Problem building qt-x11-free - missing file postgres.h

["Peder Chr. Nørgaard" <pcn@pogt.dk>]

Hello,
	I am trying to hunt a bug in the qt packages and need to build slightly 
modified versions for this purpose.  However, even if

		apt-get build-dep qt-x11-free

shows that all build dependencies are right on my up-to-date "unstable" 
system, I cannot build the packages; they fail with 

g++ -c -pipe -I/usr/include/mysql -I/usr/include/freetype2 -I/usr/include/
postgresql -I/usr/include/postgresql/server -fno-exceptions -Wall -W -O2 
-fPIC  -DQT_NO_DEBUG -DQT_PLUGIN -DQT_SHARED -I/home/pcn/debian_src/
qt-x11-free-3.2.1/mkspecs/linux-g++ -I. -I/usr/include/freetype2 
-I../../../../include -I.moc/release-shared/ -o .obj/qsql_psql.o ../../../../
src/sql/drivers/psql/qsql_psql.cpp
../../../../src/sql/drivers/psql/qsql_psql.cpp:50:22: postgres.h: No such file 
or directory
../../../../src/sql/drivers/psql/qsql_psql.cpp:57:29: catalog/pg_type.h: No 
such file or directory

i.e., the postgres.h file is missing.  For good measure, I have verified, that 
I have installed the entire postgresql suite, not only postgresql-dev.  But 
my system simply does not contain a "postgres.h" file - "locate postgres.h"
only locates two postgres.html files!

Will someone who have succeeded in building the qt-x11-free packages
please locate the postgres.h file and tell me which package it belongs to.

best regards

-- 
Peder Chr. Nørgaard     e-mail: pcn@pogt.dk
Gefionsvej 19           spejder-e-mail: hathi@gallerne.dk
DK-8230 Åbyhøj          tel: +45 87 44 11 99
Denmark                 mob: +45 21 28 66 58