Masahiro Yamada 9e4140329e 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>		2014-02-19 11:07:50 -05:00
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fpu	kbuild: change out-of-tree build	2014-02-19 11:07:50 -05:00
andi.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
asm.S	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
b.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
cmp.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
cmpi.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
complex.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
cpu.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
cpu_asm.h	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
cr.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
load.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
Makefile	post: descend only when CONFIG_HAS_POST is defined	2013-12-13 09:17:33 -05:00
multi.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
rlwimi.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
rlwinm.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
rlwnm.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
srawi.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
store.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
string.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
three.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
threei.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
threex.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00
two.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
twox.c	Coding Style cleanup: replace leading SPACEs by TABs	2013-10-14 16:06:54 -04:00