meta-systemd: select recipes based on active collections

Recipes of inactivate layers must been BBMASK'ed to prevent build errors.
This is very unflexible and causes high maintenance effort for keeping
the project configuration in sync with the actual meta-systemd layout.

With this patch, the .bbappend files within the meta-* directories are
ignored unless the corresponding collection has been selected.  As it
relies on the order of BBFILES and BBFILE_COLLECTIONS expansion, a
sanity check has been added which aborts the build when assumptions do
not apply anymore.

MJ: added meta-xfce as it was created later
MJ: fixed expression for oe-core bbappends

Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

2 files changed, 19 insertions, 1 deletions

diff --git a/meta-systemd/conf/layer.conf b/meta-systemd/conf/layer.conf
index 3310abc8a..d06cfa138 100644
--- a/meta-systemd/conf/layer.conf
+++ b/meta-systemd/conf/layer.conf
@@ -12,7 +12,23 @@
 BBPATH .= ":${LAYERDIR}"
 
 # We have a recipes directory, add to BBFILES
-BBFILES += "${LAYERDIR}/recipes-*/*/*.bb ${LAYERDIR}/*/recipes-*/*/*.bbappend"
+BBFILES += "\
+  ${LAYERDIR}/recipes-*/*/*.bb \
+  ${LAYERDIR}/oe-core/recipes-*/*/*.bbappend \
+  ${LAYERDIR}/meta-oe/recipes-*/*/*.bbappend \
+  ${@base_contains('BBFILE_COLLECTIONS', 'systemd-layer',\
+                   '', '${LAYERDIR}/invalid.bb', d)} \
+  ${@base_contains('BBFILE_COLLECTIONS', 'gnome-layer',\
+                   '${LAYERDIR}/meta-gnome/recipes-*/*/*.bbappend', '', d)} \
+  ${@base_contains('BBFILE_COLLECTIONS', 'efl-layer',\
+                   '${LAYERDIR}/meta-efl/recipes-*/*/*.bbappend', '', d)} \
+  ${@base_contains('BBFILE_COLLECTIONS', 'multimedia-layer',\
+                   '${LAYERDIR}/meta-multimedia/recipes-*/*/*.bbappend', '', d)} \
+  ${@base_contains('BBFILE_COLLECTIONS', 'networking',\
+                   '${LAYERDIR}/meta-networking/recipes-*/*/*.bbappend', '', d)} \
+  ${@base_contains('BBFILE_COLLECTIONS', 'xfce-layer',\
+                   '${LAYERDIR}/meta-xfce/recipes-*/*/*.bbappend', '', d)} \
+"
 
 BBFILE_COLLECTIONS += "systemd-layer"
 BBFILE_PATTERN_systemd-layer := "^${LAYERDIR}/"
diff --git a/meta-systemd/invalid.bb b/meta-systemd/invalid.bb
new file mode 100644
index 000000000..b16787bce
--- /dev/null
+++ b/meta-systemd/invalid.bb
@@ -0,0 +1,2 @@
+Content of this file is invalid and is used by conf/layer.conf to
+ensure that BBFILES is expanded after BBFILE_COLLECTIONS.