base-files:profiles: Moved and updated profiles for Qt/Wayland

Moved the profiles with the environment initialization into a new
sub-folder and activated them by linking to the sub-directory.
The reason for this is, that weston and the qt-compositor need
different environments and we want an easy way of exchanging them.
The wayland related parts have been moved from the qtenv to weston
and qt-compositor.

recipes-core/base-files/base-files/profile_d_qt-compositor.sh

+# Defaults to allow start of graphical applications from the command-line
+
+# In contrast to weston, the qt-compositor can't re-use the
+# socket from a socket unit at the moment. Because of this,
+# the service has to be started manually. Since the service
+# runs as the "qt" user, it provides a socket under /run/user
+# which has to be populated via the WAYLAND_DISPLAY variable.
+export WAYLAND_DISPLAY=/run/user/1001/wayland-0 # UID = qt
+export XDG_RUNTIME_DIR=/run/user/1001

recipes-core/base-files/base-files/profile_d_qtenv.sh → recipes-core/base-files/base-files/profile_d_qt.sh

-# Defaults to allow start of gui tools from the commandline
-export XDG_RUNTIME_DIR=/var/run/user/1000
+# Defaults to allow start of Qt applications from the command-line
 export QT_QPA_FONTDIR=/usr/share/fonts/truetype
 export QT_QPA_PLATFORM=wayland
-

recipes-core/base-files/base-files/profile_d_weston.sh

+# Defaults to allow start of graphical applications from the command-line
+
+# The weston systemd service is activated by a weston socket unit.
+# This socket unit listens on /run/wayland-0 for incoming requests.
+# If it receives a request, it starts the service itself.
+# The service then re-uses the /run/wayland-0 socket which is why
+# setting the WAYLAND_DISPLAY variable to /run/wayland-0 works.
+export WAYLAND_DISPLAY=/run/wayland-0
+export XDG_RUNTIME_DIR=/run/user/1000 # UID = weston

recipes-core/base-files/base-files_%.bbappend

 FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
 
-SRC_URI:append = " file://profile_d_alias.sh \
-                   file://profile_d_qtenv.sh \
-                   "
+SRC_URI:append = " \
+    file://profile_d_alias.sh \
+    file://profile_d_qt-compositor.sh \
+    file://profile_d_qt.sh \
+    file://profile_d_weston.sh \
+"
 
 do_install:append() {
-
     install -d ${D}${sysconfdir}/profile.d
-    install -m 0755 ${WORKDIR}/profile_d_alias.sh ${D}${sysconfdir}/profile.d/alias.sh
-    install -m 0755 ${WORKDIR}/profile_d_qtenv.sh ${D}${sysconfdir}/profile.d/qtenv.sh
+    install -d ${D}${sysconfdir}/profile.d/available
+
+    install -m 0755 ${WORKDIR}/profile_d_alias.sh ${D}${sysconfdir}/profile.d/available/alias.sh
+    install -m 0755 ${WORKDIR}/profile_d_qt-compositor.sh ${D}${sysconfdir}/profile.d/available/qt-compositor.sh
+    install -m 0755 ${WORKDIR}/profile_d_qt.sh ${D}${sysconfdir}/profile.d/available/qt.sh
+    install -m 0755 ${WORKDIR}/profile_d_weston.sh ${D}${sysconfdir}/profile.d/available/weston.sh
 
+    ln -s available/alias.sh ${D}${sysconfdir}/profile.d/alias.sh
+    ln -s available/qt.sh ${D}${sysconfdir}/profile.d/qt.sh
+    ln -s available/weston.sh ${D}${sysconfdir}/profile.d/weston.sh
 }
 
 do_configure:append:mx6ull() {
-
-    echo export QT_QUICK_BACKEND=software >> ${WORKDIR}/profile_d_qtenv.sh
+    echo export QT_QUICK_BACKEND=software >> ${WORKDIR}/profile_d_qt.sh
 }