[OE-core] [PATCH v3] distro_features_check.bbclass: Allow checking of required/conflicting features
Otavio Salvador
otavio at ossystems.com.br
Thu Aug 1 22:13:57 UTC 2013
This add support to list required/confliting distro features for a
recipe; this avoids user mistake when building recipes/images which
would not work depending on DISTRO_FEATURES option set.
Adding:
,----[ Use example ]
| inherit distro_features_check
|
| REQUIRED_DISTRO_FEATURES = "x11"
| CONFLICT_DISTRO_FEATURES_mx6 = "wayland"
`----
In the image recipe allow us to make clear to user that this image
needs X11 and /cannot/ be build with Wayland support in i.MX6
platforms, for example.
Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
---
Changes in v3:
- Move code from base.bbclass to distro_features_check.bbclass
- Rework code
- Rework commit log
Changes in v2:
- Rename to REQUIRED_DISTRO_FEATURES;
- Remove spurious bb.note;
- Rewrote error message;
meta/classes/distro_features_check.bbclass | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
create mode 100644 meta/classes/distro_features_check.bbclass
diff --git a/meta/classes/distro_features_check.bbclass b/meta/classes/distro_features_check.bbclass
new file mode 100644
index 0000000..61b11b7
--- /dev/null
+++ b/meta/classes/distro_features_check.bbclass
@@ -0,0 +1,28 @@
+# Allow checking of required and conflicting DISTRO_FEATURES
+#
+# REQUIRED_DISTRO_FEATURES: ensure every item on this list is included
+# in DISTRO_FEATURES.
+# CONFLICT_DISTRO_FEATURES: ensure no item in this list is included in
+# DISTRO_FEATURES.
+#
+# Copyright 2013 (C) O.S. Systems Software LTDA.
+
+python () {
+ required_distro_features = d.getVar('REQUIRED_DISTRO_FEATURES', True)
+ if required_distro_features:
+ required_distro_features = required_distro_features.split()
+ distro_features = (d.getVar('DISTRO_FEATURES', True) or "").split()
+ for f in required_distro_features:
+ if f in distro_features:
+ break
+ else:
+ raise bb.parse.SkipPackage("missing required distro feature %s (not in DISTRO_FEATURES)" % required_distro_features)
+
+ conflict_distro_features = d.getVar('CONFLICT_DISTRO_FEATURES', True)
+ if conflict_distro_features:
+ conflict_distro_features = conflict_distro_features.split()
+ distro_features = (d.getVar('DISTRO_FEATURES', True) or "").split()
+ for f in conflict_distro_features:
+ if f in distro_features:
+ raise bb.parse.SkipPackage("conflicting distro feature %s (in DISTRO_FEATURES)" % conflict_distro_features)
+}
--
1.8.3.2
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