Basis for the discussion: 741eeb38 (src: Drop pointless CMAKE_CURRENT_SOURCE_DIR for log4tango files, 2025-12-05) We have a bit of a mess in the include files with constants and friends: - common/log4tango/config.h.in: #cmakedefine from previous log4tango library - common/git_revision.h: git version information - common/tango_versions.h.in: version information plus #cmakedefine from libtango - server/tango_config.h: Preprocessor defines And I would like to cleanup that up (post the splitting code effort but before the 10.3.0 release). Here is my proposal: - common/defines.h.in: #cmakedefine (libtango and log4tango) and preprocessor defines - common/version.h: version information plus git version information It is intentional that I dropped the `tango_` prefix in the filenames and also that the old names don't match the new names. If someone included the old files directly she would now get a compile error for a missing include instead of things not working. I also lifted the distinction between preprocessor defines and #cmakedefine ones. The user doesn't care about that, and it is also confusing to have to know about it. @dlacoste-esrf @bourtemb @thomasives Thoughts? EDIT: And the new header files would also live in common where they belong.