[PATCH 01/14] kbuild: search arch/$ARCH/include before include/

[Sam Ravnborg]

The namespace used in arch/$ARCH/include is different from
what is used in include/ except for the include/asm directory.

This patch gives the arch/$ARCH/include/asm directory priority
over include/asm.

When we add asm-offsets.h to arch/$ARCH/include/asm/ this
patch makes sure we pick up the arch specific version
and not the one we have in include/asm.

The situation with an asm-offsets.h file located in
both include/asm _and_ arch/$ARCH/include/asm will happen
when we move more files over to include/generated.

This happens because in some cases it is not practical
to rename all users so we simply add a file
in arch/$ARCH/include/asm that includes the generated version.

This is the solution we use for asm-offsets.h as an example.

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
 Makefile |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 9425d1d..a805f5c 100644
--- a/Makefile
+++ b/Makefile
@@ -334,9 +334,8 @@ CFLAGS_GCOV	= -fprofile-arcs -ftest-coverage
 
 # Use LINUXINCLUDE when you must reference the include/ directory.
 # Needed to be compatible with the O= option
-LINUXINCLUDE    := -Iinclude \
+LINUXINCLUDE    := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \
                    $(if $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include) \
-                   -I$(srctree)/arch/$(hdr-arch)/include               \
                    -include include/linux/autoconf.h
 
 KBUILD_CPPFLAGS := -D__KERNEL__
-- 
1.6.2.5

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