• Voting process

Generally casting a vote can be done with +1/ -1 (http://www.apache.org/foundation/voting.html), pressing the vote button Voting this issue in jira page is preferred as it can be tracked and monitored.

• Svn trunk is frozen before a new version is released

Procedure in releasing a new version usually takes time before it passes the voting. And before passing the voting process, rollback is possible; therefore, it is important to keep svn trunk clean.

• Can't build the TRUNK - cmake "CMAKE_CXX_COMPILER-NOTFOUND" error
  

It means that you don't have the build tools installed. Run the following command: sudo apt-get install build-essential -y