kbuild: sync top Makefile with Linux 3.18-rc1
Since Linux 3.15, relative path feature and related fixes,
cleanups have been merged to the top Makefile.
The relative path feature looks stable enough, so let's import it
to U-Boot along with various cleanups.
Commits imported from Linux (some need adjustment) are:
[1] commit 7e1c04779efd by Michal Marek
kbuild: Use relative path for $(objtree)
[2] commit 890676c65d69 by Michal Marek
kbuild: Use relative path when building in the source tree
[3] commit 9da0763bdd82 by Michal Marek
kbuild: Use relative path when building in a subdir of the source tree
[4] commit c2e28dc975ea by Michal Marek
kbuild: Print the name of the build directory
[5] commit 066b7ed95580 by Michal Marek
kbuild: Do not print the build directory with make -s
[6] commit 3f1d9a6cec01 by Michal Marek
kbuild: make -s should be used with kernelrelease/kernelversion/image_name
[7] commit 7ff525712acf by Masahiro Yamada
kbuild: fake the "Entering directory ..." message more simply
[8] commit 745a254322c8 by Masahiro Yamada
kbuild: use $(Q) for sub-make target
[9] commit aa55c8e2f7a3 by Masahiro Yamada
kbuild: handle C=... and M=... after entering into build directory
[10] commit ab7474ea5361 by Borislav Petkov
Kbuild: Ignore GREP_OPTIONS env variable
To use relative path feature, tools/Makefile and scripts/Makefile.autoconf
must be tweaked.
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
diff --git a/scripts/Makefile.autoconf b/scripts/Makefile.autoconf
index ced2b9a..8e9d71f 100644
--- a/scripts/Makefile.autoconf
+++ b/scripts/Makefile.autoconf
@@ -89,9 +89,12 @@
create_symlink:
ifneq ($(KBUILD_SRC),)
$(Q)mkdir -p include/asm
+ $(Q)ln -fsn $(KBUILD_SRC)/arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)) \
+ include/asm/arch
+else
+ $(Q)ln -fsn arch-$(if $(SOC),$(SOC),$(CPU)) \
+ arch/$(ARCH)/include/asm/arch
endif
- $(Q)ln -fsn $(srctree)/arch/$(ARCH)/include/asm/arch-$(if $(SOC),$(SOC),$(CPU)) \
- $(if $(KBUILD_SRC),,arch/$(ARCH)/)include/asm/arch
PHONY += FORCE
FORCE: