[llvm-dev] GitHub anyone?
Robinson, Paul via llvm-dev
llvm-dev at lists.llvm.org
Tue May 31 15:38:28 PDT 2016
> -----Original Message-----
> From: llvm-dev [mailto:llvm-dev-bounces at lists.llvm.org] On Behalf Of Mehdi
> Amini via llvm-dev
> Sent: Tuesday, May 31, 2016 2:38 PM
> To: Bill Kelly
> Cc: LLVM Dev; Clang Dev; LLDB Dev
> Subject: Re: [llvm-dev] GitHub anyone?
> > On May 31, 2016, at 2:01 PM, Bill Kelly via llvm-dev <llvm-
> dev at lists.llvm.org> wrote:
> > Chris Lattner via llvm-dev wrote:
> >> Personally, I’m hugely in favor of moving llvm’s source hosting to
> github at
> >> some point, despite the fact that I continue to dislike git as a tool
> >> consider monotonicly increasing version numbers to be hugely
> > For whatever it's worth, our projects define a `buildnum` git alias:
> > alias.buildnum=!sh -c "git rev-list --all | wc -l"
Or the cheaper "git rev-list --count --all" if your git is new enough.
We do something like this as well.
> > So from the shell:
> > $ git buildnum
> > 17475
> > This number increases monotonically per commit.
> It does not work with branches though (we're not really planning to have
> branches I believe),
You can get a per-branch unique number with this tactic. On our local
branches we use "rev-list origin/master.." which is the number of commits
since branching from master, and that's enough for our local purposes.
> but more importantly it won't handle cross-repository
> versioning (how do you relate the number this command prints in the llvm
> repo to the number it'll print in the clang repo?), which I believe is
> something important considering our setup.
Is it really that important? Or are we just used to the convenience?
If the Clang build number is a tuple (cfe-number, llvm-number) instead
of a single number, how horrible is that really? If you consider what
an out-of-tree front end probably does, it's exactly the same thing.
(I admit that locally we mush cfe+llvm into a single branch and do the
rev-list count to get a single number. But that's more for our own
convenience than anything else.)
> > Our build scripts make this number available in various #define forms.
> > (We use a little extra scripting logic to also determine whether there
> > are currently any unmerged or uncommitted changes, and add an annotation
> > to the program version in that case, e.g. "9.3.17475 [unmerged]")
> > It's all stupidly simple, but seems to work well enough for us.
> > Regards,
> > Bill
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