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From: Jan Beulich <jbeulich@suse.com>
To: "xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: "Andrew Cooper" <andrew.cooper3@citrix.com>,
	"Wei Liu" <wl@xen.org>, "Roger Pau Monné" <roger.pau@citrix.com>
Subject: [PATCH] x86: fix build race when generating temporary object files (take 2)
Date: Mon, 26 Apr 2021 11:54:13 +0200	[thread overview]
Message-ID: <c35ad629-0dea-688a-199d-895186aeffb2@suse.com> (raw)

The original commit wasn't quite sufficient: Emptying DEPS is helpful
only when nothing will get added to it subsequently. xen/Rules.mk will,
after including the local Makefile, amend DEPS by dependencies for
objects living in sub-directories though. For the purpose of suppressing
dependencies of the makefiles on the .*.d2 files (and thus to avoid
their re-generation) it is, however, not necessary at all to play with
DEPS. Instead we can override DEPS_INCLUDE (which generally is a late-
expansion variable).

Fixes: 761bb575ce97 ("x86: fix build race when generating temporary object files")
Signed-off-by: Jan Beulich <jbeulich@suse.com>

--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -314,5 +314,5 @@ clean::
 # Suppress loading of DEPS files for internal, temporary target files.  This
 # then also suppresses re-generation of the respective .*.d2 files.
 ifeq ($(filter-out .xen%.o,$(notdir $(MAKECMDGOALS))),)
-DEPS:=
+DEPS_INCLUDE:=
 endif


             reply	other threads:[~2021-04-26  9:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-26  9:54 Jan Beulich [this message]
2021-05-07  8:28 ` Ping: [PATCH] x86: fix build race when generating temporary object files (take 2) Jan Beulich
2021-05-25 11:13 ` Ping²: " Jan Beulich

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