David Brown have made astonishing amount of brilliant contributions to the voc source.
voc repository have been moved to the newly created vishaps organization, which David also joined.
Release 2.0 is coming.
Current development sources: https://github.com/vishaps/voc
In particular – build system simplified, ports to Windows via cygwin, mingw and visual studio c compilers added, android port via termux have been added, many code unifications.
Changes summary: https://github.com/vishaps/voc/blob/master/triage/V2CHANGES.md
HC SVNT DRACONES, and happy testing.