From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756502AbcEEIIZ (ORCPT ); Thu, 5 May 2016 04:08:25 -0400 Received: from mga03.intel.com ([134.134.136.65]:45352 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755562AbcEEIIT (ORCPT ); Thu, 5 May 2016 04:08:19 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,581,1455004800"; d="p7s'?scan'208";a="97619382" From: "Woodhouse, David" To: "linux-kbuild@vger.kernel.org" , "yamada.masahiro@socionext.com" CC: "mmarek@suse.com" , "linux-kernel@vger.kernel.org" , "dhowells@redhat.com" Subject: Re: [PATCH] kbuild: fix if_change and friends to consider argument order Thread-Topic: [PATCH] kbuild: fix if_change and friends to consider argument order Thread-Index: AQHRpqH56HjjMzFyWkioZrHDPUlzip+p7IMA Date: Thu, 5 May 2016 08:08:15 +0000 Message-ID: <1462435694.44077.9.camel@intel.com> References: <1462434312-19422-1-git-send-email-yamada.masahiro@socionext.com> In-Reply-To: <1462434312-19422-1-git-send-email-yamada.masahiro@socionext.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: yes X-MS-TNEF-Correlator: x-originating-ip: [10.252.7.213] Content-Type: multipart/signed; micalg=sha-1; protocol="application/x-pkcs7-signature"; boundary="=-VgNtS+nF3KsDYTaa4hgO" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --=-VgNtS+nF3KsDYTaa4hgO Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Thu, 2016-05-05 at 16:45 +0900, Masahiro Yamada wrote: >=20 > This commit fixes arg-check to compare two strings as a whole. > $(strip ...) is important because we want to ignore the difference > that comes from white-spaces. Do we? I can construct a hypothetical situation in which whitespace differs and we *do* want it to make a difference (for example I used to sign with a key called 'My Signing Key.pem' and now I've changed to use 'My =C2=A0Signing =C2=A0Key.pem'. (OK, it's a *stupid* example but still...= ) I couldn't come up with the converse =E2=80=94 where whitespace does change= for some reason, but we really don't want to rebuild. Should we err on the side of caution, and let whitespace changes trigger a rebuild? --=20 David Woodhouse Open Source Technology Centre David.Woodhouse@intel.com Intel Corporation --=-VgNtS+nF3KsDYTaa4hgO Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIILITCCBOsw ggPToAMCAQICEFLpAsoR6ESdlGU4L6MaMLswDQYJKoZIhvcNAQEFBQAwbzELMAkGA1UEBhMCU0Ux FDASBgNVBAoTC0FkZFRydXN0IEFCMSYwJAYDVQQLEx1BZGRUcnVzdCBFeHRlcm5hbCBUVFAgTmV0 d29yazEiMCAGA1UEAxMZQWRkVHJ1c3QgRXh0ZXJuYWwgQ0EgUm9vdDAeFw0xMzAzMTkwMDAwMDBa Fw0yMDA1MzAxMDQ4MzhaMHkxCzAJBgNVBAYTAlVTMQswCQYDVQQIEwJDQTEUMBIGA1UEBxMLU2Fu dGEgQ2xhcmExGjAYBgNVBAoTEUludGVsIENvcnBvcmF0aW9uMSswKQYDVQQDEyJJbnRlbCBFeHRl cm5hbCBCYXNpYyBJc3N1aW5nIENBIDRBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA 4LDMgJ3YSVX6A9sE+jjH3b+F3Xa86z3LLKu/6WvjIdvUbxnoz2qnvl9UKQI3sE1zURQxrfgvtP0b 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