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* Makefile: make directories by Makefile.buildMasahiro Yamada2013-11-17-0/+7
| | | | Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile: abolish COBJS, SOBJS, etc.Masahiro Yamada2013-11-17-8/+4
| | | | | | | | The support for COBJS, COBJS-y, SOBJS, SOBJS-y, GLCOBJS, GLSOBJS from scripts/Makefile.build. Going forward we need to use Kbuild style consistently. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
* Makefile: support descending down to subdirectoriesMasahiro Yamada2013-10-31-0/+15
| | | | | | | | | | | | | This patch tweaks scripts/Makefile.build to allow the build system to descend into subdirectories like Kbuild. To use this feature, use "obj-y += foo/" syntax. Example: obj-$(CONFIG_FOO) += foo/ Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org>
* Makefile: prepare for using Kbuild-style MakefileMasahiro Yamada2013-10-31-0/+48
Every makefile in sub directories has common lines at the top and the bottom. This commit pushes the common parts into script/Makefile.build. Going forward sub-makefiles only need to describe this part: COBJS := ... COBJS += ... SOBJS := ... But using obj-y is preferable to prepare for switching to Kbuild. The conventional (non-Kbuild) Makefile style is still supported. This is achieved by greping the Makefile before entering into it. U-Boot conventional sub makefiles always include some other makefiles. So the build system searches a line beginning with "include" keyword in the makefile in order to distinguish which style it is. If the Makefile include a "include" line, we assume it is a conventional U-Boot style. Otherwise, it is treated as a Kbuild-style makefile. With this tweak, we can switch sub-makefiles from U-Boot style to Kbuild style little by little. obj-y := foo/ syntax (descending into the sub directory) is not supportd yet. It will be implemented in the upcomming commit. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Simon Glass <sjg@chromium.org> Cc: Tom Rini <trini@ti.com>