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Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/fix-kbuild

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* git://git.kernel.org/pub/scm/linux/kernel/git/sam/fix-kbuild:
  kbuild: fix building with O=.. options
  kbuild: fix building with redirected output.
This commit is contained in:
Linus Torvalds 2007-12-10 10:17:07 -08:00
commit dc3d532a17
2 changed files with 12 additions and 8 deletions
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14
Makefile
View file

@ -108,6 +108,9 @@ endif
PHONY := _all
_all:
# Cancel implicit rules on top Makefile
$(CURDIR)/Makefile Makefile: ;
ifneq ($(KBUILD_OUTPUT),)
# Invoke a second make in the output directory, passing relevant variables
# check that the output directory actually exists
@ -115,13 +118,10 @@ saved-output := $(KBUILD_OUTPUT)
KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
# Check that OUTPUT directory is not the same as where we have kernel src
$(if $(filter-out $(KBUILD_OUTPUT),$(shell /bin/pwd)),, \
$(error Output directory (O=...) specifies kernel src dir))
PHONY += $(MAKECMDGOALS) sub-make
$(filter-out _all sub-make,$(MAKECMDGOALS)) _all: sub-make
$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
$(Q)@:
sub-make: FORCE
@ -291,7 +291,8 @@ export quiet Q KBUILD_VERBOSE
# Look for make include files relative to root of kernel src
MAKEFLAGS += --include-dir=$(srctree)
# We need some generic definitions.
# We need some generic definitions (do not try to remake the file).
$(srctree)/scripts/Kbuild.include: ;
include $(srctree)/scripts/Kbuild.include
# Make variables (CC, etc...)
@ -1560,9 +1561,6 @@ endif # skip-makefile
PHONY += FORCE
FORCE:
# Cancel implicit rules on top Makefile, `-rR' will apply to sub-makes.
Makefile: ;
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
.PHONY: $(PHONY)

6
scripts/mkmakefile
View file

@ -11,6 +11,12 @@
test ! -r $2/Makefile -o -O $2/Makefile || exit 0
# Only overwrite automatically generated Makefiles
# (so we do not overwrite kernel Makefile)
if ! grep -q Automatically $2/Makefile
then
exit 0
fi
echo " GEN $2/Makefile"
cat << EOF > $2/Makefile