<div dir="ltr"><div class="gmail_default"><div class="gmail_default">/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/../../../../x86_64-pc-linux-gnu/bin/ld: compositor/weston-main.o: undefined reference to symbol 'udev_device_has_tag@@LIBUDEV_183'</div><div class="gmail_default">/usr/lib/libudev.so.1: error adding symbols: DSO missing from command line</div><div class="gmail_default">collect2: error: ld returned 1 exit status</div><div class="gmail_default">make[1]: *** [Makefile:4126: weston] Error 1</div><div class="gmail_default" style="font-size:large"><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Feb 5, 2017 at 7:30 PM, Jiayi Zhao <span dir="ltr"><<a href="mailto:jeff.no.zhao@gmail.com" target="_blank">jeff.no.zhao@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-size:large"></div><div class="gmail_default">Hmmm, after using udev_device_has_tag(<wbr>udev_device, "ID_INPUT_TOUCHPAD"),</div><div class="gmail_default">I'm getting linking errors. Quick google of this leads to: libraries on the command line should be after the object files being compiled.</div><div class="gmail_default">Is this a bug?</div><div><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Feb 5, 2017 at 7:20 PM, Peter Hutterer <span dir="ltr"><<a href="mailto:peter.hutterer@who-t.net" target="_blank">peter.hutterer@who-t.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="m_-9004883927419932038gmail-">On Sun, Feb 05, 2017 at 07:13:04PM -0500, Jiayi Zhao wrote:<br> > How would ID_INPUT_TOUCHPAD work?<br> > I have something like udev_device_has_tag(udev_devic<wbr>e, ID_INPUT_TOUCHPAD)<br> > Unfortunately, I'm not sure where this constant is declared and its unable<br> > to find the tag. :/<br> <br> </span>it's a udev property name, so use it as a string, not a #define.<br> value is either 1 or 0, so you do need to check for validity.<br> <br> Cheers,<br> Peter<br> <div class="m_-9004883927419932038gmail-HOEnZb"><div class="m_-9004883927419932038gmail-h5"><br> > On Jan 29, 2017 4:42 PM, "Peter Hutterer" <<a href="mailto:peter.hutterer@who-t.net" target="_blank">peter.hutterer@who-t.net</a>> wrote:<br> ><br> > > On Fri, Jan 27, 2017 at 09:46:49PM -0500, Jiayi Zhao wrote:<br> > > > [libinput]<br> > > > natural_scroll=true<br> > > ><br> > > > CHANGES:<br> > > > - libinput_device_config_scroll_<wbr>has_natural_scroll() is no longer<br> > > compared to != 0<br> > > > - added configuration option to weston.ini man page<br> > > ><br> > > > Signed-off-by: Jiayi Zhao <<a href="mailto:jeff.no.zhao@gmail.com" target="_blank">jeff.no.zhao@gmail.com</a>><br> > > > ---<br> > > > compositor/main.c | 13 +++++++++++++<br> > > > man/weston.ini.man | 3 +++<br> > > > <a href="http://weston.ini.in" rel="noreferrer" target="_blank">weston.ini.in</a> | 1 +<br> > > > 3 files changed, 17 insertions(+)<br> > > ><br> > > > diff --git a/compositor/main.c b/compositor/main.c<br> > > > index 4bd6e68..84bb8dd 100644<br> > > > --- a/compositor/main.c<br> > > > +++ b/compositor/main.c<br> > > > @@ -1133,6 +1133,8 @@ configure_input_device(struct weston_compositor<br> > > *compositor,<br> > > > struct weston_config *config = wet_get_config(compositor);<br> > > > int enable_tap;<br> > > > int enable_tap_default;<br> > > > + int natural_scroll;<br> > > > + int natural_scroll_default;<br> > > ><br> > > > s = weston_config_get_section(conf<wbr>ig,<br> > > > "libinput", NULL, NULL);<br> > > > @@ -1147,6 +1149,17 @@ configure_input_device(struct weston_compositor<br> > > *compositor,<br> > > > libinput_device_config_tap_se<wbr>t_enabled(device,<br> > > > enable_tap);<br> > > > }<br> > > > +<br> > > > + if (libinput_device_config_scroll<wbr>_has_natural_scroll(device)) {<br> > > > + natural_scroll_default =<br> > > > + libinput_device_config_<wbr>scroll_get_default_natural_<br> > > scroll_enabled(<br> > > > + device);<br> > > > + weston_config_section_get_boo<wbr>l(s, "natural_scroll",<br> > > > + &natural_scroll,<br> > > > + natural_scroll_default);<br> > > > + libinput_device_config_<wbr>scroll_set_natural_scroll_<br> > > enabled(device,<br> > > > + natural_scroll);<br> > > > + }<br> > ><br> > > libinput exposes natural scrolling on mice as well and with this code<br> > > you're enabling it on any device that has the option. so your mouse<br> > > wheels will be upside down too when you enable this. That's probably not<br> > > what you intended, but if so, prepare for angry emails :)<br> > ><br> > > there are two options to work around this:<br> > > * check the udev device for ID_INPUT_TOUCHPAD<br> > > * assume anything that has tapping is a touchpad<br> > ><br> > > Cheers,<br> > > Peter<br> > ><br> > > > }<br> > > ><br> > > > static void<br> > > > diff --git a/man/weston.ini.man b/man/weston.ini.man<br> > > > index 2edb085..62e0f92 100644<br> > > > --- a/man/weston.ini.man<br> > > > +++ b/man/weston.ini.man<br> > > > @@ -187,6 +187,9 @@ Available configuration are:<br> > > > .TP 7<br> > > > .BI "enable_tap=" true<br> > > > enables tap to click on touchpad devices<br> > > > +.TP 7<br> > > > +.BI "natural_scroll=" true<br> > > > +enables natural scrolling on touchpad devices<br> > > > .RS<br> > > > .PP<br> > > ><br> > > > diff --git a/<a href="http://weston.ini.in" rel="noreferrer" target="_blank">weston.ini.in</a> b/<a href="http://weston.ini.in" rel="noreferrer" target="_blank">weston.ini.in</a><br> > > > index 257c4ec..f957ec6 100644<br> > > > --- a/<a href="http://weston.ini.in" rel="noreferrer" target="_blank">weston.ini.in</a><br> > > > +++ b/<a href="http://weston.ini.in" rel="noreferrer" target="_blank">weston.ini.in</a><br> > > > @@ -61,6 +61,7 @@ path=@libexecdir@/weston-keybo<wbr>ard<br> > > ><br> > > > #[libinput]<br> > > > #enable_tap=true<br> > > > +#natural_scroll=false<br> > > ><br> > > > #[touchpad]<br> > > > #constant_accel_factor = 50<br> > > > --<br> > > > 2.10.2<br> > > ><br> > > > ______________________________<wbr>_________________<br> > > > wayland-devel mailing list<br> > > > <a href="mailto:wayland-devel@lists.freedesktop.org" target="_blank">wayland-devel@lists.freedeskto<wbr>p.org</a><br> > > > <a href="https://lists.freedesktop.org/mailman/listinfo/wayland-devel" rel="noreferrer" target="_blank">https://lists.freedesktop.org/<wbr>mailman/listinfo/wayland-devel</a><br> > > ><br> > ><br> </div></div></blockquote></div><br></div></div></div></div> </blockquote></div><br></div>