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[PATCH] include: don't mention stub headers more than once in a make rule
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 22 Mar 2023 11:59:40 +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>, Anthony Perard <anthony.perard@xxxxxxxxxx>
- Delivery-date: Wed, 22 Mar 2023 10:59:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
When !GRANT_TABLE and !PV_SHIM headers-n contains grant_table.h twice,
causing make to complain "target '...' given more than once in the same
rule" for the rule generating the stub headers. We don't need duplicate
entries in headers-n anywhere, so zap them (by using $(sort ...)) right
where the final value of the variable is constructed.
Fixes: 6bec713f871f ("include/compat: produce stubs for headers not otherwise
generated")
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/include/Makefile
+++ b/xen/include/Makefile
@@ -34,7 +34,7 @@ headers-$(CONFIG_TRACEBUFFER) += compat/
headers-$(CONFIG_XENOPROF) += compat/xenoprof.h
headers-$(CONFIG_XSM_FLASK) += compat/xsm/flask_op.h
-headers-n := $(filter-out $(headers-y),$(headers-n) $(headers-))
+headers-n := $(sort $(filter-out $(headers-y),$(headers-n) $(headers-)))
cppflags-y := -include public/xen-compat.h
-DXEN_GENERATING_COMPAT_HEADERS
cppflags-$(CONFIG_X86) += -m32
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