Can't install doomsday from AUR

Question

Hello.
I want to install doomsday to play doom, doom2 and so on
I type yaourt -S doomsday and installation works correctly, but then this appears:
-- Build files have been written to: /tmp/yaourt-tmp-ignacio/aur-doomsday/src/deng-1.9.0-beta6.9/doomsday/build
Scanning dependencies of target Generate.pk3
File "./packres.py", line 9
print "Usage: %s pk3-target-dir" % sys.argv[0]
^
SyntaxError: invalid syntax
make[2]: *** [CMakeFiles/Generate.pk3] Error 1
make[1]: *** [CMakeFiles/Generate.pk3.dir/all] Error 2
make: *** [all] Error 2
==> ERROR: Se produjo un error en build().
Cancelando...
==> ERROR: Makepkg was unable to build doomsday.
I've all base-devel packages in my system.

Answer 1

I had the same problem, did what GordonGR said, and it worked, but now I'm getting this:
[ 41%] Building C object CMakeFiles/doomsday.dir/external/lzss/unix/src/lzss.o
Linking C executable doomsday
/usr/bin/ld: CMakeFiles/doomsday.dir/engine/portable/src/ui_main.o: undefined reference to symbol 'sin@@GLIBC_2.0'
/usr/bin/ld: note: 'sin@@GLIBC_2.0' is defined in DSO /lib/libm.so.6 so try adding it to the linker command line
/lib/libm.so.6: could not read symbols: Invalid operation
collect2: ld devolvi? el estado de salida 1
make[2]: *** [doomsday] Error 1
make[1]: *** [CMakeFiles/doomsday.dir/all] Error 2
make: *** [all] Error 2