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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 /doc/DocBook
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 'doc/DocBook')
-rw-r--r--doc/DocBook/Makefile6
1 files changed, 2 insertions, 4 deletions
diff --git a/doc/DocBook/Makefile b/doc/DocBook/Makefile
index 29b79d7..aa7c44b 100644
--- a/doc/DocBook/Makefile
+++ b/doc/DocBook/Makefile
@@ -6,8 +6,6 @@
# To add a new book the only step required is to add the book to the
# list of DOCBOOKS.
-include $(TOPDIR)/config.mk
-
DOCBOOKS := fs.xml linker_lists.xml stdio.xml
###
@@ -122,7 +120,7 @@ quiet_cmd_db2pdf = PDF $@
index = index.html
-main_idx = $(index)
+main_idx = doc/DocBook/$(index)
build_main_index = rm -rf $(main_idx); \
echo '<h1>U-Boot Bootloader HTML Documentation</h1>' >> $(main_idx) && \
echo '<h2>U-Boot Version: $(U_BOOT_VERSION)</h2>' >> $(main_idx) && \
@@ -151,7 +149,7 @@ quiet_cmd_db2man = MAN $@
@(which xmlto > /dev/null 2>&1) || \
(echo "*** You need to install xmlto ***"; \
exit 1)
- $(Q)mkdir -p $(obj)man
+ $(Q)mkdir -p $(obj)/man
$(call cmd_db2man)
@touch $@