image.bbclass: inherit image_types_uboot when needed

Fixed:
MACHINE = "qemuarm"
IMAGE_FSTYPES += "ext3.bz2.u-boot"
[snip]
No IMAGE_CMD defined for IMAGE_FSTYPES entry 'ext3.bz2.u-boot' - possibly invalid type name or missing support class
[snip]

This is because image_types_uboot is not inherited, inherit it when
needed will fix the problem.

(From OE-Core rev: 742a22ab7fd333e99d8701220d5a1db28347b1af)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index 6111f6d266..b10272a415 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -144,6 +144,15 @@ inherit ${IMAGE_TYPE_live}
 IMAGE_TYPE_vm = '${@bb.utils.contains_any("IMAGE_FSTYPES", ["vmdk", "vdi", "qcow2", "hdddirect"], "image-vm", "", d)}'
 inherit ${IMAGE_TYPE_vm}
 
+def build_uboot(d):
+    if 'u-boot' in (d.getVar('IMAGE_FSTYPES', True) or ''):
+        return "image_types_uboot"
+    else:
+        return ""
+
+IMAGE_TYPE_uboot = "${@build_uboot(d)}"
+inherit ${IMAGE_TYPE_uboot}
+
 python () {
     deps = " " + imagetypes_getdepends(d)
     d.appendVarFlag('do_rootfs', 'depends', deps)