Re: [Qemu-devel] [PATCH v4 01/12] ui: add keycodemapdb repository as a GIT submodule

[Fam Zheng <famz@redhat.com>]

On Tue, 08/15 11:53, Daniel P. Berrange wrote:
> On Tue, Aug 15, 2017 at 06:47:22PM +0800, Fam Zheng wrote:
> > On Tue, 08/15 11:04, Daniel P. Berrange wrote:
> > > On Tue, Aug 15, 2017 at 10:36:04AM +0100, Daniel P. Berrange wrote:
> > > > The https://gitlab.com/keycodemap/keycodemapdb/ repo contains a
> > > > data file mapping between all the different scancode/keycode/keysym
> > > > sets that are known, and a tool to auto-generate lookup tables for
> > > > different combinations.
> > > > 
> > > > It is used by GTK-VNC, SPICE-GTK and libvirt for mapping keys.
> > > > Using it in QEMU will let us replace many hand written lookup
> > > > tables with auto-generated tables from a master data source,
> > > > reducing bugs. Adding new QKeyCodes will now only require the
> > > > master table to be updated, all ~20 other tables will be
> > > > automatically updated to follow.
> > > > 
> > > > Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
> > > > ---
> > > >  .gitignore                    |  2 ++
> > > >  .gitmodules                   |  3 +++
> > > >  configure                     |  2 ++
> > > >  tests/docker/Makefile.include | 11 +++++++----
> > > >  tests/docker/run              |  4 +++-
> > > >  ui/Makefile.objs              | 18 ++++++++++++++++++
> > > >  ui/keycodemapdb               |  1 +
> > > >  7 files changed, 36 insertions(+), 5 deletions(-)
> > > >  create mode 160000 ui/keycodemapdb
> > > > 
> > > 
> > > > diff --git a/configure b/configure
> > > > index dd73cce62f..bd373ec2b4 100755
> > > > --- a/configure
> > > > +++ b/configure
> > > > @@ -5258,6 +5258,8 @@ echo_version() {
> > > >      fi
> > > >  }
> > > >  
> > > > +(cd $source_path && git submodule update --init ui/keycodemapdb)
> > > > +
> > > 
> > > Urgh, no, this won't work because of course you don't have to
> > > have a git checkout when running configure.
> > > 
> > > Any suggestions on the "best" way to ensure that the ui/keycodemapdb
> > > git submodule is always checked out, without requiring developers to
> > > do something manually ?
> > > 
> > > I could try
> > > 
> > >   (cd $source_path && test -d .git && git submodule update --init ui/keycodemapdb)
> > > 
> > > but wonder if there's a better way ?
> > 
> > I think the way dtc handles this is okay: probe headers/libs, if failed, hint
> > the "git submodule update" command in the error message.  This is also a
> > familiar/friendly user interface to developers.
> 
> I don't think that's acceptable in this case. Few people will ever need
> to setup the dtc submodule as distros commonly have that available.

It's not available in the case of RHEL/CentOS 7, so it is similar in a degree
which is why I mentioned it.

But certainly I'll be happy to see a way to have this automated.  FWIW I've no
objection to the "test -d .git" idea.

For docker tests to work, I'm inclined to change the Makefile rules so that
every initialized submodule under $SRC_PATH is git-archived and copied in.

Fam