les@spambox:~$ more hula-jabberd
checking hula-config.h usability... yes
checking hula-config.h presence... yes
checking for hula-config.h... yes
checking mdb.h usability... no
checking mdb.h presence... yes
configure: WARNING: mdb.h: present but cannot be compiled
configure: WARNING: mdb.h:     check for missing prerequisite headers?
configure: WARNING: mdb.h: see the Autoconf documentation
configure: WARNING: mdb.h:     section "Present But Cannot Be Compiled"
configure: WARNING: mdb.h: proceeding with the preprocessor's result
configure: WARNING: mdb.h: in the future, the compiler will take precedence
configure: WARNING:     ## ---------------------------------- ##
configure: WARNING:     ## Report this to the jabberd lists.  ##
configure: WARNING:     ## ---------------------------------- ##
checking for mdb.h... yes
checking xpl.h usability... no
checking xpl.h presence... no
checking for xpl.h... no
checking for MDBInit in -lhulamdb... no
configure: error: hula libraries not found