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sudo pacman -Syu binutilssdl2 sdl2_ttf libx11 nettle fontconfig cmake spice-protocol gnu-free-dev cmake fonts</syntaxhighlight> ===== Void Linux ===== <syntaxhighlight lang=bash>xbps-install -Syu binutils-devel cmake freefont-ttf libsdl2-dev libsdl2SDL2-ttfdevel SDL2_ttf-dev libspicedevel spice-protocolfontconfig-dev bfontconfig1-dev libx11devel libX11-dev devel nettle-devdevel
makmake</presyntaxhighlight>
{{Start downloading the correct version for your release from https:Windows_Host_Application}}//looking-glass.hostfission.com/downloads. You can either choose between '''Official Releases''' which is is stable or '''Release Candidates''' that tries to be stable but has new features. '''Note:''' If your '''looking-glass-client''' was created by building from the '''master branch''' you have to pick the '''Bleeding Edge''' version. The windows host application captures the windows desktop and stuffs the frames into the shared memory via the shared memory virtual device, without this Looking Glass will not function. It is critical that the version of the host application matches the version of the client application, as differing versions can be, and usually are, incompatible. To get the Windows-Host-Application running after restart you need to run it as a privileged task we do that by starting '''cmd.exe''' as '''administrator''' and running a command in it which creates a windows task.<syntaxhighlight lang=batch>SCHTASKS /Create /TN "Looking Glass" /SC ONLOGON /RL HIGHEST /TR C:\Users\<YourUserName>\<YourPath>\looking-glass-host.exe</syntaxhighlight> Copy the following command in to your cmd shell and replace the '''<YourUserName> ''' with your username '''(e.g. "games")''' and your '''<YourPath> ''' with the part where the looking-glass-host.exe is stored '''(e.g. "Documents")''' . [[File:Screenshot_cmd_windowstask.png|500px]] Now you simply need to hit enter in to the cmd shell and restart the vm to test if it worked.
<syntaxhighlight lang=bash>
zypper install make cmake binutils-devel libSDL2-devel libSDL2_ttf-devel libnettle-devel nettle spice-protocol-devel fontconfig-devel libX11-devel libconfig-devel libwayland-egl-devel libXi-devel
</syntaxhighlight >
<syntaxhighlight lang=bash>
</syntaxhighlight>
Or pull the lastest using the '''git''' command.
<syntaxhighlight lang=bash>
git clone --recursive https://github.com/gnif/LookingGlass.git
</syntaxhighlight >
If you downloaded the file via the web link then you should have a 'zip' file. Simply unzip and cd into the new directory. If you used 'git' then cd into the 'LookingGlass' directory.
<pre stylesyntaxhighlight lang="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"bash>
mkdir client/build
cd client/build
cmake ../
;NOTE: The most common compile error is related to backtrace support this can be disabled by adding the following option to the cmake command. '''-DENABLE_BACKTRACE=0''', however, if you disable this and need support for a crash please be sure to use gdb to obtain a backtrace manually or there is nothing that can be done to help you.
Add the following to the libvirt machine configuration inside the 'devices' section by running "virsh edit VM" where VM is the name of your virtual machine.
<pre stylesyntaxhighlight lang="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"xml>
<shmem name='looking-glass'>
<model type='ivshmem-plain'/>
<size unit='M'>32</size>
</shmem>
</presyntaxhighlight>
The memory size (show as 32 in the example above may need to be adjusted as per [[Installation#Determining_Memory|Determining Memory]] section.
If you would like to use Spice to give you keyboard and mouse input along with clipboard sync support be sure to also do the following:
* Add a QXL video device, but in the type field type `none` (on older libvirt versions just disable the device in Windows Device Manager)
* Be sure to remove the virtual tablet pointing device.
* Be sure to add the virtual PS/2 Mouse device, and the Virtio keyboard device.
* Be sure that there is also a Spice Display configured (in addition to the video device)
If you want clipboard synchronization please see [[FAQ#How to enable clipboard synchronization via SPICE]]
=== Qemu Commands ===
Add the following to the commands to your QEMU command line, adjusting the bus to suit your particular configuration:
<pre stylesyntaxhighlight lang="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"bash>
-device ivshmem-plain,memdev=ivshmem,bus=pcie.0 \
-object memory-backend-file,id=ivshmem,share=on,mem-path=/dev/shm/looking-glass,size=32M
</presyntaxhighlight>
The memory size (show as 32 in the example above may need to be adjusted as per [[Installation#Determining_Memory|Determining Memory]] section.
You will need to adjust the memory size to a value that is suitable for your desired maximum resolution using the following formula:
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"code>
width x height x 4 x 2 = total bytes
total bytes / 1024 / 1024 = total megabytes + 2
</precode>
For example, for a resolution of 1920x1080 (1080p)
<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"code>
1920 x 1080 x 4 x 2 = 16,588,800 bytes
16,588,800 / 1024 / 1024 = 15.82 MB + 2 = 17.82
</precode>
You must round this value up to the nearest power of two, which with the above example would be 32MB
Please note that you must obtain version 0.1.161 or later
==== A note about IVSHMEM and Scream Audio ====
Using IVSHMEM with Scream may interfere with Looking Glass as it may try to use the same device. Please do not use the IVSHMEM plugin for Scream. Use the default network transfer method. The IVSHMEM method induces additional latency that is built into its implementation. When using VirtIO for a network device the VM is already using a highly optimized memory copy anyway so there is no need to make another one.
If you insist on using IVSHMEM for Scream despite it's inferiority to the default network implementation the Windows Host Application can be told what device to use. Create a looking-glass-host.ini file in the same directory as the looking-glass-host.exe file. In it, you can use the os:shmDevice option like so:
<syntaxhighlight lang=INI>
[os]
shmDevice=1
</syntaxhighlight>
=== Using the Windows Host Application ===
----
== Running the Client ==
