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kbuild: fix $(src) assignmnet with external modules

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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 <sam@ravnborg.org>
Cc: Tvrtko <tvrtko.ursulin@sophos.com>
Cc: Andrea Arcangeli <andrea@qumranet.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
This commit is contained in:
Sam Ravnborg 2008-05-31 22:28:40 +02:00
parent 73531905ed
commit 96d97f262a
1 changed files with 6 additions and 0 deletions
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6
scripts/Makefile.modpost
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@ -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)