[GIT PULL] fix kbuild regression - Kernel

Hi Linus.

Please pull from:

ssh://master.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes.git


Sam


To get the following fix:

Sam Ravnborg (1):
kbuild: fix $(src) assignmnet with external modules

When we introduced support for KBUILD_EXTRA_SYMBOLS
we started to include the externam module's kbuild
file when doing the final modpost step.

As external modules often do:
ccflags-y := -I$(src)

We had problems because $(src) was unassinged and
gcc then used the next parameter for -I resulting in
strange build failures.

Fix is to assign $(src) and $(obj) when building
external modules.

This fixes: http://bugzilla.kernel.org/show_bug.cgi?id=10798

Signed-off-by: Sam Ravnborg
Cc: Tvrtko
Cc: Andrea Arcangeli
Cc: "Rafael J. Wysocki"

scripts/Makefile.modpost | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index a098a04..17092d6 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -43,7 +43,13 @@ _modpost: __modpost
include include/config/auto.conf
include scripts/Kbuild.include

+# When building external modules load the Kbuild file to retreive EXTRA_SYMBOLS info
ifneq ($(KBUILD_EXTMOD),)
+
+# set src + obj - they may be used when building the .mod.c file
+obj := $(KBUILD_EXTMOD)
+src := $(obj)
+
# Include the module's Makefile to find KBUILD_EXTRA_SYMBOLS
include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
$(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
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