You can use vala-gen-project in the command line, that command is present in vtg[1] , before was in the source of vala. This command will generate all the configure, makefiles, etc. you need....
BTW, compile vtg with vala 0.6.1, not with 0.7.0
For now that version of vala-gen-project will generate the autotools files for a compilation with 0.6.1, but apply this changes [2] for compile your project with vala 0.7.0
[1]
http://code.google.com/p/vtg/[2]
http://www.mail-archive.com/vala-list gnome org/msg02480.html
Matias