[OE-core] [PATCH RFC] pixbufcache: Use sceneQueueComplete event to simplify usage
Richard Purdie
richard.purdie at linuxfoundation.org
Sat Aug 2 08:54:54 UTC 2014
[This is an RFC which depends on a patch to bitbake to operate]
Currently, we have a mess of dependencies for pixbufcache and even then
it breaks since they might be controlled by PACKAGECONFIG.
Instead, this patch proposes an alternative approach where we allow
"fixups" from a sceneQueueComplete() event at the end of the setscene
process. We signal the need for these using simply stamp files.
The one downside is that the processing code needs to be in a global
event handler like base.bbclass rather than pixbufcache.bbclass but this
is probably a price worth paying to avoid the dependency mess?
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 4972a98..cd4debe 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -284,8 +284,10 @@ def buildcfg_neededvars(d):
bb.fatal('The following variable(s) were not set: %s\nPlease set them directly, or choose a MACHINE or DISTRO that sets them.' % ', '.join(pesteruser))
addhandler base_eventhandler
-base_eventhandler[eventmask] = "bb.event.ConfigParsed bb.event.BuildStarted bb.event.RecipePreFinalise"
+base_eventhandler[eventmask] = "bb.event.ConfigParsed bb.event.BuildStarted bb.event.RecipePreFinalise bb.runqueue.sceneQueueComplete"
python base_eventhandler() {
+ import bb.runqueue
+
if isinstance(e, bb.event.ConfigParsed):
e.data.setVar("NATIVELSBSTRING", lsb_distro_identifier(e.data))
e.data.setVar('BB_VERSION', bb.__version__)
@@ -324,6 +326,15 @@ python base_eventhandler() {
e.data.delVar("PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}g++")
e.data.delVar("PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}compilerlibs")
+ if isinstance(e, bb.runqueue.sceneQueueComplete):
+ pbfile = e.data.expand("${STAGING_DIR}/needpixbuf")
+ if os.path.exists(pbfile):
+ bb.build.exec_func("gdkpixbuf_complete", e.data)
+ os.remove(pbfile)
+}
+
+gdkpixbuf_complete() {
+ GDK_PIXBUF_FATAL_LOADER=1 ${STAGING_BINDIR_NATIVE}/gdk-pixbuf-query-loaders --update-cache || exit 1
}
addtask configure after do_patch
diff --git a/meta/classes/pixbufcache.bbclass b/meta/classes/pixbufcache.bbclass
index b8d75bd..19b4982 100644
--- a/meta/classes/pixbufcache.bbclass
+++ b/meta/classes/pixbufcache.bbclass
@@ -52,21 +52,10 @@ python populate_packages_append() {
#
SSTATEPOSTINSTFUNCS_append_class-native = " pixbufcache_sstate_postinst"
+# See base.bbclass for the other half of this
pixbufcache_sstate_postinst() {
if [ "${BB_CURRENTTASK}" = "populate_sysroot" -o "${BB_CURRENTTASK}" = "populate_sysroot_setscene" ]
then
- GDK_PIXBUF_FATAL_LOADER=1 gdk-pixbuf-query-loaders --update-cache || exit 1
+ touch ${STAGING_DIR}/needpixbuf
fi
}
-
-# Add all of the dependencies of gdk-pixbuf as dependencies of
-# do_populate_sysroot_setscene so that pixbufcache_sstate_postinst can work
-# (otherwise gdk-pixbuf-query-loaders may not exist or link). Only add
-# gdk-pixbuf-native if we're not building gdk-pixbuf itself.
-#
-# Packages that use this class should extend this variable with their runtime
-# dependencies.
-PIXBUFCACHE_SYSROOT_DEPS = ""
-PIXBUFCACHE_SYSROOT_DEPS_class-native = "${@['gdk-pixbuf-native:do_populate_sysroot_setscene', '']['${BPN}' == 'gdk-pixbuf']} glib-2.0-native:do_populate_sysroot_setscene libffi-native:do_populate_sysroot_setscene libpng-native:do_populate_sysroot_setscene zlib-native:do_populate_sysroot_setscene"
-do_populate_sysroot_setscene[depends] += "${PIXBUFCACHE_SYSROOT_DEPS}"
-do_populate_sysroot[depends] += "${@d.getVar('PIXBUFCACHE_SYSROOT_DEPS', True).replace('_setscene','')}"
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