Comment 2 for bug 1164615

I compile my code in my computer with Vala 0.20 under Raring and the process works fine; I try to create a package in launchpad with exactly the same code, and I receive the same error.

I my computer, I checked the .c code and the call is gkt_window_set_opacity, but in the launchpad servers, the error is:

CMakeFiles/cronopete.dir/restore.c.o: In function `restore_iface_construct':
restore.c:(.text+0x150d): undefined reference to `gtk_widget_set_opacity'
CMakeFiles/cronopete.dir/restore.c.o: In function `restore_iface_timer_move':
restore.c:(.text+0xabbd): undefined reference to `gtk_widget_set_opacity'
collect2: error: ld returned 1 exit status