I'm compiling tmux from its source code via a script which looks like this:

set -e
build() {
  [[ -d "${DIR}" ]] || mkdir -p "${DIR}"
  cd "${DIR}"
  if [[ ! -d tmux ]]; then
    git clone https://github.com/tmux/tmux
  cd tmux
  git stash
  git checkout master
  git pull
  make clean; make distclean
  sh autogen.sh
install() {
  dpkg -r tmux
  checkinstall --pkgname tmux --pkgversion '9999:9999.9999' -y

It compiles and installs tmux, as expected.
But there's still one issue, which is the version reported by $ tmux -V:

$ tmux -V
tmux master

It reports tmux master, while I would prefer tmux X.Y, X.Y being the version of the latest release. For example, at the moment, the latest release is 2.8, so I would like $ tmux -V to output tmux 2.8.

Is there any way to change this output?

I've looked at the output of ./configure --help, and searched for an option to set the version of the tmux process, but couldn't find one.

For the moment, I've included a sed command in my script so that it automatically edits the file configure.ac, and assigns a big version number 99.99 (I don't know how to programmatically get the version number of the latest release):

sh autogen.sh
sed -i 's/AC_INIT(tmux, master)/AC_INIT(tmux, 99.99)/' configure.ac

Is there a better way?

The reason why I ask this question is because I use the tmux-open plugin, which doesn't work as expected when $ tmux -V outputs tmux master.

The latter uses this line of code to determine the version of the current tmux process:

$ tmux_version="$(tmux -V | cut -d ' ' -f 2)"

The plugin then uses this variable to determine the syntax of the commands installing key bindings.

The key bindings are not installed on my machine, and I think it's due to the output of $ tmux -V. Because if I replace this line in the plugin:

if [[ $tmux_version == $1 ]]

with this line:

if [[ $tmux_version == $1 ]] || [[ $tmux_version == 'master' ]]

Then the plugin correctly installs its key bindings.

  • 1
    Does git describe or ... tag show anything useful? – Jeff Schaller Sep 14 '18 at 19:34
  • @JeffSchaller Ah yes, you're right git describe gives 2.8-66-g71d2ab1. I'll use this as the version number, thank you very much. – user938271 Sep 14 '18 at 19:37
  • 1
    I think if you set the VERSION env variable before running configure that will set the version in the right .h file. So VERSION=2.8-66-g71d2ab1 ./configure && make – Cupcake Protocol Sep 14 '18 at 19:40
  • @CupcakeProtocol I've tried VERSION="$(git describe)" ./configure && make, and VERSION=2.8-66-g71d2ab1 ./configure && make, but both give the same output tmux master. Maybe I should use another variable, though. Anyway, thank you very much for the suggestion. – user938271 Sep 14 '18 at 19:47

insert a line like:

sed '/AC_INIT/s/master/m4_esyscmd_s([git describe])/' -i configure.ac

before the sh autogen.sh call in your script.

based on the answer here

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