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Subject[patch 09/12] uml - kbuild: link cmd
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Use the cmd_* syntax to define a command for symlink creations in UML (to
reuse files from other archs).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
---

linux-2.6.11-paolo/arch/um/scripts/Makefile.rules | 3 +++
linux-2.6.11-paolo/arch/um/sys-i386/Makefile | 13 +++++--------
linux-2.6.11-paolo/arch/um/sys-x86_64/Makefile | 16 ++++++++--------
linux-2.6.11-paolo/include/asm-um/signal.h | 2 ++
4 files changed, 18 insertions(+), 16 deletions(-)

diff -puN arch/um/sys-x86_64/Makefile~uml-kbuild-link-cmd arch/um/sys-x86_64/Makefile
--- linux-2.6.11/arch/um/sys-x86_64/Makefile~uml-kbuild-link-cmd 2005-03-21 19:53:36.000000000 +0100
+++ linux-2.6.11-paolo/arch/um/sys-x86_64/Makefile 2005-03-21 19:53:36.000000000 +0100
@@ -14,10 +14,15 @@ include arch/um/scripts/Makefile.rules

SYMLINKS = bitops.c csum-copy.S csum-partial.c csum-wrappers.c memcpy.S \
semaphore.c thunk.S
-SYMLINKS := $(foreach f,$(SYMLINKS),$(src)/$f)

+# this needs to be before the foreach, because clean-files does not accept
+# complete paths like $(src)/$f.
clean-files := $(SYMLINKS)

+targets += $(SYMLINKS)
+
+SYMLINKS := $(foreach f,$(SYMLINKS),$(obj)/$f)
+
bitops.c-dir = lib
csum-copy.S-dir = lib
csum-partial.c-dir = lib
@@ -26,12 +31,7 @@ memcpy.S-dir = lib
semaphore.c-dir = kernel
thunk.S-dir = lib

-define make_link
- -rm -f $1
- ln -sf $(srctree)/arch/x86_64/$($(notdir $1)-dir)/$(notdir $1) $1
-endef
-
-$(SYMLINKS):
- $(call make_link,$@)
+$(SYMLINKS): FORCE
+ $(call if_changed,make_link)

CFLAGS_csum-partial.o := -Dcsum_partial=arch_csum_partial
diff -puN arch/um/sys-i386/Makefile~uml-kbuild-link-cmd arch/um/sys-i386/Makefile
--- linux-2.6.11/arch/um/sys-i386/Makefile~uml-kbuild-link-cmd 2005-03-21 19:53:36.000000000 +0100
+++ linux-2.6.11-paolo/arch/um/sys-i386/Makefile 2005-03-21 19:53:36.000000000 +0100
@@ -14,19 +14,16 @@ SYMLINKS = bitops.c semaphore.c highmem.
# complete paths like $(src)/$f.
clean-files := $(SYMLINKS)

-SYMLINKS := $(foreach f,$(SYMLINKS),$(src)/$f)
+targets += $(SYMLINKS)
+
+SYMLINKS := $(foreach f,$(SYMLINKS),$(obj)/$f)

bitops.c-dir = lib
semaphore.c-dir = kernel
highmem.c-dir = mm
module.c-dir = kernel

-define make_link
- -rm -f $1
- ln -sf $(srctree)/arch/i386/$($(notdir $1)-dir)/$(notdir $1) $1
-endef
-
-$(SYMLINKS):
- $(call make_link,$@)
+$(SYMLINKS): FORCE
+ $(call if_changed,make_link)

subdir- := util
diff -puN arch/um/scripts/Makefile.rules~uml-kbuild-link-cmd arch/um/scripts/Makefile.rules
--- linux-2.6.11/arch/um/scripts/Makefile.rules~uml-kbuild-link-cmd 2005-03-21 19:53:36.000000000 +0100
+++ linux-2.6.11-paolo/arch/um/scripts/Makefile.rules 2005-03-21 19:53:36.000000000 +0100
@@ -8,3 +8,6 @@ USER_OBJS += $(filter %_user.o,$(obj-y)
USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file))

$(USER_OBJS): c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) $(CFLAGS_$(notdir $@))
+
+quiet_cmd_make_link = SYMLINK $@
+cmd_make_link = rm -f $@; ln -sf $(srctree)/arch/$(SUBARCH)/$($(notdir $@)-dir)/$(notdir $@) $@
_
-
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