That's actually the version I'm using! The command
scons platform=x11 target=release_debug tools=yes use_llvm=yes CCFLAGS="-mcpu=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -mlittle-endian -munaligned-access" -j4 worked for me. I found it here. It's a little laggy, but it works.(and different compiler options could probably help).
EDIT: I should mention that I used the source for 3.2.3 Stable to compile.
EDIT:Also, it only works for 2d, not 3d.