Re: [Enigma-devel] Re: SVN revision number

[Ronald Lamprecht]

Hi,

Daniel Heck wrote:
> > 5. Solution approach: (svn info,...) generate revision to an extra file
> >
> > If you generate the info within the compilation you would presume that
> > you operate on a svn workarea. But the make has to work on plain
> > distributed sources, too.
> >
> > I noticed that several other projects did face the same problem. IIRC
> > there are even comments on the svn homepage concerning this unsolved
> > problem. Those projects that report revisions like Tortoise do edit them
> > manually into the sources.
> >
> > I would appreciate any simple proper solution for this request.
>
> A simple shell script like
>
> cat <<EOF
> const char *svnVersion =
> "`which svnversion >/dev/null && svnversion`";
> EOF
>
> combined with a simple rule in the Makefile should do the trick. 
> Svnversion prints "exported" as the revision number when the working 
> directory is not a working copy and appends an "M" if the working copy 
> contains modifications.

svnversion is the right tool.

But it does not really help, as we have a classical "hen and egg" problem:

You need to commit your changes and you need to update to get correct 
svnversion output. Now you need to start make again to generate the 
source which results in a modified source which need to be commited,...

Furtheron this modified piece of source would be a steady source of 
merge errors.

Just a keyword like direct support of svn would solve this problem. But 
IIRC I read some statements from the svn authors that this problem 
cannot be solved even within svn.

Greets,

Ronald