libudev packaging problems

[27thLiz]

While reading through the irc backlogs I noticed this discussion (ping @punto- ):

<punto> can we statically link libudev.so? that one seems to not be as standard as the others
<punto> (for example it's not on the steam runtime, at least not the version that we use to build on the build server)
<Akien> punto: I have it in the steam runtime: /home/akien/.steam/steam/ubuntu12_32/steam-runtime/i386/lib/i386-linux-gnu/libudev.so.0
<Akien> punto: Don't you mean libevdev?
<Akien> punto: libevdev was dropped so shouldn't be an issue
<punto> yeah but the build server links with libudev.so.1
<punto> and package libudev0 doesn't exist anymore
<punto> could we do the same with udev? replace it with normal code?
<Akien> No idea

The following options came into my mind:

• Figure out a way to add statically linked libraries to the build system. Might come in handy in the future.
• Add a code-path (enabled when libudev hasn't been found) that manually checks for joystick devices changes every (few) frame/s like the old code has. (poll_joysticks(), if you remember it ^^ )
• Try to load the symbols at runtime (like with xinput on windows)

[punto-]

If the only thing that udev provides is notifications when devices are
connected, I like option 2. With that in place we can eventually implement
option 1 if necessary, and it's not a big deal if the engine takes a second
to realize a joystick has been plugged in.. We would have to compile
without udev by default, since the original problem was that our build
machine is linking with version 1 and steam only has version 0.. We don't
want it to fail at static linking time..

On 13 February 2016 at 16:29, Hondres [email protected] wrote:

While reading through the irc backlogs I noticed this discussion (ping
@punto- https://github.com/punto- ):

can we statically link libudev.so? that one seems to not be as standard as the others
(for example it's not on the steam runtime, at least not the version that we use to build on the build server)
punto: I have it in the steam runtime: /home/akien/.steam/steam/ubuntu12_32/steam-runtime/i386/lib/i386-linux-gnu/libudev.so.0
punto: Don't you mean libevdev?
punto: libevdev was dropped so shouldn't be an issue
yeah but the build server links with libudev.so.1
and package libudev0 doesn't exist anymore
could we do the same with udev? replace it with normal code?
No idea

The following options came into my mind:

• Figure out a way to add statically linked libraries to the build
  system. Might come in handy in the future.
• Add a code-path (enabled when libudev hasn't been found) that
  manually checks for joystick devices changes every (few) frame/s like the
  old code was. (poll_joysticks(), if you remember it ^^ )
• Try to load the symbols at runtime (like with xinput on windows)

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