PHP-CVS + Postgres error

I'm trying to compile php from cvs with psotgres support on a Redhat 6.2 machine but I'm getting the error: make[3]: Entering directory `/home/bart/php4/ext/pgsql' gcc -I. -I/home/bart/php4/ext/pgsql -I/home/bart/php4/main -I/home/bart/php4 -I/home/bart/php4/Zend -I/home/bart/php4/ext/mysql/libmysql -I/home/bart/php4/ext/xml/expat/xmltok -I/home/bart/php4/ext/xml/expat/xmlparse -I/home/bart/php4/TSRM -I/usr/include/pgsql -DSUPPORT_UTF8 -DXML_BYTE_ORDER=12 -g -O2 -c pgsql.c && touch pgsql.lo pgsql.c: In function `_rollback_transactions': pgsql.c:165: void value not ignored as it ought to be make[3]: *** [pgsql.lo] Error 1 make[3]: Leaving directory `/home/bart/php4/ext/pgsql' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/bart/php4/ext/pgsql' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/bart/php4/ext' make: *** [all-recursive] Error 1 Someone have a solution to this? I need the cvs version for use with php-gtk, but can't get postgress support :(