arm-trusted-firmware: Handle out-of-tree builds

Handle building where B != S, allowing for the source and build
artefacts to be separated. This allows for out-of-tree building, and
enabling use of EXTERNALSRC such that the build artefacts are not
written into the EXTERNALSRC directory.

Signed-off-by: Nathan Rossi <nathan@nathanrossi.com>
Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha@xilinx.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bb b/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bb
index 4cd9cf3f..bead4672 100644
--- a/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bb
+++ b/recipes-bsp/arm-trusted-firmware/arm-trusted-firmware_git.bb
@@ -10,6 +10,7 @@ inherit deploy
 DEPENDS += "u-boot-mkimage-native"
 
 S = "${WORKDIR}/git"
+B = "${WORKDIR}/build"
 
 BRANCH = "master"
 SRC_URI = "git://github.com/Xilinx/arm-trusted-firmware.git;protocol=https;branch=${BRANCH}"
@@ -36,14 +37,14 @@ do_configure() {
 }
 
 do_compile() {
-        oe_runmake PLAT=${PLATFORM} RESET_TO_BL31=1 bl31
+        oe_runmake -C ${S} BUILD_BASE=${B} PLAT=${PLATFORM} RESET_TO_BL31=1 bl31
 }
 
 do_install() {
         :
 }
 
-OUTPUT_DIR = "${S}/build/${PLATFORM}/release"
+OUTPUT_DIR = "${B}/${PLATFORM}/release"
 
 do_deploy() {
         install -d ${DEPLOYDIR}