I decided to try to build the sfml2 branch on my linux vm, but I'm having trouble with the build, because the identifiers
SF_FORMAT_OGG
SF_FORMAT_VORBIS
SF_FORMAT_WVE
SF_FORMAT_MPC2K
SF_FORMAT_RF64
are not declared (in SoundFile.cpp)
libsndfile1-dev is installed, but none of these identifiers appear in sndfile.h