Hi Yamada-san, On 27/02/2019 12:32, Masahiro Yamada wrote: > Hi Kieran, > > > On Wed, Feb 27, 2019 at 8:56 PM Kieran Bingham > <kieran.bingham@xxxxxxxxxxxxxxxx> wrote: >> >> Hi Yamada-san, >> >> On 19/02/2019 09:33, Masahiro Yamada wrote: >>> gdb-scripts is not a real object, but (ab)used like a phony target. >>> >>> Rewrite the code in a more Kbuild-ish way. Add symlinks to extra-y >>> and use if_changed. >>> >>> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx> >>> --- >>> >>> scripts/gdb/linux/Makefile | 18 +++++++++++------- >>> 1 file changed, 11 insertions(+), 7 deletions(-) >>> >>> diff --git a/scripts/gdb/linux/Makefile b/scripts/gdb/linux/Makefile >>> index 7545806..3df395a 100644 >>> --- a/scripts/gdb/linux/Makefile >>> +++ b/scripts/gdb/linux/Makefile >>> @@ -1,13 +1,17 @@ >>> # SPDX-License-Identifier: GPL-2.0 >>> -always := gdb-scripts >>> >>> -SRCTREE := $(abspath $(srctree)) >>> - >>> -$(obj)/gdb-scripts: >>> ifneq ($(KBUILD_SRC),) >>> - $(Q)ln -fsn $(SRCTREE)/$(obj)/*.py $(objtree)/$(obj) >>> + >>> +symlinks := $(patsubst $(srctree)/$(src)/%,%,$(wildcard $(srctree)/$(src)/*.py)) >>> + >>> +quiet_cmd_symlink = SYMLINK $@ >>> + cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(abspath $(srctree))/$(src)/%,$@) $@ >>> + >>> +extra-y += $(symlinks) >>> +$(addprefix $(obj)/, $(symlinks)): FORCE >>> + $(call if_changed,symlink) >>> + >>> endif >>> - @: >>> >>> quiet_cmd_gen_constants_py = GEN $@ >>> cmd_gen_constants_py = \ >>> @@ -18,4 +22,4 @@ extra-y += constants.py >>> $(obj)/constants.py: $(src)/constants.py.in FORCE >>> $(call if_changed_dep,gen_constants_py) >>> >>> -clean-files := *.pyc *.pyo $(if $(KBUILD_SRC),*.py) >>> +clean-files := *.pyc *.pyo >> >> Perhaps this answers my earlier question. >> I guess the extra-y hook is somehow handling the clean up of these files? >> >> Aha - yes, I've just found it in >> >> Documentation/kbuild/makefiles.txt: >>> === 5 Kbuild clean infrastructure >>> ... >>> Kbuild knows targets listed in $(hostprogs-y), $(hostprogs-m), $(always), $(extra-y) and $(targets). They are all deleted during "make clean". >> >> Perfect, so this is much better. > > Exactly. > > If you are interested in the real code, > see scripts/Makefile.clean > > > __clean-files := $(extra-y) $(extra-m) $(extra-) \ > $(always) $(targets) $(clean-files) \ > $(hostprogs-y) $(hostprogs-m) $(hostprogs-) \ > $(hostlibs-y) $(hostlibs-m) $(hostlibs-) \ > $(hostcxxlibs-y) $(hostcxxlibs-m) > Thank you - that makes it very clear. Thanks again for you work :) -- Kieran > >> Reviewed-by: Kieran Bingham <kieran.bingham@xxxxxxxxxxxxxxxx> >> >> -- >> Regards >> -- >> Kieran > > > -- Regards -- Kieran
