[users@httpd] How to define constant in apache configuration?

[Alfonsas Stonis]

Hi,

I want to define constant that I will use latter in several places.
Old documentation says that there was Define statement (or similar)

Define myUrl "ldap://localhost";
...
AuthLDAPUrl $myUrl

However, there is nothing in current documentation (I was not able to
find the same or similar module).

Can you tell me how to do it with apache2?

I tried to search on web, but found only dozens of the same question
(no answers). I tried:

SetEnv myUrl "ldap://localhost";
...
AuthLDAPUrl $myUrl

Did not worked too.

Thanks,
Alfas