Hi On the opus-codec web page here ---> http://www.opus-codec.org/development/ Underneath "Source code repository" there are options to download the gits. As well as the traditional "$ git clone git://git.opus-codec.org/opus.git" there are also Snapshots. opus-master.tar.gz opus-1.0.x-branch.tar.gz It's a great idea... To download HEAD the command can be like this... wget "git.xiph.org/?p=opus.git;a=snapshot;h=HEAD;sf=tgz" -qO- | tar -xz; cd opus-HEAD-*; ./autogen.sh Problem is... it only brings down the shallow clone. So when configured it shows... configure: ------------------------------------------------------------------------ opus unknown: Automatic configuration OK. Then later when we try to compile opus-tools it shows... checking for OPUS... no configure: error: Package requirements (opus >= 1.0.3) were not met: Requested 'opus >= 1.0.3' but version of Opus is unknown You may find new versions of Opus at http://opus-codec.org/ This problem with shallow clones has been raised before on the mailing list but didn't get fixed. "Unknown versions in git." http://lists.xiph.org/pipermail/opus/2013-September/002273.html http://lists.xiph.org/pipermail/opus/2013-October/thread.html