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 $(obj)=<sub-dir>" with a shorthand.) This means the current working directory is always the top of the output directory. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Tested-by: Gerhard Sittig <gsi@denx.de>
19 lines
477 B
Makefile
19 lines
477 B
Makefile
#
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# (C) Copyright 2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# (C) Copyright 2003
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# Pavel Bartusek, Sysgo Real-Time Solutions AG, pba@sysgo.de
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#
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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obj-y := ubifs.o io.o super.o sb.o master.o lpt.o
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obj-y += lpt_commit.o scan.o lprops.o
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obj-y += tnc.o tnc_misc.o debug.o crc16.o budget.o
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obj-y += log.o orphan.o recovery.o replay.o
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# SEE README.arm-unaligned-accesses
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$(obj)/super.o: CFLAGS += $(PLATFORM_NO_UNALIGNED)
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