[Tracker] Compile broken on Ubuntu Dapper x86_64

[Alessandro Braggio <braggio fisica unige it>]

Dear all,
I have an Ubuntu Dapper

**** ****:~$ uname -a
Linux ***** 2.6.15-51-amd64-generic #1 SMP PREEMPT Tue Oct 23 21:41:42 
UTC 2007 x86_64 GNU/Linux

I download tracker and I tried to compile it after installed all 
required packages.
I did

./configure

(all was apparently OK) and after I did

make

and I obtained this error

tracker-email-thunderbird.c: In function 
'email_parse_mail_tms_file_by_path':
tracker-email-thunderbird.c:214: error: 'G_MARKUP_TREAT_CDATA_AS_TEXT' 
undeclared (first use in this function)
tracker-email-thunderbird.c:214: error: (Each undeclared identifier is 
reported only once
tracker-email-thunderbird.c:214: error: for each function it appears in.)
make[3]: *** [tracker-email-thunderbird.o] Error 1
make[3]: Leaving directory 
`/home/braggio/Software/tracker-0.6.4/src/trackerd'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/braggio/Software/tracker-0.6.4/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/braggio/Software/tracker-0.6.4'
make: *** [all] Error 2

It appear a stupid thing but I do not know too much about the tracker 
code. Could you suggest some fixing?

Bye,
to all