building documentation on MacOS X ?

Hi there !

It's time to write documentation, but I have problems building it on MacOS X.
I did "port install docbook-sgml-4.2 openjade" and it seems configure found docbook stuff,
but make html produces a lot of errors I don't  understand. Any idea ?

pg-head@zenbook-2:~/postgresql$ make html
make -C doc html
make -C src html
make -C sgml html
{ \
       echo "<!ENTITY version \"9.4devel\">"; \
       echo "<!ENTITY majorversion \"9.4\">"; \
     } > version.sgml
'/opt/local/bin/perl' ./mk_feature_tables.pl YES ../../../src/backend/catalog/sql_feature_packages.txt
../../../src/backend/catalog/sql_features.txt> features-supported.sgml 
'/opt/local/bin/perl' ./mk_feature_tables.pl NO ../../../src/backend/catalog/sql_feature_packages.txt
../../../src/backend/catalog/sql_features.txt> features-unsupported.sgml 
'/opt/local/bin/perl' ./generate-errcodes-table.pl ../../../src/backend/utils/errcodes.txt > errcodes-table.sgml
openjade  -wall -wno-unused-param -wno-empty -wfully-tagged -D . -D .  -d stylesheet.dsl -t sgml -i output-html -V
html-indexpostgres.sgml 
openjade:postgres.sgml:3:55:W: cannot generate system identifier for public text "-//OASIS//DTD DocBook V4.2//EN"
openjade:postgres.sgml:12:0:E: reference to entity "BOOK" for which no system identifier could be generated
openjade:postgres.sgml:3:0: entity was defined here
openjade:postgres.sgml:12:0:E: DTD did not contain element declaration for document type name
openjade:postgres.sgml:14:9:E: there is no attribute "ID"
openjade:postgres.sgml:14:19:E: element "BOOK" undefined
openjade:postgres.sgml:15:7:E: element "TITLE" undefined
openjade:postgres.sgml:17:10:E: element "BOOKINFO" undefined
openjade:postgres.sgml:18:13:E: element "CORPAUTHOR" undefined
openjade:postgres.sgml:19:14:E: element "PRODUCTNAME" undefined
openjade:postgres.sgml:20:16:E: element "PRODUCTNUMBER" undefined
openjade:legal.sgml:3:5:E: element "DATE" undefined

..................................................................
     Regards,
         Oleg
_____________________________________________________________
Oleg Bartunov, Research Scientist, Head of AstroNet (www.astronet.ru),
Sternberg Astronomical Institute, Moscow University, Russia
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(495)939-16-83, +007(495)939-23-83