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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2014-02-04 17:24:24 +0900
committerTom Rini <trini@ti.com>2014-02-19 11:07:50 -0500
commit9e4140329ee9a787d0f96ac2829d618d47f7973f (patch)
tree6a40432f6f6723ba9ac5309076af17aec3bc0a9b /arch/nds32/config.mk
parentd958002589cb724907e8d4360d546403d1e6b7d8 (diff)
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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>
Diffstat (limited to 'arch/nds32/config.mk')
-rw-r--r--arch/nds32/config.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/nds32/config.mk b/arch/nds32/config.mk
index e93e3a8..550f8a4 100644
--- a/arch/nds32/config.mk
+++ b/arch/nds32/config.mk
@@ -10,7 +10,7 @@
CROSS_COMPILE ?= nds32le-linux-
-CONFIG_STANDALONE_LOAD_ADDR = 0x300000 -T nds32.lds
+CONFIG_STANDALONE_LOAD_ADDR = 0x300000 -T $(srctree)/$(src)/nds32.lds
PLATFORM_RELFLAGS += -fno-strict-aliasing -fno-common -mrelax
PLATFORM_RELFLAGS += -gdwarf-2