catalog trouble when command is put in a Makefile

Hello all,

I'm new to docbook, so you have my apologies if I make obvious mistakes.

I (try) to use the attached Makefile, but running the check target fails with 
this error output:
bash-2.05b$ make check
xmllint --valid --noout kua1.xml
Resolve: pubID -//OASIS//DTD DocBook XML V4.3//EN sysID 
http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd
Failed to parse catalog "catalog.xml"
Resolve URI http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd
kua1.xml:3: I/O error : failed to load HTTP resource
"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" >
                                                          ^
kua1.xml:4: validity error : Validation failed: no DTD found !
<article  status="draft" >
                         ^
Catalogs cleanup
Free catalog entry
make: *** [check] Error 4
bash-2.05b$


However, when I run the commands manually, it works fine:

bash-2.05b$ export XML_CATALOG_FILES=catalog.xml
bash-2.05b$ export XML_DEBUG_CATALOG=1
bash-2.05b$ xmllint --valid --noout kua1.xml
Resolve: pubID -//OASIS//DTD DocBook XML V4.3//EN sysID 
http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd
16384 Parsing catalog catalog.xml
catalog.xml added to file hash
Found system match http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd
Catalogs cleanup
Free catalog entry -//OASIS//DTD DocBook XML V4.3//EN
Free catalog entry http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd
Free catalog entry docbook.dtd
Free catalog entry catalog.xml
Free catalog entry
bash-2.05b$

What is wrong? make html fails too with the same errors(and runs fins 
manually)

Also: judging from the output and the time it takes to run, it seems to do a 
lookup of the DTD on the oasis server -- what have I done wrong in the 
catalog file(attached)?


I have another question: the generated xhtml files are to be used on a website 
where each file also should have php code. I currently try to achieve this by 
simply putting the php processing instructions in the XSL files but xsltproc 
swallows them(naturally, I guess). I want the resulting html document to 
simply contain the <?php tags. How is this achieved, and is there some 
particular document to read about combining dynamic code nested in XML/XSL 
files?

Thanks in advance,


			Frans