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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=KGusc3+RBCNZzwrkW+3708RrOouUa5FTnw8PnBTY3Ig=; b=Jjb8aQyogHhKvOJK34MwV/ric0kmHp5SsT0ZPYc46eU0hnTTPSDtPvVsm/KhXIrkuC wCS0DV2jClfovrQEKD47Igzf+EHvIHvHJ+XNNmNpcUrZS8NO1/vXuXW2+FcvAKrX1MQk m3/ACVWcpDs2IlxKin+VjK8ELgZmVa7pcMTzViOYM3P+TTB1UlxSujdPG7rQJ+H1i+hz nGSYx9JmTDvrfug9Tu0FBpZKNl9IE+GCc6lCv78dBxlehPALCdlxyhIrArcLkxkw0KUv w8PD0rO9BUWAQGaNfq1k94DxZQ8N7TQIGmeMKvG6WfJGaBshx8YoeQevbSPecBoGDZtE WVKA== X-Gm-Message-State: AOAM533Mw0Qdv2fkNLkYwWqoVi70t2AHIwsZ1+kyvkD3eC+nf6GFUX/E q40BnvIphsmurs58DtCmvbpZ1/guhjC4zxCZCwo= X-Google-Smtp-Source: ABdhPJxn7XFZrqOn+1+G64/SnDmtkk1LEUGGMAzLxs1dl5s59vyoJo/OwiDLBmXb5P310AefkBc1vWcPP0Py9wbvJGA= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a25:2689:: with SMTP id m131mr35046414ybm.506.1602549167733; Mon, 12 Oct 2020 17:32:47 -0700 (PDT) Date: Mon, 12 Oct 2020 17:31:57 -0700 In-Reply-To: <20201013003203.4168817-1-samitolvanen@google.com> Message-Id: <20201013003203.4168817-20-samitolvanen@google.com> Mime-Version: 1.0 References: <20201013003203.4168817-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.1011.ga647a8990f-goog Subject: [PATCH v6 19/25] scripts/mod: disable LTO for empty.c From: Sami Tolvanen To: Masahiro Yamada , Steven Rostedt X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201012_203251_463411_53269F0F X-CRM114-Status: GOOD ( 12.65 ) 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, clang-built-linux@googlegroups.com, Sami Tolvanen , linux-pci@vger.kernel.org, Will Deacon , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.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 -- 2.28.0.1011.ga647a8990f-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel