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Re: [PATCH v3 1/4] build: add make macro for making file from file.in
- To: Juergen Gross <jgross@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 11 Dec 2025 15:26:40 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 11 Dec 2025 14:26:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 21.11.2025 14:23, Juergen Gross wrote:
> --- a/Config.mk
> +++ b/Config.mk
> @@ -159,6 +159,19 @@ define move-if-changed
> if ! cmp -s $(1) $(2); then mv -f $(1) $(2); else rm -f $(1); fi
> endef
>
> +PATH_FILES := Paths
> +INC_FILES = $(foreach f, $(PATH_FILES), $(XEN_ROOT)/config/$(f).mk)
> +
> +include $(INC_FILES)
And now a failing build tells me why by a gut feeling I didn't like this.
Being placed here, it affects the hypervisor build as well. The hypervisor
build, in its _install rule, uses $(DEBUG_DIR), first in
[ -d "$(D)$(DEBUG_DIR)" ] || $(INSTALL_DIR) $(D)$(DEBUG_DIR)
$(D) is an absolute directory (shorthand for $(DESTDIR)). $(DEBUG_DIR) as
set by Paths.mk is, too. Both point into the build tree. The two simply
shouldn't be glued together.
Note that the earlier
[ -d $(D)$(BOOT_DIR) ] || $(INSTALL_DIR) $(D)$(BOOT_DIR)
continues to be working fine, as BOOT_DIR continues to be controlled by
config/StdGNU.mk. Its DEBUG_DIR isn't taking effect anymore, when for the
hypervisor build it should.
And of course behavior now differs between building xen/ in a tree where
tools/ was built before vs in an otherwise clean tree.
Jan
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