Thread: [Freeglut-developer] X11 Xinput.h missing?

For anyone who compiles FG for X11, have you encountered
compile issues with Xinput.h not being found?

I have a clean install of Ubuntu 16.04.02 LTS that I went to
compile on. After installing everything necessary (gl.h, libgl,
libglu), CMake completed and I went to build (gcc).

At that point, I got a compile error from gcc telling me it
"freeglut/src/x11/fg_internal_x11.h:42:35: fatal error: X11/extensions/XInput.h: No such file or directory"

I have not build anything on Linux involving X11, so I wasn't
sure where to expect the file and did a search. I found a
handful of results where people tried to build FG, hit the
same issue and it came down to the file is now called XI.h.

I don't know if other devs just symlinked XI.h to XInput.h
already, I happen to be too new/have a different version,
or what. But I know we don't have any tickets about this
that already exist.

Comments before I add said issue? Is something off on my
machine? If not, the solution for my issue will be to modify
CMake so it indicates if we are using XInput.h or XI.h

Vinnie

On Wed, Jun 07, 2017 at 04:05:44AM +0000, Vinnie Simonetti wrote:
> For anyone who compiles FG for X11, have you encountered
> compile issues with Xinput.h not being found?
> 
> I have a clean install of Ubuntu 16.04.02 LTS that I went to
> compile on. After installing everything necessary (gl.h, libgl,
> libglu), CMake completed and I went to build (gcc).

You need to install the xinput development package. Debian-based systems
have this irritating convention of breaking up the header files of
libraries into a separate -dev package. I suppose it's a holdover from a
time when a few hundred header files would take up too much disk space
for users which don't need to compile anything.

Anyway, bottom line: apt-get install libxi-dev

-- 
John Tsiombikas
http://nuclear.mutantstargoat.com/

> Anyway, bottom line: apt-get install libxi-dev

Ah, ok. Well, I'll probably do a small update just so we produce
an error on configuration that xinput.h can't be found.

Vinnie

Hi Vinnie,

On Jun 8, 2017 4:00 AM, "Vinnie Simonetti" <rcm...@ho...> wrote:

> Anyway, bottom line: apt-get install libxi-dev

Ah, ok. Well, I'll probably do a small update just so we produce
an error on configuration that xinput.h can't be found.


That's be great!

Cheers,
Dee