Re: [Qemu-devel] [PATCH V9 2/8] Buildsystem clean tests directory clearly

[Wenchao Xia <xiawenc@linux.vnet.ibm.com>]

于 2012-11-16 19:16, Paolo Bonzini 写道:
> Il 16/11/2012 12:01, Wenchao Xia ha scritto:
>>>
>>>
>>> ifneq ($(wildcard config-host.mak),)
>>> include $(SRC_PATH)/tests/Makefile
>>> endif
>>>
>>> to
>>>
>>> -include $(SRC_PATH)/tests/Makefile
>>>
>>> ?
>>>
>>    yes, but original author seems not include tests/Makefile in
>> this condition on purpose, so using MAKEFILES to keep it unchanged.
>
> git blame tells you that the ifneq was added by commit e454e2e
> (Makefile: Exclude tests/Makefile in unconfigured tree, 2012-01-17).
>
> Instead of the ifneq, I proposed to use a minus in front of the include
> directive.  It will avoid failures if tests/Makefile does not exist.
> However, it is not very good because it will cause /tests/Makefile to
> be opened (see the commit message of e454e2e).
>
> Perhaps an even better way to avoid the problem would be this: just move
> the removal of makefile fragments to the _end_ of "make distclean":
>
> diff --git a/Makefile b/Makefile
> index 81c660f..b994109 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -203,9 +203,7 @@ qemu-ga$(EXESUF): QEMU_CFLAGS += -I qga/qapi-generated
>
>   gen-out-type = $(subst .,-,$(suffix $@))
>
> -ifneq ($(wildcard config-host.mak),)
>   include $(SRC_PATH)/tests/Makefile
> -endif
>
>   qapi-py = $(SRC_PATH)/scripts/qapi.py $(SRC_PATH)/scripts/ordereddict.py
>
> @@ -265,8 +263,7 @@ qemu-%.tar.bz2:
>   	$(SRC_PATH)/scripts/make-release "$(SRC_PATH)" "$(patsubst qemu-%.tar.bz2,%,$@)"
>
>   distclean: clean
> -	rm -f config-host.mak config-host.h* config-host.ld $(DOCS) qemu-options.texi qemu-img-cmds.texi qemu-monitor.texi
> -	rm -f config-all-devices.mak
> +	rm -f config-host.h* config-host.ld $(DOCS) qemu-options.texi qemu-img-cmds.texi qemu-monitor.texi
>   	rm -f roms/seabios/config.mak roms/vgabios/config.mak
>   	rm -f qemu-doc.info qemu-doc.aux qemu-doc.cp qemu-doc.cps qemu-doc.dvi
>   	rm -f qemu-doc.fn qemu-doc.fns qemu-doc.info qemu-doc.ky qemu-doc.kys
> @@ -279,6 +276,7 @@ distclean: clean
>   	rm -rf $$d || exit 1 ; \
>           done
>   	test -f pixman/config.log && make -C pixman distclean
> +	rm -f config-host.mak rm -f config-all-devices.mak
>
>   KEYMAPS=da     en-gb  et  fr     fr-ch  is  lt  modifiers  no  pt-br  sv \
>   ar      de     en-us  fi  fr-be  hr     it  lv  nl         pl  ru     th \
>
>
> With this change, no need for MAKEFILES anymore.
>
> Paolo
>

   I guess "make distclean" for second time would fail in this case,
because $(SRC_PATH) is not set. I found a better way to do it without
MAKEFILES:

-ifneq ($(wildcard config-host.mak),)
-   include $(SRC_PATH)/tests/Makefile
+   include tests/Makefile
-endif

   due to tests/Makefile is added in configure in this patch so it is
always soft linked then include always succeed.
-- 
Best Regards

Wenchao Xia