From patchwork Fri Apr 25 11:23:50 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ross Burton X-Patchwork-Id: 61882 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 872CBC369D7 for ; Fri, 25 Apr 2025 11:23:58 +0000 (UTC) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mx.groups.io with SMTP id smtpd.web11.4369.1745580236413256016 for ; Fri, 25 Apr 2025 04:23:56 -0700 Authentication-Results: mx.groups.io; dkim=none (message not signed); spf=pass (domain: arm.com, ip: 217.140.110.172, mailfrom: ross.burton@arm.com) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id BA977106F for ; Fri, 25 Apr 2025 04:23:50 -0700 (PDT) Received: from cesw-amp-gbt-1s-m12830-04.lab.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id B32FB3F59E for ; Fri, 25 Apr 2025 04:23:55 -0700 (PDT) From: Ross Burton To: openembedded-core@lists.openembedded.org Subject: [PATCH 3/3] libunwind: fix build when unused sections are garbage collected Date: Fri, 25 Apr 2025 12:23:50 +0100 Message-ID: <20250425112350.3626731-3-ross.burton@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250425112350.3626731-1-ross.burton@arm.com> References: <20250425112350.3626731-1-ross.burton@arm.com> MIME-Version: 1.0 List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Fri, 25 Apr 2025 11:23:58 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/215456 poky-tiny uses gcsections.inc to strip unused sections from the binaries. However, on qemuarm5/qemuarm64 with poky-tiny this appears to result in too much being removed and the link fails: ld: .libs/Gtest-trace: hidden symbol `__aarch64_cas8_acq_rel' in libgcc.a(cas_8_4.o) is referenced by DSO Work around this by disabling gcsections.inc. Signed-off-by: Ross Burton --- meta/recipes-support/libunwind/libunwind_1.8.1.bb | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/meta/recipes-support/libunwind/libunwind_1.8.1.bb b/meta/recipes-support/libunwind/libunwind_1.8.1.bb index 38022569df2..b22cb30646e 100644 --- a/meta/recipes-support/libunwind/libunwind_1.8.1.bb +++ b/meta/recipes-support/libunwind/libunwind_1.8.1.bb @@ -32,6 +32,10 @@ EXTRA_OECONF = "--enable-static" ARM_INSTRUCTION_SET:armv4 = "arm" ARM_INSTRUCTION_SET:armv5 = "arm" +# With qemuarm64 and poky-tiny: +# ld: .libs/Gtest-trace: hidden symbol `__aarch64_cas8_acq_rel' in libgcc.a(cas_8_4.o) is referenced by DSO +LDFLAGS_SECTION_REMOVAL = "" + LDFLAGS += "-Wl,-z,relro,-z,now" SECURITY_LDFLAGS:append:libc-musl = " -lssp_nonshared"