From patchwork Fri Mar 12 10:34:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 1451899 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=85.214.62.61; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=nic.cz header.i=@nic.cz header.a=rsa-sha256 header.s=default header.b=VvtT5Rax; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Dxj6c348Lz9sVw for ; Fri, 12 Mar 2021 21:41:44 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 13BC282CFC; Fri, 12 Mar 2021 11:38:19 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=nic.cz Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; secure) header.d=nic.cz header.i=@nic.cz header.b="VvtT5Rax"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 05D1482B6F; Fri, 12 Mar 2021 11:36:00 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from mail.nic.cz (mail.nic.cz [IPv6:2001:1488:800:400::400]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id D67E682B82 for ; Fri, 12 Mar 2021 11:35:02 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=nic.cz Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=marek.behun@nic.cz Received: from dellmb.labs.office.nic.cz (unknown [IPv6:2001:1488:fffe:6:cac7:3539:7f1f:463]) by mail.nic.cz (Postfix) with ESMTPSA id 75721140B2E; Fri, 12 Mar 2021 11:35:02 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=nic.cz; s=default; t=1615545302; bh=i88IwDo/3FSB8NJv7eOGVmRC7AE1sKDrcraUhi0Gk28=; h=From:To:Date; b=VvtT5Raxs+NT5ZV943lAHlVI0fnnXd0d9lWWelC06UDLr0XF/w3/NdyTugx4UXCEt SmM0kjB4F+5WYQCZdtjt+lgv/nKDkXb+MaEiDvFjpmqs/+iAN4L2pMkm4N8hHnjLzi bLRy1U7D7r27RVT1zag+2kAeTzAx4HFi2PfZLUNs= From: =?utf-8?q?Marek_Beh=C3=BAn?= To: u-boot@lists.denx.de, Simon Glass , Heiko Schocher , Patrick Delaunay , Patrice CHOTARD , Miquel Raynal , Tom Rini , =?utf-8?q?Pali_Roh=C3=A1r?= , Stefan Roese , Heinrich Schuchardt , Alexander Graf , Marek Vasut , Neil Armstrong , Ryder Lee , Adam Ford , Bin Meng Cc: =?utf-8?q?Marek_Beh=C3=BAn?= Subject: [PATCH u-boot v2 37/38] ARM: don't use --gc-sections with LTO when using private libgcc Date: Fri, 12 Mar 2021 11:34:28 +0100 Message-Id: <20210312103429.25895-38-marek.behun@nic.cz> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210312103429.25895-1-marek.behun@nic.cz> References: <20210312103429.25895-1-marek.behun@nic.cz> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de X-Virus-Status: Clean When using LTO, we can throw away the --gc-sections flag, but only if using private libgcc. When using system's libgcc, --gc-sections is still needed, otherwise linking will fail due to undefined references to libc's symbols. Signed-off-by: Marek Behún --- arch/arm/config.mk | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/config.mk b/arch/arm/config.mk index 2b2c6ad2e5..68745d489f 100644 --- a/arch/arm/config.mk +++ b/arch/arm/config.mk @@ -14,7 +14,9 @@ endif CFLAGS_NON_EFI := -fno-pic -ffixed-r9 -ffunction-sections -fdata-sections CFLAGS_EFI := -fpic -fshort-wchar +ifneq ($(CONFIG_LTO)$(CONFIG_USE_PRIVATE_LIBGCC),yy) LDFLAGS_FINAL += --gc-sections +endif ifndef CONFIG_LTO PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections