Comment 29 for bug 303232

So I counted the number of "float" and "double" words in the source code of the various libraries proposed here with:
egrep -hrwc double\|float . | xargs | sed 's/ / + /g' | bc

that gave:
- pixman: 66 => likely no vfp version
- cairo: 2423 => will have a vfp version
- pango1.0: 683 => will have a vfp version
- gtk+2.0: 1430 => will have a vfp version
- ffmpeg-debian: 1679 => will have a vfp version
- xft: 46 => likely no vfp version
- freetype: 76 => likely no vfp version

this is all assuming that benchmarks don't contradict the above assumption (if benchmarks show a strong progress with vfp or no progress with vfp, it overrides the above list)

Note that for ffmpeg-debian the approach might be to build a vfp+neon version using shlibs alternate dependencies and providing separate packages.

Concerning liboil it needs runtime opts, not a new build.