Description of problem:

Building of a number of PDF filters developed by the OPFC project[0] fails
because the poppler development packages do not include the necessary header
files.  These filters are slated for integration in the CUPS PDF workflow.  The
specific filters affected are `pdftopdf` and `pdftoraster`.

We have surveyed the last few releases of a number of major distributions but
the majority of them already include the necessary header files in their poppler
development packages.  Of the ones surveyed, only Fedora 7 and 8 and Red Hat
Enterprise Linux 5 and 5.2 were found lacking.  Fedora 9 already includes the
header files required.  We have not looked at any other RHEL 5.x releases.

The required header files can be added by simply specifying the
--enable-xpdf-header option when configuring the poppler sources.  This will
take care of installing the required header files in the poppler include
directories.

Considering the fact that CUPS is moving to a PDF-based workflow and the LSB
efforts in the printing area[1], we would like to see the poppler development
packages fixed before the next release of RHEL.  FYI, this problem was discussed 
at the Linux Foundation's OpenPrinting Summit in Tokyo[2] as well.

[0] http://sourceforge.jp/projects/opfc
[1] http://openprinting.org/
[2] http://www.linuxfoundation.org/en/OpenPrinting/LFJapanSymposiumTokyoJuly2008