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client-ip=162.221.158.21; receiver=esa4.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: DID107mk41IC12RgYoANWwePVEMeVkQ9VF+iVg7R4ytt3uJQmbGZxvjITJ04yBX6yV0ROtKH25 4CX9JczeUqrinOLL9bxuoW+PrpGNihD+RFmJgT06b8naZVS6sSdzXz0+A88IAobzyWVVsCdoz4 Aotd3XCpvOYyTfxnZ1l1OLWeEzusHxhCeJ3BOy1b2oQtRpSXrVBxYjK0NDRcbWQ3Q7+ITKuZ2m 7RaL+Qn84as6mr6C/E/1H6PhTUBJxeITk1XhC3wnQMDvTsDzTJhDjhY/4umanTuYm8Mx6o23dJ 2Mk= X-SBRS: 2.7 X-MesageID: 13658316 X-Ironport-Server: esa4.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.70,487,1574139600"; d="scan'208";a="13658316" From: Anthony PERARD To: Date: Wed, 26 Feb 2020 11:33:51 +0000 Message-ID: <20200226113355.2532224-20-anthony.perard@citrix.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200226113355.2532224-1-anthony.perard@citrix.com> References: <20200226113355.2532224-1-anthony.perard@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [XEN PATCH v3 19/23] xen/build: Use if_changed_rules with %.o:%.c targets X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Stefano Stabellini , Julien Grall , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Ian Jackson , Jan Beulich , Anthony PERARD Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Use $(dot-target) to have the target name prefix with a dot. Now, when the CC command has run, it is recorded in .*.cmd file, then if_changed_rules will compare it on subsequent runs. Signed-off-by: Anthony PERARD Reviewed-by: Jan Beulich --- xen/Rules.mk | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/xen/Rules.mk b/xen/Rules.mk index cbf4feba0e0f..8c7dba9211d1 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -167,19 +167,27 @@ FORCE: SRCPATH := $(patsubst $(BASEDIR)/%,%,$(CURDIR)) -%.o: %.c Makefile +quiet_cmd_cc_o_c = CC $@ ifeq ($(CONFIG_ENFORCE_UNIQUE_SYMBOLS),y) - $(CC) $(c_flags) -c $< -o $(@D)/.$(@F).tmp -MQ $@ -ifeq ($(CONFIG_CC_IS_CLANG),y) - $(OBJCOPY) --redefine-sym $<=$(SRCPATH)/$< $(@D)/.$(@F).tmp $@ -else - $(OBJCOPY) --redefine-sym $(