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Building and using Miral
========================
These instructions assume that you’re using Ubuntu 16.04LTS or later, I’ve not
earlier Ubuntu versions or other distributions.
You’ll need a few development and utility packages installed, along with the
Mir development packages:
$ sudo apt-get install cmake g++ make bzr python-pil
$ sudo apt-get install libmirserver-dev libmirclient-dev mirtest-dev
$ sudo apt-get install mir-graphics-drivers-desktop
(If you’re working on a phone or tablet use mir-graphics-drivers-android in
place of mir-graphics-drivers-desktop.)
With these installed you can checkout and build miral:
$ bzr branch lp:miral
$ mkdir miral/build
$ cd miral/build
$ cmake ..
$ make
This creates libmiral.so in the lib directory and an example shell
(miral-shell) in the bin directory. This can be run directly:
$ bin/miral-shell
With the default options this runs in a window on X (which is convenient for
development). To run independently of X you need to grant access to the
graphics hardware and specify a VT to run in. For example:
$ sudo bin/miral-shell --vt 4 --arw-file --file $XDG_RUNTIME_DIR/mir_socket
The miral-shell example is simple, don’t expect to see a sophisticated launcher
by default. You can start mir apps from the command-line. For example:
$ bin/miral-run gnome-terminal
That’s right, a lot of standard GTK+ applications will “just work” (the GDK
toolkit has a Mir backend). Any that assume the existence of an X11 and bypass
the toolkit my making X11 protocol calls will have problems though.
To exit from miral-shell press Ctrl-Alt-BkSp.
Running applications on Miral
-----------------------------
Assuming you have a Mir server running, native Mir applications can be started
from the command-line:
$ sudo apt-get install mir-demos
$ mir_demo_client_egltriangle
Similarly, GTK+, Qt and SDL applications can be run with the miral-run script:
$ bin/miral-run gedit
$ bin/miral-run 7kaa
Configuration options
---------------------
You can list the configuration options for miral-shell with "--help":
$ bin/miral-shell --help
Most of these options are inherited from Mir. These can be set on the command
line, by environment variables or in a config file. For example, if you want to
start the gnome-terminal when you run miral-shell you can:
Set supply the option on the command line:
$ bin/miral-shell --startup-apps gnome-terminal
Set the corresponding MIR_SERVER_<option> environment variable:
$ export MIR_SERVER_STARTUP_APPS=gnome-terminal
...
$ bin/miral-shell
Create a miral-shell config file:
$ echo startup-apps=gnome-terminal > ~/.config/miral-shell.config
...
$ bin/miral-shell
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