Problems compiling T2D on Linux

I get a compiler error when I try to make T2D on my Fedora Core 3 linux box. Here's the complete flow:

[johnzo@schiff SDK]$ gcc -v
Reading specs from /usr/lib/gcc/i386-redhat-linux/3.4.2/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-java-awt=gtk --host=i386-redhat-linux
Thread model: posix
gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)

[johnzo@schiff SDK]$ uname -a
Linux schiff.johnzo.com 2.6.10-1.770_FC3 #1 Thu Feb 24 14:00:06 EST 2005 i686 athlon i386 GNU/Linux

johnzo@schiff SDK]$ make -f mk/configure.mk COMPILER=GCC3 BUILD=DEBUG OS=LINUX

Current Configuration: this config is VALID
OS: LINUX
COMPILER: GCC3
BUILD: DEBUG
DIR.OBJ: out

To change the current configuration type:

make -f mk/configure.mk {arguments, ...}

required arguments:
OS={WIN32 BEOS LINUX OpenBSD FreeBSD Solaris}
COMPILER={CW6 VC6 GCC2 GCC3}
BUILD={DEBUG RELEASE}

optional arguments:
DIR.OBJ={path to store intermediate obj files}

Note: all arguments are case sensitive.

johnzo@schiff SDK]$ make
--> Compiling audio/audio.cc
In file included from ./audio/audioBuffer.h:16,
from ./audio/audioDataBlock.h:13,
from ./audio/audio.h:13,
from audio/audio.cc:6:
./core/resManager.h: In member function 'void Resource::unlock()':
./core/resManager.h:255: error: invalid use of undefined type 'struct ResManager'
./core/resManager.h:38: error: forward declaration of 'struct ResManager'
./core/resManager.h: In member function 'void Resource::purge()':
./core/resManager.h:263: error: invalid use of undefined type 'struct ResManager'
./core/resManager.h:38: error: forward declaration of 'struct ResManager'
./core/resManager.h:265: error: invalid use of undefined type 'struct ResManager'
./core/resManager.h:38: error: forward declaration of 'struct ResManager'
./core/resManager.h: In member function 'void Resource::_unlock()':
./core/resManager.h:278: error: invalid use of undefined type 'struct ResManager'
./core/resManager.h:38: error: forward declaration of 'struct ResManager'
audio/audio.cc: In function 'int loopingImageSort(const void*, const void*)':
audio/audio.cc:161: warning: converting to 'int' from 'float'
audio/audio.cc: In function 'int streamingSourceSort(const void*, const void*)':
audio/audio.cc:193: warning: converting to 'int' from 'float'
audio/audio.cc: In function 'AUDIOHANDLE alxCreateSource(const Audio::Description*, const char*, const MatrixF*, AudioSampleEnvironment*)':
audio/audio.cc:707: warning: converting to non-pointer type 'ALuint' from NULL
audio/audio.cc: In function 'ALuint alxGetWaveLen(ALuint)':
audio/audio.cc:2092: warning: converting to 'ALuint' from 'F64'
make[1]: *** [out.GCC3.DEBUG/audio/audio.obj] Error 1
make: *** [default] Error 2