[m-dev.] Upgrading Boehm GC, attempt #2

[Peter Wang]

On Wed, 23 Sep 2015 12:41:38 +1000, Paul Bone <paul at bone.id.au> wrote:
> On Tue, Jan 20, 2015 at 12:00:17PM +1100, Julien Fischer wrote:
> > 
> > Hi Paul,
> > 
> > I've finally had a change to look at this some more.
> > 
> > On Sat, 15 Nov 2014, Paul Bone wrote:
> > 
> > >If anyone would like to test this on Windows that would be helpful.  In
> > >particular I'm not sure how the symlink from boehm_gc/libatomic_ops to
> > >libatomic_ops will be handled on a windows file system.
> > 
> > On MSYS it results in an error, you will need to copy the libatomic_ops
> > directory on Windows.   It's probably alright on Cygwin, so if the
> > output of uname matches "*MINGW*" you should copy instead of link.
> > 
> 
> I don't easily have a machine to test with, what's the best way to do this,
> and does uname need any arguments?
> 
> I have:
> 
>     case $(uname) in
>         *MINGW*)
>             cp -r ../libatomic_ops boehm_gc/libatomic_ops;
>             ;;
>         *)  
>             ln -s ../libatomic_ops boehm_gc/libatomic_ops;
>             ;;
>     esac

It might be better just to try one then the other:

    ln -s ... || cp -r ...

In MSYS2, ln -s actually copies anyway.  (It also is able to create hard
links with cp -rl so that's another option.)

Peter