u-boot/board/avionic-design/tec-ng/Makefile

#
# (C) Copyright 2013
# Avionic Design GmbH <www.avionic-design.de>
#
# SPDX-License-Identifier:	GPL-2.0+
#

obj-y	:= ../common/tamonten-ng.o

include $(srctree)/board/nvidia/common/common.mk
ARM: tegra: Add the Tamonten™ NG Evaluation Carrier board Add support for the new Tamonten™ NG platform from Avionic Design. Currently only I2C, MMC, USB and ethernet have been tested. Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com> 2013-11-14 09:58:30 +00:00			`#`
			`# (C) Copyright 2013`
			`# Avionic Design GmbH <www.avionic-design.de>`
			`#`
			`# SPDX-License-Identifier: GPL-2.0+`
			`#`

			`obj-y := ../common/tamonten-ng.o`

kbuild: change out-of-tree build This commit changes the working directory where the build process occurs. Before this commit, build process occurred under the source tree for both in-tree and out-of-tree build. That's why we needed to add $(obj) prefix to all generated files in makefiles like follows: $(obj)u-boot.bin: $(obj)u-boot Here, $(obj) is empty for in-tree build, whereas it points to the output directory for out-of-tree build. And our old build system changes the current working directory with "make -C <sub-dir>" syntax when descending into the sub-directories. On the other hand, Kbuild uses a different idea to handle out-of-tree build and directory descending. The build process of Kbuild always occurs under the output tree. When "O=dir/to/store/output/files" is given, the build system changes the current working directory to that directory and restarts the make. Kbuild uses "make -f $(srctree)/scripts/Makefile.build obj=<sub-dir>" syntax for descending into sub-directories. (We can write it like "make $(obj)=<sub-dir>" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Gerhard Sittig <gsi@denx.de> 2014-02-04 08:24:24 +00:00			`include $(srctree)/board/nvidia/common/common.mk`