mod_perl installed but not active

[Werner Reisberger]

I compiled succesfully mod_perl together with other modules (see below)
into apache 1.3.12. Unfortunately I cannot activate it. The module isn't
visible in the error log at startup and the insertion of module directives
yields to errors.

I can't understand why a make test into the mod_perl source runs without 
any error.

Thanks for any hints,

 Werner

httpsd -l

Compiled-in modules:
  http_core.c
  mod_env.c
  mod_log_config.c
  mod_mime.c
  mod_negotiation.c
  mod_status.c
  mod_include.c
  mod_autoindex.c
  mod_dir.c
  mod_cgi.c
  mod_asis.c
  mod_imap.c
  mod_actions.c
  mod_userdir.c
  mod_alias.c
  mod_access.c
  mod_auth.c
  mod_setenvif.c
  apache_ssl.c
  mod_perl.c
  mod_frontpage.c
  mod_php3.c
suexec: enabled; valid wrapper /usr/local/apache/bin/suexec