Re: gtk configure fails to detect XInput2.h

[Sam James]

> On 31 Jul 2022, at 00:16, alexandre schenberg <ale.schenberg@yandex.com> 
> wrote:
> 
> Hi. I am currently running the configure script of gtk. It stops with the 
> message: "configure: error: *** XInput2 extension not found. Check 
> 'config.log' for more details.". Then I checked config.log. And there it is 
> says: "configure:23790: error: *** XInput2 extension not found. Check 
> 'config.log' for more details."  No very useful is it?
> 
> Then I did a little of online research and figured out that this extension 
> belongs to the libXi package. I built it and installed it to a dir.
> 
> Finally, I executed the configure script again, passing the include dir to 
> configure through the CPPFLAGS.
> 
> CPPFLAGS="-I/media/34GB/Arquivos-de-Programas-Linux/xorg/X11-1.3.6/include/ 
> -I/media/34GB/Arquivos-de-Programas-Linux/xorg/Xorgproto-2018.1/include/ 
> -I/media/34GB/Arquivos-de-Programas-Linux/xorg/Xi-1.5.0/include/"
> 
> And the result was: "configure: error: *** XInput2 extension not found. Check 
> 'config.log' for more details." I checked the include dir of Xi. Inside it 
> there is a X11 dir, inside of it an extensions dir, and inside it, XInput.h 
> and XInput2.h. So, it seems ok to me
> 
> I then gave alook at configure.ac. This is what: "grep XInput* configure.ac" 
> returned:
> 
> # set up things for XInput
>    AC_CHECK_HEADER(X11/extensions/XInput2.h,
>                    AC_DEFINE(XINPUT_2, 1, [Define to 1 if XInput 2.0 is 
> available]))
>                       AC_DEFINE(XINPUT_2_2, 1, [Define to 1 if XInput 2.2 is 
> available]),
>                       [[#include <X11/extensions/XInput2.h>]])])
>        [AC_MSG_ERROR([*** XInput2 extension not found. Check 'config.log' for 
> more details.])])
> 
> It might be a version issue? I gave a quick glance inside XInput2.h and did 
> not see any definition inside it.
> From libXi.la there is:
> 
> # Version information for libXi.
> current=7
> age=1
> revision=0
> 
> and xi.pc says:
> Version: 1.5.0
> 
> So, any ideas? Thanks for your time.
> 

You should report this issue to the GTK maintainers. That is their own 
configure check. Also, you haven't shared the full output of configure and 
config.log.

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