Problems compiling Amaya 11.2 on FreeBSD

Hi *,

I have troubles compiling Amaya 11.2 on my FreeBSD machine (8.0-BETA2, 
i386).

Here's what I've done so far:
- downloaded amaya-sources-11.2.tgz and unpacked it
- created a directory 'freebsd' under Amaya (as per the README-file)
- ran configure: ../configure --with-gl --enable-system-libwww 
--enable-system-raptor
- gmake all

libwww-5.4.0 and raptor-1.4.18 are installed from the ports-tree.

Then the fun begins ;-)
First, it fails due to a redefinition of intptr_t in thot_sys.h at line 
257. I commented this out. It then continues happily until it reaches

[snipped lots of stuff]
gmake[3]: Entering directory 
`/data/Projekte/Amaya/Amaya11.2/Amaya/freebsd/thotlib'
g++ -O2 -Wall -x c++ -D__cplusplus -D_UNIX -D_GL -D_WX -DHAVE_CONFIG_H 
-I.. -I../../amaya/xpm -I../../thotlib/include 
-I../../thotlib/internals/var -I../../thotlib/internals/h 
-I../../thotlib/internals/f 
-I/data/Projekte/Amaya/Amaya11.2/wxWidgets/src/png 
-I/data/Projekte/Amaya/Amaya11.2/wxWidgets/src/jpeg 
-I/data/Projekte/Amaya/Amaya11.2/wxWidgets/src/tiff 
-I/data/Projekte/Amaya/Amaya11.2/Amaya/freebsd/wxWidgets_RELEASE/lib/wx/include/gtk2-unicode-release-static-2.8 
-I/data/Projekte/Amaya/Amaya11.2/wxWidgets/include 
-I/data/Projekte/Amaya/Amaya11.2/wxWidgets/contrib/include 
-D_FILE_OFFSET_BITS=64 -D_LARGE_FILES -D__WXGTK__ -pthread 
-D_THREAD_SAFE -I/usr/X11R6/include   -I/usr/local/include/freetype2 
-I/usr/local/include  -c ../../thotlib/unicode/ustring.c -o 
unicode/ustring.o
.../../thotlib/unicode/ustring.c: In function 'CHARSET 
TtaGetLocaleCharset()':
.../../thotlib/unicode/ustring.c:440: error: '_NL_MESSAGES_CODESET' was 
not declared in this scope
gmake[3]: *** [unicode/ustring.o] Error 1
gmake[3]: Leaving directory 
`/data/Projekte/Amaya/Amaya11.2/Amaya/freebsd/thotlib'
gmake[2]: *** [../thotlib/libThotKernel.a] Error 2
gmake[2]: Leaving directory 
`/data/Projekte/Amaya/Amaya11.2/Amaya/freebsd/batch'
gmake[1]: *** [../bin/str] Error 2
gmake[1]: Leaving directory 
`/data/Projekte/Amaya/Amaya11.2/Amaya/freebsd/amaya'
$

I looked for _NL_MESSAGES_CODESET on my system but couldn't find 
anything. Neither did Google.
Where does this thing come from? How to resolve this?

Thanks a lot in advance.

Regards,
Philipp