classes: add devupstream class
This class lets you use BBCLASSEXTEND to add a variant of the recipe that
fetches from an alternative URI (such as git:) instead of a tarball.
For example:
BBCLASSEXTEND = "devupstream:target"
SRC_URI_class-devupstream = "git://git.example.com/example"
SRCREV_class-devupstream = "
abcd1234"
This variant will have DEFAULT_PREFERENCE set to -1 so it needs to be selected
to be used, and any development-specific tweaks can be done with the
class-devupstream override, for example:
DEPENDS_append_class-devupstream = " gperf-native"
do_configure_prepend_class-devupstream() {
touch ${S}/README
}
It currently only supports creating a development variant of the target recipe,
not native or nativesdk. The BBCLASSEXTEND syntax (devupstream:target) was
chosen so that support for native and nativesdk can be added at a later date.
Support for other version control systems such as subversion is limited, as
bitbake's automatic fetch dependencies on for example subversion-native are not
generated.
[ YOCTO #10215 ]
Signed-off-by: Ross Burton <ross.burton@intel.com>
