From nobody Wed Sep 08 09:29:25 2021 X-Original-To: riscv@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 0DC4D17C7918 for ; Wed, 8 Sep 2021 09:29:26 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4H4H056g4gz3RFZ for ; Wed, 8 Sep 2021 09:29:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id BD4932317D for ; Wed, 8 Sep 2021 09:29:25 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 1889TPWj022571 for ; Wed, 8 Sep 2021 09:29:25 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 1889TPwm022570 for riscv@FreeBSD.org; Wed, 8 Sep 2021 09:29:25 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: riscv@FreeBSD.org Subject: [Bug 258358] Fails to build on riscv: arm_bf16.h: sh: clang-tblgen: Exec format error Date: Wed, 08 Sep 2021 09:29:25 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: riscv X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: needs-qa, regression X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: jrtc27@freebsd.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: toolchain@FreeBSD.org X-Bugzilla-Flags: maintainer-feedback? maintainer-feedback? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: FreeBSD on the RISC-V instruction set architecture List-Archive: https://lists.freebsd.org/archives/freebsd-riscv List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-riscv@freebsd.org X-BeenThere: freebsd-riscv@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258358 --- Comment #4 from Jessica Clarke --- This is a known issue. We build the bootstrap tool as a static binary and w= ith --gc-sections. The latter is key, as ELF notes are not considered as GC roo= ts when COMDAT, as was made the case last year for the ABI note. Because RISC-V isn=E2=80=99t using EI_OSABI on FreeBSD there=E2=80=99s then no branding in= the binary for the kernel to recognise (you need at least one of that, the dynamic linker path= or the ELF note). The fix for this is to stop making the note COMDAT and put it only in crti. There is a workaround. Find the -Wl,--gc-sections (IIRC it=E2=80=99s in usr.bin/clang/llvm.build.mk) and add ,-melf64lriscv_fbsd to the end of it. --=20 You are receiving this mail because: You are on the CC list for the bug.=