uboot-sign: do_concat_dtb(): cd to $B

Prior to running oe_runmake make sure $B is the cwd. This is required
due to bitbake commit 67a7b8b021badc17d8fdf447c250e79d291e75f7
"build: don't use $B as the default cwd for functions".

Without this change, do_concat_dtb fails with:
| ERROR: oe_runmake failed
| make: *** No targets specified and no makefile found.  Stop.

(From OE-Core rev: 6dca3dee34b587157d0d49c590a177ff1dabb374)

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/classes/uboot-sign.bbclass b/meta/classes/uboot-sign.bbclass
index d56ad8e07c..3c56db8872 100644
--- a/meta/classes/uboot-sign.bbclass
+++ b/meta/classes/uboot-sign.bbclass
@@ -66,6 +66,7 @@ do_concat_dtb () {
         if [ "x${UBOOT_SIGN_ENABLE}" = "x1" ]; then
                 if [ "x${UBOOT_SUFFIX}" = "ximg" -o "x${UBOOT_SUFFIX}" = "xrom" ] && \
                         [ -e "${DEPLOYDIR}/${UBOOT_DTB_IMAGE}" ]; then
+                        cd ${B}
                         oe_runmake EXT_DTB=${DEPLOYDIR}/${UBOOT_DTB_IMAGE}
                         install ${S}/${UBOOT_BINARY} ${DEPLOYDIR}/${UBOOT_IMAGE}
                         install ${S}/${UBOOT_BINARY} ${DEPLOY_DIR_IMAGE}/${UBOOT_IMAGE}