mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
9e4140329e
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>
21 lines
580 B
Makefile
21 lines
580 B
Makefile
#
|
|
# AIT cam_enc_4xx board
|
|
# cam_enc_4xx board has 1 bank of 256 MB DDR RAM
|
|
# Physical Address: 8000'0000 to 9000'0000
|
|
#
|
|
# Linux Kernel is expected to be at 8000'8000, entry 8000'8000
|
|
# (mem base + reserved)
|
|
#
|
|
|
|
UBL_CONFIG = $(SRCTREE)/board/$(BOARDDIR)/ublimage.cfg
|
|
ifndef CONFIG_SPL_BUILD
|
|
ALL-y += u-boot.ubl
|
|
else
|
|
# as SPL_TEXT_BASE is not page-aligned, we need for some
|
|
# linkers the -n flag (Do not page align data), to prevent
|
|
# the following error message:
|
|
# arm-linux-ld: u-boot-spl: Not enough room for program headers, try linking
|
|
# with -N
|
|
LDFLAGS_u-boot-spl += -n
|
|
endif
|