21.4.{17,18} configure.in and ldap

[Ben Wing]

Ilya N. Golubev wrote:

>If `eldap.c' line numbers are the same as in upstream 21.4, reference
>to `_ber_pvt_opt_on' are created by *some* of `ldap_set_option' calls.
>Did not try to provide for such an ldap headers.  Would like to see c
>preprocessor output for that build configuration.  What ldap interface
>symbol expands to such a reference?
>
>  
>
>>So it looks like we have to check explicitly for ber_pvt_opt_on in
>>-llber again.
>>    
>>
>
>Or to try to compile and link exactly that code, and see what
>libraries are required.  This is certainly cleaner than explicit
>checks for symbols that are non necessarily for explicit use at all.
>  
>
true, but keep in mind that configure needs to be as defensive as 
possible, and this takes precedence over code cleanliness.