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Re: [PATCH] coverage: filter out lib{fdt,elf}-temp.o
- To: Anthony PERARD <anthony.perard@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 22 Jan 2024 11:04:41 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Javi Merino <javi.merino@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Michal Orzel <michal.orzel@xxxxxxx>
- Delivery-date: Mon, 22 Jan 2024 10:04:53 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.01.2024 16:25, Anthony PERARD wrote:
> On Fri, Jan 19, 2024 at 09:43:30AM +0100, Michal Orzel wrote:
>> Is my understanding correct that by switching from extra-y to targets we are
>> preventing these objects to
>> appear in non-init-objects (and thus having COV_FLAGS appended) while
>> retaining the proper if_changed behavior?
>>
>> According to docs/misc/xen-makefiles/makefiles.rst:
>> Any target that utilises if_changed must be listed in $(targets),
>> otherwise the command line check will fail, and the target will
>> always be built.
>
> Indeed, and $(extra-y) is added to $(targets) via
> $(targets-for-builtin).
>
> While switching from $(extra-y) to $(targets) prevents the objects from
> been added to $(non-init-objets), it doesn't matter because "libelf.o"
> is in that variable, so $(COV_FLAGS) is added to $(_c_flags) and its
> value is used in all the prerequisites of "libelf.o" which includes
> "libelf-temp.o" and for example "libelf-dominfo.o". So the only thing
> preventing $(COV_FLAGS) from been added when building "libelf-tools.o"
> for example is that we set `COV_FLAGS:=` for "libelf.o".
Yet doesn't that (again) mean things should actually work as-is, yet
Michal is observing this not being the case?
Jan
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