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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 /tools/Makefile
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 'tools/Makefile')
-rw-r--r--tools/Makefile18
1 files changed, 9 insertions, 9 deletions
diff --git a/tools/Makefile b/tools/Makefile
index 21341b7..9b19dcb 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -142,8 +142,8 @@ HOSTCFLAGS_sha1.o := -pedantic
always := $(hostprogs-y)
# Generated LCD/video logo
-LOGO_H = $(OBJTREE)/include/bmp_logo.h
-LOGO_DATA_H = $(OBJTREE)/include/bmp_logo_data.h
+LOGO_H = $(objtree)/include/bmp_logo.h
+LOGO_DATA_H = $(objtree)/include/bmp_logo_data.h
LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_H)
LOGO-$(CONFIG_LCD_LOGO) += $(LOGO_DATA_H)
LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_H)
@@ -151,14 +151,14 @@ LOGO-$(CONFIG_VIDEO_LOGO) += $(LOGO_DATA_H)
# Generic logo
ifeq ($(LOGO_BMP),)
-LOGO_BMP= logos/denx.bmp
+LOGO_BMP= $(srctree)/$(src)/logos/denx.bmp
# Use board logo and fallback to vendor
ifneq ($(wildcard logos/$(BOARD).bmp),)
-LOGO_BMP= logos/$(BOARD).bmp
+LOGO_BMP= $(srctree)/$(src)/logos/$(BOARD).bmp
else
ifneq ($(wildcard logos/$(VENDOR).bmp),)
-LOGO_BMP= logos/$(VENDOR).bmp
+LOGO_BMP= $(srctree)/$(src)/logos/$(VENDOR).bmp
endif
endif
@@ -187,8 +187,8 @@ all: $(LOGO-y)
subdir-y := kernel-doc
-$(LOGO_H): $(obj)bmp_logo $(LOGO_BMP)
- $(obj)./bmp_logo --gen-info $(LOGO_BMP) > $@
+$(LOGO_H): $(obj)/bmp_logo $(LOGO_BMP)
+ $(obj)/bmp_logo --gen-info $(LOGO_BMP) > $@
-$(LOGO_DATA_H): $(obj)bmp_logo $(LOGO_BMP)
- $(obj)./bmp_logo --gen-data $(LOGO_BMP) > $@
+$(LOGO_DATA_H): $(obj)/bmp_logo $(LOGO_BMP)
+ $(obj)/bmp_logo --gen-data $(LOGO_BMP) > $@