I have no idea if what I say is true about the PG distribution by PG people, but
I have noticed than in the rpms of other distros the postgresql-devel rpms do not
include all the .h files necessary to build PG extensions. For instance the
rtree.h and itup.h and gist.h headers are missing. Could you please ensure that
all the headers are taken into account when you write your spec file.
May be also in the tar.gz or tar.bz2 distribution (bz2 is more effective than gz
and available on all platforms) you add a developer file that list all the
required headers, so that package builders know which files to include.
It seems that the rpm distributions will go as:
postgresql
postgresql-docs (user and manager docs)
postgresql-devel (header files and developper docs)
Cheers.
Franck@sopac.org