Trouble buildint php

[Richard Pyne]

I'm having a problem building php that I haven't been able to 
figure out. I'm getting:

checking for libedit readline replacement... no
checking for readline support... yes
checking for tgetent in -lncurses... no
checking for tgetent in -ltermcap... no
checking for readline in -lreadline... no
configure: error: readline library not found
Creating /var/log/lunar/compile/php-4.3.10.bz2
! Problem detected during BUILD


I know libreadline is available because:

# updatedb
# locate libreadline
/lib/libreadline.a
/lib/libreadline.so
/lib/libreadline.so.5
/lib/libreadline.so.5.0


I'm sure that it is something stupid that I am missing, but I 
can't find what.

Thanks in advance for any help.

--Richard