classes: Add recipe class to overrides

We have currently no override to detect a recipe being build cross, crosssdk
or for target at times we can use virtclass-native and virtclass-nativesdk to
override stuff in recipes but we dont have way to modify a variables
based on recipe type always.

This patch adds in such an override and in particular makes a target override
class available.

With this change now we can say:

EXTRA_OECONF_class-target = "...."
EXTRA_OECONF_class-native = "..."
EXTRA_OECONF_class-nativesdk = "..."
EXTRA_OECONF_class-crosssdk= "..."

Based of an original patch by Khem Raj

(From OE-Core rev: cf332fd9bf685f6d42b11c1f0c37b934c7f5bcbe)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/classes/cross.bbclass b/meta/classes/cross.bbclass
index 8da30483f4..e998307236 100644
--- a/meta/classes/cross.bbclass
+++ b/meta/classes/cross.bbclass
@@ -4,6 +4,7 @@ inherit relocatable
 # no need for them to be a direct target of 'world'
 EXCLUDE_FROM_WORLD = "1"
 
+CLASSOVERRIDE = "class-cross"
 PACKAGES = ""
 PACKAGES_DYNAMIC = ""
 PACKAGES_DYNAMIC_virtclass-native = ""