[GRASS-dev] [GRASS GIS] #3880: update/drop revision check after git switch

[GRASS GIS]

#3880: update/drop revision check after git switch
------------------------+---------------------------------
  Reporter:  hellik     |      Owner:  grass-dev@…
      Type:  defect     |     Status:  reopened
  Priority:  blocker    |  Milestone:  7.8.3
 Component:  Compiling  |    Version:  svn-releasebranch76
Resolution:             |   Keywords:  svn, git, revision
       CPU:  All        |   Platform:  All
------------------------+---------------------------------

Comment (by mmetz):

 Regarding version and date check as in
 [https://github.com/OSGeo/grass/blob/master/lib/gis/gisinit.c#L52 lib/gis
 G__gisinit()],
 [https://github.com/OSGeo/grass/blob/master/lib/gis/gisinit.c#L86 lib/gis
 G__no_gisinit()] and
 [https://github.com/OSGeo/grass/blob/master/general/g.version/main.c#L142
 g.version], the hash and date of the last git commit can be easily
 obtained for any file/directory and used to define
 [https://github.com/OSGeo/grass/blob/master/include/gis.h#L42
 GIS_H_VERSION] and
 [https://github.com/OSGeo/grass/blob/master/include/gis.h#L43 GIS_H_DATE].

 The hash and date of the latest commit to the `include` folder can be
 obtained with e.g.
 {{{
 git log -1 --pretty=format:"%H|%cd" -- include
 }}}
 catching any changes in the GRASS header files.

 This git commit hash and date can be stored in a file and then used by
 `configure` to update `include/version.h` after this header has been
 generated (also by configure).

 Obviously, `configure` must also work if git is not available or if the
 source code is not a git clone.

 The challenge is to automatically update the file with the hash and date
 of the latest git commit to the `include` folder. Updating and uploading
 this file will require another commit. We could provide a script to update
 the file with the hash and date of the latest git commit to the `include`
 folder and add a [https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks
 git hook] to make sure this hash+date file has been updated if any changes
 have been made to the `include` folder.

 The challenge is to create an appropriate [https://git-scm.com/book/en/v2
 /Customizing-Git-Git-Hooks git hook].

-- 
Ticket URL: <https://trac.osgeo.org/grass/ticket/3880#comment:17>
GRASS GIS <https://grass.osgeo.org>