Set cmake project description with current datetime-CodePudding

I just learned how I can use

project(ProjectName VERSION 1.0)

and the configure_file to play with the version and embed it into the binary.

On project documentation I see it also accept a description string.

project(ProjectName VERSION 1.0 description_string)

So I want to use the current datetime at the time cmake is running as the description string.

Wondering if I can use datetime, not commit datetime but current datetime at the time cmake is running?

CodePudding user response：

You can use string(TIMESTAMP ...) like this:

string(TIMESTAMP RUN_TIME)
project(ProjectName VERSION 1.0 DESCRIPTION "${RUN_TIME}")

Note, however, that this will be populated only when CMake is actually run on this script. So, for example, you generated your project for, say, Visual Studio and work a few days on it there. If you didn't change the CMake file, remove CMake cache or run cmake on the script any other way your date will be stale.