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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=6wkvNORTwM39S5uL0TTc53qeLnDmqjDSKMDvKwEqUnA=; b=m44jMw7CdJ3c4kvmdes/k+cAwc0fNuc/GQobqYDlvYZP6LlrJ98UmUIHwDiCNL11ui Ie4rbRLZsh3Mn1Qrpf4oU3hNEEgTKebw9YXlgCtjG9bx8r1wGdW7W3Vz0RSIO407WqDy MYGeUTbnZC7i6nZKFz9IHL85a/HIf8iTQv5vUj1N/gLVbssaj4HD5l6+BrBJePMBNxDj qnvPO0Q56sCNYB8WyXuPBMrnBdydpFRgL8KmGxA+7Sm7sQrYJ5NNhBMCb3lTMsq9RzBa b4gQtZtLcUgIrAZv9diIKwpo4ndxEJmRSs+73DOM79BG3bsycZuqqjxO8Fvj5yWzfpS7 Hpmw== X-Gm-Message-State: AOAM530M3oXWWO3PZquXWotfHOifdvBAGJ0Jv6f/YaFPwKJpotSvTLzq g3IcwKjC6bCgeAkc5TvowWLUw6FRiQstL8q9UbE= X-Google-Smtp-Source: ABdhPJyhl0O3HrtpwK2+/eq92loT21+CwrJm1w5RAc9ZKC6o0au3sfzPs9arIL72JQf6OFaC7oO4rGV/iT2i5XrFZMM= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:ad4:57cc:: with SMTP id y12mr19090228qvx.48.1600460129171; Fri, 18 Sep 2020 13:15:29 -0700 (PDT) Date: Fri, 18 Sep 2020 13:14:27 -0700 In-Reply-To: <20200918201436.2932360-1-samitolvanen@google.com> Message-Id: <20200918201436.2932360-22-samitolvanen@google.com> Mime-Version: 1.0 References: <20200918201436.2932360-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.681.g6f77f65b4e-goog Subject: [PATCH v3 21/30] 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-20200918_161534_653301_91F0CE62 X-CRM114-Status: GOOD ( 11.90 ) 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 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 -- 2.28.0.681.g6f77f65b4e-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel