got an idea how to resolve this issue? Or do think this is
> caused on libpbc's side?
Without knowing the exact command, I can only make random guesses
which I won't do.
OK, just one. You may be giving the libraries in the wrong order.
A library must be specified before its dependencies. If ibs depends
on pbc, specify ibs first.
Wietse
> Again, thanks a lot for your help.
>
> Best regards,
> Tobias
>
> 2011/8/24 Wietse Venema <wie...@porcupine.org>:
> > Tobias Kloht:
> >> My problem is that it will not compile when using make, because there
> >> are all kinds of errors with the librarys i have added, mainly
> >> "undefined references". See the excerpt from make's error messages below.
> >> My program does compile if i do it by hand, but i have to use some gcc
> >> options. For example, when compiling ibs_sign.c i would use: "gcc -
> >> static ibs_sign.c -L. -lpbc -lgmp -lpbc_sig".
> >
> > To add external libraries such as pbc, gmp and pbc_sig that exist
> > outside the Postfix source tree:
> >
> > $ make makefiles "SYSLIBS=-lpbc -lgmp -lpbc_sig"
> > $ make
> >
> > ? ? ? ?Wietse
> >
>
