GSXML - read unknown type error and include problems

[e.sammer]

There seems to be a problem with GS base and the libxml test as well as
the GSXML classes. Basically, when running configure with the proper
options the libxml test fails with the following:

-- except from config.log --

configure:11501: gcc -o conftest -g -O2 -I/usr/local/include/libxml2
-fgnu-runtime -I/opt/gnustep/System/He
aders  -L/opt/gnustep/System/Libraries/gnu-gnu-gnu
-L/opt/gnustep/System/Libraries conftest.c -L/usr/local/l
ib -lxml2 -lz -lpthread -lm  -lz -lcallback -lavcall >&5
configure:11428:24: xmlversion.h: No such file or directory
configure:11429:20: parser.h: No such file or directory

Here's some system info:

GNUstep: from cvs
libxml2: 2.4.21 (from source)
gcc: 3.1 (from source)
xml2-config --cflags out: -I/usr/local/include/libxml2
xml2-config --libs out: -L/usr/local/lib -lxml2 -lz -lpthread -lm
SuSE 7.2

It seems that the test includes do not include the libxml directory
which is causing the problem. This should definately be '#include
<libxml/headerfile.h>' because with libxml version 1 has a compat
symlink'd directory and libxml2 uses the libxml directory inside of
$prefix/libxml2. Either way, I patched the configure.ac files
appropriately and reran autoconf and the like. I also patched GSXML.[hm]
to include the proper files. At this point everything compiles ok, but
the following warning is shown for GSXML.m:

GSXML.m: In function `+[GSXMLAttribute descriptionFromType:]':
GSXML.m:189: warning: cannot find class (factory) method
GSXML.m:189: warning: return type for `type' defaults to id
GSXML.m: In function `+[GSXMLDocument documentWithVersion:]':
GSXML.m:278: warning: cannot find class (factory) method
GSXML.m:278: warning: return type for `_initFrom:parent:ownsLib:'
defaults to id
GSXML.m: In function `+[GSXMLNamespace descriptionFromType:]':
GSXML.m:478: warning: cannot find class (factory) method
GSXML.m:478: warning: return type for `type' defaults to id
GSXML.m: In function `+[GSXMLNode descriptionFromType:]':
GSXML.m:655: warning: cannot find class (factory) method
GSXML.m:655: warning: return type for `type' defaults to id

All of these lines are references to [self type] which exists BUT this
is called from within a class method which would infer +(int)type rather
than what does exist which is -(int)type. Either way, it compiles...

The bigger problem is that once installed, any attempt at using these
classes result in the following (the exception catch is mine of course):

CAUGHT EXCEPTION! Name = NSInternalInconsistencyException, Reason = read
unknown type info - 0

It would seem that this is due to an invalid libxml element / entity type.

If this is something that is obviously wrong, please let me know as I
have been fighting it all week if not longer. Also, I checked and I am
not the only one with this problem - at least two other people (one gcc
2.96 / debian, the other rh gcc version unknown) have said the same
happened to them.

Thanks in advance...
--
e.sammer <eric@linuxstep.org>
http://www.linuxstep.org

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