From patchwork Thu Jul 1 14:09:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anthony PERARD X-Patchwork-Id: 12354153 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2A93C11F67 for ; Thu, 1 Jul 2021 14:10:48 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A8797613FB for ; Thu, 1 Jul 2021 14:10:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8797613FB Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.148712.274884 (Exim 4.92) (envelope-from ) id 1lyxOt-0007wz-JN; Thu, 01 Jul 2021 14:10:43 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 148712.274884; Thu, 01 Jul 2021 14:10:43 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lyxOt-0007wh-Ea; Thu, 01 Jul 2021 14:10:43 +0000 Received: by outflank-mailman (input) for mailman id 148712; Thu, 01 Jul 2021 14:10:42 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lyxOs-0005F9-JC for xen-devel@lists.xenproject.org; Thu, 01 Jul 2021 14:10:42 +0000 Received: from esa3.hc3370-68.iphmx.com (unknown [216.71.145.155]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 1306551d-da76-11eb-8327-12813bfff9fa; Thu, 01 Jul 2021 14:10:23 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 1306551d-da76-11eb-8327-12813bfff9fa DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1625148623; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=W3w4kLLs4D474Vdd8fHK3XAA2OqyxxyERzR7s4cMOP0=; b=aeHrKohN/N6ShuMLamw3YwrNUV+XmzYHaPzfkdTwszQe4z+SVD0Ebspl hCZkKgq6ERoqlvnAdCERLPjbcTe5QVy4W7OsDNL/EJafRcRXpKqf2URTi xJ+22QUI53O40dm+qu7ZglvRXTwVGFSd2NxYBNfLiU+ghYqWh7+AW5Fzp I=; Authentication-Results: esa3.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: GJ4PkxF6CblU0SjvcOwQOGT/BmredQqQ0MdquCllOKVewtxBRYzL6QA28aZcNVrL+XEhv6o3ml XdeCsmaWHLpttZeaEIuUaE0YO+gADtL1B/TT93ZIh2UUJErWB08+WCmKpMba7IqB8OvzGtMuCV eE/88p2AKPyUGSPfYlMeyMYlMOqZ+fOG2n9FWHh8vL2W+ps8SAod92gG6fCwot0niJnFFkOW12 83oaxkGGLABKF2auaGR9f5ziN7N+wW2Rf9OROX4sU8lFjs4D5PttLTay6aUhh6gyQpvI4lXfjH maQ= X-SBRS: 5.1 X-MesageID: 47384355 X-Ironport-Server: esa3.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED IronPort-HdrOrdr: A9a23:Ms3X/qNZ9Q7d5sBcTsejsMiBIKoaSvp037Eqv3ofdfUzSL3+qy nOpoVj6faaslcssR0b9OxofZPwI080lqQFhbX5X43DYOCOggLBR+tfBMnZsljd8kXFh4hgPM xbHZSWZuedMbEDt7eY3DWF X-IronPort-AV: E=Sophos;i="5.83,314,1616472000"; d="scan'208";a="47384355" From: Anthony PERARD To: CC: Anthony PERARD , Jan Beulich , Andrew Cooper , George Dunlap , Ian Jackson , Julien Grall , Stefano Stabellini , Wei Liu Subject: [XEN PATCH v6 04/31] build: use if_changed_rules with %.o:%.c targets Date: Thu, 1 Jul 2021 15:09:44 +0100 Message-ID: <20210701141011.785641-5-anthony.perard@citrix.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210701141011.785641-1-anthony.perard@citrix.com> References: <20210701141011.785641-1-anthony.perard@citrix.com> MIME-Version: 1.0 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 6a0cdfde2eed..4adc90eec80d 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -192,19 +192,27 @@ 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 $(