[PATCH] Fix Windows build

[Jordan Rose]

Thanks, Paul. I figured the situation would be no worse on Windows than it currently is, but this is obviously better. I am wondering why you decided to use "git svn log" to find the revision number followed by "git svn info" to get the repository, since the GetSourceVersion script uses "git svn info" for the revision already. I also think it's worth not regressing what GetRepositoryPath supports for the pure git case—that's the configuration a lot of people use for internal branches (including Apple).

After this change, I would actually delete the GetSourceVersion and GetRepositoryPath scripts. They're not being used by LLVM itself for anything else, and they're not cross-platform.

I don't mind changing the macro names (in a separate patch). I didn't like them either. :-)

Jordan


> On Dec 1, 2014, at 7:01 , Robinson, Paul <Paul_Robinson at playstation.sony.com> wrote:
> 
> +Jordan as he's the last one to muck with GetSVN.cmake.
>   <>
> From: llvm-commits-bounces at cs.uiuc.edu <mailto:llvm-commits-bounces at cs.uiuc.edu> [mailto:llvm-commits-bounces at cs.uiuc.edu <mailto:llvm-commits-bounces at cs.uiuc.edu>] On Behalf Of Robinson, Paul
> Sent: Sunday, November 30, 2014 1:58 PM
> To: Sean Silva
> Cc: llvm-commits at cs.uiuc.edu <mailto:llvm-commits at cs.uiuc.edu>
> Subject: RE: [PATCH] Fix Windows build
>  
> I have attached the output with a git-svn repo on Mac. Looks fine
> Thanks for testing it!  (But you didn't actually say LGTM so leaving this open.)
> (except for the awkwardness of calling the macros SVN_REVISION and SVN_REPOSITORY; could you change the name of those in a follow-on patch?).
> The GetSVN.cmake script doesn't decide on those names; they're determined by the caller.
> In this case the generated header is private to clang/lib/Basic and IIRC is used by only one module within Basic; so I don’t see any value in changing the names.
> They refer to "our (i.e. clang's) SVN revision, and that other project's (i.e. LLVM's) SVN revision."  Seems clear enough to me in context.
> --paulr
>  
> From: Sean Silva [mailto:chisophugis at gmail.com <mailto:chisophugis at gmail.com>] 
> Sent: Wednesday, November 26, 2014 5:47 PM
> To: Robinson, Paul
> Cc: llvm-commits at cs.uiuc.edu <mailto:llvm-commits at cs.uiuc.edu>
> Subject: Re: [PATCH] Fix Windows build
>  
> I have attached the output with a git-svn repo on Mac. Looks fine (except for the awkwardness of calling the macros SVN_REVISION and SVN_REPOSITORY; could you change the name of those in a follow-on patch?).
>  
> -- Sean Silva
>  
> On Wed, Nov 26, 2014 at 5:09 PM, Robinson, Paul <Paul_Robinson at playstation.sony.com <mailto:Paul_Robinson at playstation.sony.com>> wrote:
> Revised patch that I'm pretty sure will handle straight git.
> I'd appreciate somebody trying it with a git-svn clone, though.
> Thanks,
> --paulr
> 
> > -----Original Message-----
> > From: Robinson, Paul
> > Sent: Wednesday, November 26, 2014 4:15 PM
> > To: Robinson, Paul; llvm-commits at cs.uiuc.edu <mailto:llvm-commits at cs.uiuc.edu>
> > Subject: RE: [PATCH] Fix Windows build
> >
> > With patch...
> >
> > > -----Original Message-----
> > > From: llvm-commits-bounces at cs.uiuc.edu <mailto:llvm-commits-bounces at cs.uiuc.edu> [mailto:llvm-commits- <mailto:llvm-commits->
> > > bounces at cs.uiuc.edu <mailto:bounces at cs.uiuc.edu>] On Behalf Of Robinson, Paul
> > > Sent: Wednesday, November 26, 2014 4:12 PM
> > > To: llvm-commits at cs.uiuc.edu <mailto:llvm-commits at cs.uiuc.edu>
> > > Subject: [PATCH] Fix Windows build
> > >
> > > r222391 updated GetSVN.cmake to run the LLVM helper scripts
> > > GetSourceVersion
> > > and GetRepositoryPath.  However, being shell scripts, they work only on
> > > Unix-y hosts; on Windows they don't work, you end up with an
> > > SVNVersion.inc
> > > that looks like this:
> > >
> > > #define LLVM_REVISION ""
> > > #define LLVM_REPOSITORY ""
> > > #define SVN_REVISION ""
> > > #define SVN_REPOSITORY ""
> > >
> > > I've rewritten the scripts as best I can into CMake so they will work on
> > > Windows as well.  Now I get a better-looking SVNVersion.inc:
> > >
> > > #define LLVM_REVISION "222770"
> > > #define LLVM_REPOSITORY "http://llvm.org/svn/llvm-project/llvm/trunk <http://llvm.org/svn/llvm-project/llvm/trunk>"
> > > #define SVN_REVISION "222770"
> > > #define SVN_REPOSITORY "http://llvm.org/svn/llvm-project/cfe/trunk <http://llvm.org/svn/llvm-project/cfe/trunk>"
> > >
> > > I can only test it on SVN, but I was able to clone code from another
> > > CMake script so I'm pretty hopeful that it works for Git as well.
> > >
> > > Thanks,
> > > --paulr
> > >
> > >
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