From nobody Tue Dec 23 12:39:21 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=citrix.com ARC-Seal: i=1; a=rsa-sha256; t=1585651678; cv=none; d=zohomail.com; s=zohoarc; b=S8Lku4tvm/12nm8jHJ0aw9+kZFJUXI8F686iFPta5G1kTYjV0ct5MNcFEYCYBWn39dk/1ZpqbbBkxDARp6vcKr+5PFBcs3q2oj6UZHltpFMC0ldfnWKcuWGqMyrLc2vx5PFgcSyoge016FKX3OTpDj//k9Q/QD/6mSLqqWboQkc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1585651678; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=9TgtAm6ppL6Wzy8KM5jKIGWA7bYs/NQKIO13HeuveUs=; b=a38974EUbWW/TUA0Ubikg2sMfyhQVsQkus6K+OfrslO2j9V7840LEtCqWtdMZnbwF9Zu5HD+7ooINK83ucMtWv/zSXmaD6OmIkcIrFiAsh2pBRrKHUNPCB4wIT2TewBj9kaku0yg+MMY4LWrJ7AVOaifzRp2wQPwuUjBO5Exc3A= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1585651678346417.3751246638484; Tue, 31 Mar 2020 03:47:58 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1jJEQZ-0002vr-2G; Tue, 31 Mar 2020 10:47:27 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1jJEQX-0002uY-9C for xen-devel@lists.xenproject.org; Tue, 31 Mar 2020 10:47:25 +0000 Received: from esa5.hc3370-68.iphmx.com (unknown [216.71.155.168]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id fe66ed16-733c-11ea-83d8-bc764e2007e4; Tue, 31 Mar 2020 10:47:19 +0000 (UTC) X-Inumbo-ID: fe66ed16-733c-11ea-83d8-bc764e2007e4 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1585651639; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=OFAz1fugU3l3YdNV5mZP5c0I0tExp22dADHA+0CiQhM=; b=KApy001RsL3+yLM/84Mo6qzQq6tMonqNhNL84OWNOhf71vJn5NivbYHa kbJAwEo5Go3hbaoCHaTNCegSSfxB21i/V1zUFSIHs6YLb+/7qYsJpEOm0 25UlN6wfu7I1ddK9WHLoqgV0fRWlSl1tIiF43+8Xdy+hbPw2PCU3MxxGp 8=; Authentication-Results: esa5.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=anthony.perard@citrix.com; spf=Pass smtp.mailfrom=anthony.perard@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Received-SPF: None (esa5.hc3370-68.iphmx.com: no sender authenticity information available from domain of anthony.perard@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="anthony.perard@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa5.hc3370-68.iphmx.com: domain of anthony.perard@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="anthony.perard@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ip4:168.245.78.127 ~all" Received-SPF: None (esa5.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa5.hc3370-68.iphmx.com; envelope-from="anthony.perard@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: AyEooyTpBqlOIWVXy3xFHTEcW0CEkYpDuLUyZnvUsv7BHR4ALDW7+qBFx/qWQrD4WtMusLgvTr hG53AY9mh4XSiCK0ayJn9KIqQKOWjeX5bVb0AAiTTTdYPsjzJWqXzFqO35fJ5bY1+5kA5vApli YBwlcF03FKg74rvgckr08MhTaQUjwxkdo477xHcdaNRuUE0qJgpyOtyvS8/NrQQREPJQaUksZQ 5vD6ZNg4uMX2mkIyVgIZiJvzu3GC8+qwWMt1M2042SR1wpPnCp6G2//JkM0PXltg91tIjTrRP/ CvU= X-SBRS: 2.7 X-MesageID: 15246893 X-Ironport-Server: esa5.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="15246893" From: Anthony PERARD To: Subject: [XEN PATCH v4 10/18] xen/build: use if_changed on built_in.o Date: Tue, 31 Mar 2020 11:30:54 +0100 Message-ID: <20200331103102.1105674-11-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 Content-Transfer-Encoding: quoted-printable 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" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" In the case where $(obj-y) is empty, we also replace $(c_flags) by $(XEN_CFLAGS) to avoid generating an .%.d dependency file. This avoid make trying to include %.h file in the ld command if $(obj-y) isn't empty anymore on a second run. Signed-off-by: Anthony PERARD --- Notes: v4: - Have cmd_ld_builtin depends on CONFIG_LTO, which simplify built_in.o rule. xen/Rules.mk | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/xen/Rules.mk b/xen/Rules.mk index 5e668f5ba0d8..c744175fd6f0 100644 --- a/xen/Rules.mk +++ b/xen/Rules.mk @@ -130,15 +130,24 @@ include $(BASEDIR)/arch/$(TARGET_ARCH)/Rules.mk c_flags +=3D $(CFLAGS-y) a_flags +=3D $(CFLAGS-y) $(AFLAGS-y) =20 -built_in.o: $(obj-y) $(extra-y) -ifeq ($(obj-y),) - $(CC) $(c_flags) -c -x c /dev/null -o $@ -else +quiet_cmd_ld_builtin =3D LD $@ ifeq ($(CONFIG_LTO),y) - $(LD_LTO) -r -o $@ $(filter-out $(extra-y),$^) +cmd_ld_builtin =3D \ + $(LD_LTO) -r -o $@ $(filter-out $(extra-y),$(real-prereqs)) else - $(LD) $(XEN_LDFLAGS) -r -o $@ $(filter-out $(extra-y),$^) +cmd_ld_builtin =3D \ + $(LD) $(XEN_LDFLAGS) -r -o $@ $(filter-out $(extra-y),$(real-prereqs)) endif + +quiet_cmd_cc_builtin =3D LD $@ +cmd_cc_builtin =3D \ + $(CC) $(XEN_CFLAGS) -c -x c /dev/null -o $@ + +built_in.o: $(obj-y) $(extra-y) FORCE +ifeq ($(obj-y),) + $(call if_changed,cc_builtin) +else + $(call if_changed,ld_builtin) endif =20 targets +=3D built_in.o --=20 Anthony PERARD