[GCC-XML]gccxml build problem

[Christian Szegedy]

I am trying to build gccxml on a Linux machine (SuSe 8.0 Kernel 2.4.18). 
I have diffculties building the patched gcc.
I downloaded the prepatched gcc source file gccxml-0.2-src-cc1plus.tar.gz.

configured with:

configure --prefix=~/extern/gcc304

(i have created the directory "~/extern/gcc304" prior to the configuration)

While building, I have the following error:

gmake[3]: Entering directory 
`/home/szegedy/extern/gccxml-0.2-src-cc1plus/i686-pc-linux-gnu/libstdc++-v3/libmath'
/bin/sh ../libtool --mode=compile 
/home/szegedy/extern/gccxml-0.2-src-cc1plus/gcc/xgcc 
-B/home/szegedy/extern/gccxml-0.2-src-cc1plus/gcc/ 
-B~/extern/gcc304/i686-pc-linux-gnu/bin/ 
-B~/extern/gcc304/i686-pc-linux-gnu/lib/ -isystem 
~/extern/gcc304/i686-pc-linux-gnu/include -DHAVE_CONFIG_H -I. -I. 
-I..      -g -O2 -c signbit.c
libtool: compile: unable to infer tagged configuration
libtool: compile: specify a tag with `--tag'

Does someone have a clue what does it mean and how could I avoid it?

Thanks in advance, Christian