For those building GNU Radio master branch from source, there is a new
dependency that was introduced today with commit
https://github.com/gnuradio/gnuradio/commit/18f64ba685cfc2533e2d7726aa43c524b007d97b.
On Ubuntu/Debian, it's:
sudo apt-get install libsndfile1-dev
This adds new capabilities to the WAV source and sink blocks. Specifically:
1) WAV files can now be unsigned 8-bit, 16-bit, 24-bit, 32-bit, float or
double.
2) FLAC format is supported.
3) Ogg Vorbis format is supported.
4) 64-bit WAV files (files greater than 2 GB items in length) are supported.
Ron
