build: check for udev >=172
We need udev_device_has_tag() which was introduced in version 172. Document that in README file. Reported-by: Manuel Rüger <mrueg@rueg.eu> Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
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README
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README
@ -7,7 +7,7 @@ console. See kmscon(1) man-page for usage information.
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== Requirements ==
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Kmscon requires the following software:
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- libudev: providing input, video, etc. device hotplug support
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- libudev: providing input, video, etc. device hotplug support (>=v172)
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- libxkbcommon: providing internationalized keyboard handling
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Everything else is optional:
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@ -59,7 +59,7 @@ PKG_CHECK_MODULES([SYSTEMD], [libsystemd-daemon libsystemd-login],
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AC_SUBST(SYSTEMD_CFLAGS)
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AC_SUBST(SYSTEMD_LIBS)
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PKG_CHECK_MODULES([UDEV], [libudev],
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PKG_CHECK_MODULES([UDEV], [libudev >= 172],
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[have_udev=yes], [have_udev=no])
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AC_SUBST(UDEV_CFLAGS)
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AC_SUBST(UDEV_LIBS)
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