Problems compiling Gnome 2.4 with GARGNOME 0.27.1: failed to build libIDL

[Giustiniano <akitaras libero it>]

As the subject says, I'm trying to build Gnome 2.4 with Gargnome 0.27.1: 
everything goes fine until it tries to build libIDL, this is the 
compiler message: I really don't know where the problem might be, any 
help will be greatly appreciated :)
==> Building gnome/libIDL as a dependency
make[4]: Entering directory `/home/giustiniano/garnome-0.27.1/gnome/libIDL'
[===== NOW BUILDING:    libIDL-0.8.2    =====]
       [fetch] complete for libIDL.
       [checksum] complete for libIDL.
       [extract] complete for libIDL.
       [patch] complete for libIDL.
       [configure] complete for libIDL.
==> Running make in work/main.d/libIDL-0.8.2
make[5]: Entering directory 
`/home/giustiniano/garnome-0.27.1/gnome/libIDL/work/main.d/libIDL-0.8.2'
/bin/sh ./libtool --mode=compile cc -DPACKAGE_NAME=\"\" 
-DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\" -DPACKAGE_STRING=\"\" 
-DPACKAGE_BUGREPORT=\"\" -DLIBIDL_VERSION=\"0.8.2\" 
-DHAVE_CPP_PIPE_STDIN=1 -DCPP_NOSTDINC=\"-I-\" -DCPP_PROGRAM=\"cc\ -E\" 
-DYYTEXT_POINTER=1 -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 
-DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 
-DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 
-DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DSTDC_HEADERS=1 
-DHAVE_STDDEF_H=1 -DHAVE_UNISTD_H=1 -DHAVE_WCHAR_H=1 -DHAVE_POPEN=1 
-DHAVE_SYMLINK=1 -DHAVE_ACCESS=1 -DSIZEOF_LONG_LONG=8  -I. -I.  
-DYYDEBUG=1 -DYYERROR_VERBOSE=1 -DIDL_LIBRARY 
-I/home/giustiniano/garnome/include/glib-2.0 
-I/home/giustiniano/garnome/lib/glib-2.0/include   
-DG_LOG_DOMAIN=\"libIDL\" -Wall -Wunused -Wmissing-prototypes 
-Wmissing-declarations  -I/home/giustiniano/garnome/include 
-I/usr/X11R6/include  -g -I/home/giustiniano/garnome/include 
-I/usr/X11R6/include -L/home/giustiniano/garnome/lib -L/usr/X11R6/lib 
-O2 -pipe -c lexer.c
cc -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\" 
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" 
-DLIBIDL_VERSION=\"0.8.2\" -DHAVE_CPP_PIPE_STDIN=1 
-DCPP_NOSTDINC=\"-I-\" "-DCPP_PROGRAM=\"cc -E\"" -DYYTEXT_POINTER=1 
-DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 
-DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 
-DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 
-DSTDC_HEADERS=1 -DHAVE_STDDEF_H=1 -DHAVE_UNISTD_H=1 -DHAVE_WCHAR_H=1 
-DHAVE_POPEN=1 -DHAVE_SYMLINK=1 -DHAVE_ACCESS=1 -DSIZEOF_LONG_LONG=8 -I. 
-I. -DYYDEBUG=1 -DYYERROR_VERBOSE=1 -DIDL_LIBRARY 
-I/home/giustiniano/garnome/include/glib-2.0 
-I/home/giustiniano/garnome/lib/glib-2.0/include 
-DG_LOG_DOMAIN=\"libIDL\" -Wall -Wunused -Wmissing-prototypes 
-Wmissing-declarations -I/home/giustiniano/garnome/include 
-I/usr/X11R6/include -g -I/home/giustiniano/garnome/include 
-I/usr/X11R6/include -L/home/giustiniano/garnome/lib -L/usr/X11R6/lib 
-O2 -pipe -c lexer.c  -fPIC -DPIC -o lexer.lo
In file included from ./lexer.l:32:
/usr/share/bison++/bison.h:164: warning: #warning "Namespace conflict, 
disabling some functionality (bison++ only)"
./lexer.l:262: warning: no previous prototype for `__IDL_lex'
./lexer.l: In function `__IDL_lex':
./lexer.l:143: `__IDL_lval' undeclared (first use in this function)
./lexer.l:143: (Each undeclared identifier is reported only once
./lexer.l:143: for each function it appears in.)
make[5]: *** [lexer.lo] Error 1
make[5]: Leaving directory 
`/home/giustiniano/garnome-0.27.1/gnome/libIDL/work/main.d/libIDL-0.8.2'
make[4]: *** [build-work/main.d/libIDL-0.8.2/Makefile] Error 2
make[4]: Leaving directory `/home/giustiniano/garnome-0.27.1/gnome/libIDL'
make[3]: *** [../../gnome/libIDL/cookies/main.d/install] Error 2
make[3]: Leaving directory `/home/giustiniano/garnome-0.27.1/gnome/ORBit2'
make[2]: *** [../../gnome/ORBit2/cookies/main.d/install] Error 2
make[2]: Leaving directory `/home/giustiniano/garnome-0.27.1/gnome/GConf'
make[1]: *** [../../gnome/GConf/cookies/main.d/install] Error 2
make[1]: Leaving directory `/home/giustiniano/garnome-0.27.1/gnome/metacity'
make: *** [../../gnome/metacity/cookies/main.d/install] Error 2
giustiniano debian:~/garnome-0.27.1/meta/gnome-desktop$