Problem with database package

[Santiago Higuera]

Hi all:
I'm trying to install database package. My OS is Ubuntu 15.10. I have
installed Postgresql and liboctave-dev. I have struct package installed
in Octave. When I execute 'pkg install -forge database' the result is:
 
>> pkg install -forge database
configure: error: unable to find the PQconnectdb() function in pq
checking for mkoctfile... /usr/bin/mkoctfile
checking for octave-config... /usr/bin/octave-config
checking for pg_config... pg_config
checking for gawk... gawk
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for PQconnectdb in -lpq... no

pkg: error running the configure script for database.
error: called from 'configure_make' in file
/usr/share/octave/4.0.0/m/pkg/private/configure_make.m near line 79,
column 9

¿Can you help me? Thanks

Regards

Santiago Higuera