Have been building and minimal VM with just wayland and no X for testing things and wanted to try lightdm. Haven't actually tried with [X] but the error seems pretty clear. The wiki article says "the RazorQt greeter does not offer any configuration options" but building lightdm[qt5] doesn't actually seem to pull in any greeter. Reproducible: Always Steps to Reproduce: 1. Build a minimal VM with profile default/linux/amd64/23.0/desktop 2. emerge lightdm without X `USE="-X gtk qt5" emerge -atv lightdm` 3. Actual Results: x86_64-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -DHAVE_CONFIG_H -DGETTEXT_PACKAGE=\"lightdm-gtk-greeter\" -DLOCALEDIR=\""/usr/share/locale"\" -DGREETER_DATA_DIR=\""/usr/share/lightdm-gtk-greeter"\" -DCONFIG_FILE=\""/etc/lightdm/lightdm-gtk-greeter.conf"\" -DINDICATOR_DIR=\"""\" -DUNITY_INDICATOR_DIR=\"""\" -DAYATANA_INDICATOR_DIR=\"""\" -DSYSTEMD_SERVICE_DIR=\""/usr/lib/systemd/user"\" -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/atk-1.0 -I/usr/include/fribidi -I/usr/include/libpng16 -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/gio-unix-2.0 -I/usr/lib64/libffi/include -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/lightdm-gobject-1 -I/usr/include/gio-unix-2.0 -pthread -I/usr/include/libmount -I/usr/include/blkid -I/usr/lib64/libffi/include -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/libxml2 -march=native -O2 -pipe -c -o lightdm_gtk_greeter-lightdm-gtk-greeter.o `test -f 'lightdm-gtk-greeter.c' || echo './'`lightdm-gtk-greeter.c lightdm-gtk-greeter.c:28:10: fatal error: gdk/gdkx.h: No such file or directory 28 | #include <gdk/gdkx.h> | ^~~~~~~~~~~~ compilation terminated. make[3]: *** [Makefile:596: lightdm_gtk_greeter-lightdm-gtk-greeter.o] Error 1 make[3]: Leaving directory '/var/tmp/portage/x11-misc/lightdm-gtk-greeter-2.0.9/work/lightdm-gtk-greeter-2.0.9/src' make[3]: *** Waiting for unfinished jobs.... make[3]: Entering directory '/var/tmp/portage/x11-misc/lightdm-gtk-greeter-2.0.9/work/lightdm-gtk-greeter-2.0.9/src' x86_64-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -DHAVE_CONFIG_H -DGETTEXT_PACKAGE=\"lightdm-gtk-greeter\" -DLOCALEDIR=\""/usr/share/locale"\" -DGREETER_DATA_DIR=\""/usr/share/lightdm-gtk-greeter"\" -DCONFIG_FILE=\""/etc/lightdm/lightdm-gtk-greeter.conf"\" -DINDICATOR_DIR=\"""\" -DUNITY_INDICATOR_DIR=\"""\" -DAYATANA_INDICATOR_DIR=\"""\" -DSYSTEMD_SERVICE_DIR=\""/usr/lib/systemd/user"\" -I/usr/include/gtk-3.0 -I/usr/include/pango-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/atk-1.0 -I/usr/include/fribidi -I/usr/include/libpng16 -I/usr/include/pixman-1 -I/usr/include/harfbuzz -I/usr/include/freetype2 -I/usr/include/gio-unix-2.0 -I/usr/lib64/libffi/include -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/libmount -I/usr/include/blkid -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/lightdm-gobject-1 -I/usr/include/gio-unix-2.0 -pthread -I/usr/include/libmount -I/usr/include/blkid -I/usr/lib64/libffi/include -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/libxml2 -march=native -O2 -pipe -c -o lightdm_gtk_greeter-greeterbackground.o `test -f 'greeterbackground.c' || echo './'`greeterbackground.c greeterbackground.c:17:10: fatal error: gdk/gdkx.h: No such file or directory 17 | #include <gdk/gdkx.h> | ^~~~~~~~~~~~ compilation terminated. make[3]: *** [Makefile:610: lightdm_gtk_greeter-greeterbackground.o] Error 1 Expected Results: It should probly require gtk+[X] emerge --info: root@virtualtux ~ # emerge --info Portage 3.0.66.1 (python 3.12.8-final-0, default/linux/amd64/23.0/desktop, gcc-14, glibc-2.40-r5, 6.6.62-gentoo-dist x86_64) ================================================================= System uname: Linux-6.6.62-gentoo-dist-x86_64-AMD_Ryzen_7_2700U_with_Radeon_Vega_Mobile_Gfx-with-glibc2.40 KiB Mem: 4004312 total, 2824664 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Wed, 08 Jan 2025 21:00:00 +0000 Head commit of repository gentoo: ea6088a7c4761dc8ba19c778c1d475f97a2958e0 sh bash 5.2_p37 ld GNU ld (Gentoo 2.43 p3) 2.43.1 app-misc/pax-utils: 1.3.8::gentoo app-shells/bash: 5.2_p37::gentoo dev-build/autoconf: 2.72-r1::gentoo dev-build/automake: 1.16.5-r2::gentoo dev-build/cmake: 3.30.5::gentoo dev-build/libtool: 2.4.7-r4::gentoo dev-build/make: 4.4.1-r100::gentoo dev-build/meson: 1.5.2::gentoo dev-lang/perl: 5.40.0::gentoo dev-lang/python: 3.11.11_p1::gentoo, 3.12.8::gentoo, 3.13.0::gentoo dev-lang/rust-bin: 1.82.0-r101::gentoo llvm-core/llvm: 18.1.8-r6::gentoo, 19.1.4::gentoo sys-apps/baselayout: 2.17::gentoo sys-apps/openrc: 0.55.1::gentoo sys-apps/sandbox: 2.39::gentoo sys-devel/binutils: 2.43-r2::gentoo sys-devel/binutils-config: 5.5.2::gentoo sys-devel/gcc: 14.2.1_p20241116::gentoo sys-devel/gcc-config: 2.11::gentoo sys-kernel/linux-headers: 6.6-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.40-r5::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 volatile: False sync-rsync-verify-max-age: 3 sync-rsync-verify-metamanifest: yes sync-rsync-extra-opts: sync-rsync-verify-jobs: 1 local location: /var/db/repos/local masters: gentoo volatile: False Binary Repositories: gentoobinhost priority: 1 sync-uri: https://distfiles.gentoo.org/releases/amd64/binpackages/23.0/x86-64 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="@FREE" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS=" --jobs=3 --load-average=3" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME" FCFLAGS="-march=native -O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync merge-wait multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=native -O2 -pipe" GENTOO_MIRRORS="rsync://128.61.111.9/gentoo rsync://mirrors.mit.edu/gentoo-distfiles/ http://[2606:5480:1000::300:10]/gentoo/" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs" LEX="flex" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" SHELL="/bin/bash" USE="X a52 aac acl acpi alsa amd64 bluetooth branding bzip2 cairo cdda cdr cet crypt dbus dri dts dvd dvdr elogind encode exif flac gdbm gif gpm gui iconv icu ipv6 jpeg kf6compat lcms libnotify libtirpc mad mng mp3 mp4 mpeg multilib ncurses nls ogg opengl openmp pam pango pcre pdf png policykit ppds qml qt6 readline sdl seccomp spell ssl startup-notification svg test-rust tiff truetype udev udisks unicode upower usb vorbis vulkan wayland wxwidgets x264 xattr xcb xft xml xv xvid zlib" ABI_X86="64" ADA_TARGET="gcc_13" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_anon authn_dbm authn_file authz_dbm authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir env expires ext_filter file_cache filter headers include info log_config logio mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax navcom oceanserver oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 tsip tripmate tnt ublox" GUILE_SINGLE_TARGET="3-0" GUILE_TARGETS="3-0" INPUT_DEVICES="libinput" KERNEL="linux" L10N="en-US" LCD_DEVICES="bayrad cfontz glk hd44780 lb216 lcdm001 mtxorb text" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-2" POSTGRES_TARGETS="postgres16" PYTHON_SINGLE_TARGET="python3_12" PYTHON_TARGETS="python3_12" RUBY_TARGETS="ruby32" VIDEO_CARDS="virgl" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, MAKEOPTS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS make.conf: root@virtualtux ~ # cat /etc/portage/make.conf # These settings were set by the catalyst build script that automatically # built this stage. # Please consult /usr/share/portage/config/make.conf.example for a more # detailed example. COMMON_FLAGS="-march=native -O2 -pipe" CFLAGS="${COMMON_FLAGS}" CXXFLAGS="${COMMON_FLAGS}" FCFLAGS="${COMMON_FLAGS}" FFLAGS="${COMMON_FLAGS}" # NOTE: This stage was built with the bindist USE flag enabled # This sets the language of build output to English. # Please keep this setting intact when reporting bugs. LC_MESSAGES=C.utf8 L10N="en-US" # EMERGE_DEFAULT_OPTS is set automatically by livecd-tools autoconfig during first live boot. # This should be equal to number of processors, see "man emerge" for details. EMERGE_DEFAULT_OPTS="${EMERGE_DEFAULT_OPTS} --jobs=3 --load-average=3" GENTOO_MIRRORS="rsync://128.61.111.9/gentoo \ rsync://mirrors.mit.edu/gentoo-distfiles/ \ http://[2606:5480:1000::300:10]/gentoo/" USE="-cups opengl elogind icu wayland dbus -sound -gtk -qt5" VIDEO_CARDS="virgl"
Created attachment 917060 [details] build log
Thanks for reporting, confirmed x11-libs/gtk+ with the required USE for X will fix gtk greeter issue, however we should also add wayland greeter support as well. I'll start some tests to see how feasible this idea is and check QT at the same time.
After looking into the QT5 I have learned that the QT switcher has been moved out into the LxQT project but the USE flag is still required at build time for lightdm to support it. I will leave QT build support in case the LxQt Gentoo team wish to add at a later date and will update the wiki to reflect this.
