Question

My current workflow:

1. hg update (or whatever one uses to check out a revision)
2. MyProject.pro → qmake → MyProject.vcproj
3. Open Visual Studio, edit files
4. Build project

During the build step, how can I update my config.h header file with information from version control system (e.g. hg id)?

MyProject.vcproj is generated by qmake, so I shouldn’t edit it by hand.

Answer 1

You can execute external commands from inside qmake. The easiest way to make the information available in your sources would be to use a define:

HGID = $$system(hg id)
DEFINES += HGID=\\\"$$HGID\\\"

I’m not sure if you can edit an external file from qmake. You could use an external tool, but on Windows you normally don’t have things like sed, so it might be a little more problematic.