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client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: FNgE11mTYU3wsjPR7QjbGUq7CMfBh/nCRoj0+HaxpFVo+1Opo9Q5qyCTJic45FydjzPbBNEQad J5YRSwElfxKn3Sqm/6yhWDN1sS3WqC6QVX5pkI26WcZ90zBaYCsgxK3X6AFQOapbCu3OA0NaLY D7MSyax+UZ5a9LhqwZ6q/5+qOMBHBPhHPxaFpzju6JprHsF5391LXlhgLFSdxDxHc0wj20NtIq 8pTtfzdsJdsMhdLhOwcAKnFaqleWxl6iai9uOHXvDh5xrWv4ek9IuA7UJSV9PU9Vx4iRY9Blpv z48= X-SBRS: 2.7 X-MesageID: 14931630 X-Ironport-Server: esa2.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.72,327,1580792400"; d="scan'208";a="14931630" From: Anthony PERARD To: Subject: [XEN PATCH v4 11/18] xen/build: Use if_changed_rules with %.o:%.c targets Date: Tue, 31 Mar 2020 11:30:55 +0100 Message-ID: <20200331103102.1105674-12-anthony.perard@citrix.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200331103102.1105674-1-anthony.perard@citrix.com> References: <20200331103102.1105674-1-anthony.perard@citrix.com> MIME-Version: 1.0 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 , Andrew Cooper , Ian Jackson , George Dunlap , 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 c744175fd6f0..e126e4972dec 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -173,19 +173,27 @@ 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 $(