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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=1wwsKOGiECV1D1KgEHVbv0B/BweA4F/I9dw72JmCR3Y=; b=IXKP+TwdZSz1pPgqxGovcdaVyPOt/IkbKK7fi35N03f/W49trYWw47JipyroyLJv8z MVIgN43YgS4jPLb++ofCpWjzhiOyfaQ75KVJPIGFsib0aU5PMZkzVoO05nCTxBEFq42s Ow4nnRb8s8U2qz9y1fev16n0s/mIy6DGiMeg3AdCUrsCqyjHpYh8LCZTJOsMaMsGEyXP u79zQiwVdOcuw+gglKyW2HXbl4j+wbrm6mPvN8IXConywyNiP+yf+6xEfjRQFlj62fXk cegrB4m/E/XQzNh6CLasBuWFFYtQEUBG8tWIL32EvO1DvyjjOvgyldhnru47v4blQf8Z hyXg== X-Gm-Message-State: AOAM532+LoFxYE4nOkNFbCKSpAPTOULP0FEHdDj7DuloprahKz3LIX6k fordj5+AI02YKlb2A/8NQRkUEdHXcCe4MTNLW/s= X-Google-Smtp-Source: ABdhPJwEKrxzd5NrBrajDh1vcsnhdiTwGRM7+BFQV4hZChNnFjkX2yaVuQmX8BQu56ntgdFiR9mN2xnv8SJVdSGGSeE= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a17:90b:384c:: with SMTP id nl12mr4502047pjb.205.1599165094662; Thu, 03 Sep 2020 13:31:34 -0700 (PDT) Date: Thu, 3 Sep 2020 13:30:44 -0700 In-Reply-To: <20200903203053.3411268-1-samitolvanen@google.com> Message-Id: <20200903203053.3411268-20-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> <20200903203053.3411268-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.526.ge36021eeef-goog Subject: [PATCH v2 19/28] scripts/mod: disable LTO for empty.c From: Sami Tolvanen To: Masahiro Yamada , Will Deacon X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200903_163140_581364_F958E9FC X-CRM114-Status: GOOD ( 12.29 ) X-Spam-Score: -8.2 (--------) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-8.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [209.85.215.201 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [209.85.215.201 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM white-list 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.5 DKIMWL_WL_MED DKIMwl.org - Medium sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arch@vger.kernel.org, x86@kernel.org, Kees Cook , "Paul E. McKenney" , kernel-hardening@lists.openwall.com, Peter Zijlstra , Greg Kroah-Hartman , linux-kbuild@vger.kernel.org, Nick Desaulniers , linux-kernel@vger.kernel.org, Steven Rostedt , clang-built-linux@googlegroups.com, Sami Tolvanen , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org With CONFIG_LTO_CLANG, clang generates LLVM IR instead of ELF object files. As empty.o is used for probing target properties, disable LTO for it to produce an object file instead. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- scripts/mod/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/scripts/mod/Makefile b/scripts/mod/Makefile index 78071681d924..c9e38ad937fd 100644 --- a/scripts/mod/Makefile +++ b/scripts/mod/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 OBJECT_FILES_NON_STANDARD := y +CFLAGS_REMOVE_empty.o += $(CC_FLAGS_LTO) hostprogs-always-y += modpost mk_elfconfig always-y += empty.o