From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from msmail.insydesw.com.tw (ms.insydesw.com [211.75.113.220]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 75F0921CE749B for ; Thu, 20 Jul 2017 09:28:06 -0700 (PDT) Received: from msmail.insydesw.com.tw ([fe80::74f7:f173:f4aa:9a05]) by msmail.insydesw.com.tw ([fe80::74f7:f173:f4aa:9a05%11]) with mapi id 14.01.0438.000; Fri, 21 Jul 2017 00:29:57 +0800 From: Tim Lewis To: "edk2-devel@lists.01.org" Thread-Topic: Using NULL| style library linkable in EDK2 Thread-Index: AdMBdQW/ajMT99Y2Rv2C1SL0YNQE3Q== Date: Thu, 20 Jul 2017 16:29:56 +0000 Message-ID: <7236196A5DF6C040855A6D96F556A53F61597E@msmail.insydesw.com.tw> Accept-Language: en-US, zh-TW X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.100.108] MIME-Version: 1.0 X-Content-Filtered-By: Mailman/MimeDel 2.1.22 Subject: Using NULL| style library linkable in EDK2 X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Jul 2017 16:28:07 -0000 Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Per the DSC specification (section 2.7), it is not legal to use a NULL| in = the LIbraryClasses section. The reserved library class keyword, NULL is not permitted in any of the [Li= braryClasses] sections. The NULL Library class keyword is only permitted within the [Comp= onents] section's INF file subsection. However, it appears that this exact construct is not only used, but require= d for Compiler Intrinsic libraries (such as used in the ARM build in ArmPkg= .dsc). So I suggest that this line in the specification be modified to state "Exce= pt for compiler intrinsic libraries, the..." Thanks, Tim Lewis CTO, Insyde Software www.insyde.com