From owner-freebsd-ppc@freebsd.org Tue Dec 5 18:49:38 2017 Return-Path: Delivered-To: freebsd-ppc@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A05ADE74833 for ; Tue, 5 Dec 2017 18:49:38 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: from asp.reflexion.net (outbound-mail-210-121.reflexion.net [208.70.210.121]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 5267B68978 for ; Tue, 5 Dec 2017 18:49:37 +0000 (UTC) (envelope-from markmi@dsl-only.net) Received: (qmail 23429 invoked from network); 5 Dec 2017 18:42:51 -0000 Received: from unknown (HELO mail-cs-01.app.dca.reflexion.local) (10.81.19.1) by 0 (rfx-qmail) with SMTP; 5 Dec 2017 18:42:51 -0000 Received: by mail-cs-01.app.dca.reflexion.local (Reflexion email security v8.40.3) with SMTP; Tue, 05 Dec 2017 13:42:51 -0500 (EST) Received: (qmail 26994 invoked from network); 5 Dec 2017 18:42:50 -0000 Received: from unknown (HELO iron2.pdx.net) (69.64.224.71) by 0 (rfx-qmail) with (AES256-SHA encrypted) SMTP; 5 Dec 2017 18:42:50 -0000 Received: from [192.168.1.25] (c-76-115-7-162.hsd1.or.comcast.net [76.115.7.162]) by iron2.pdx.net (Postfix) with ESMTPSA id 44F59EC814E; Tue, 5 Dec 2017 10:42:50 -0800 (PST) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: 32-bit powerpc system-clang based builds of devel/llvm40 and devel/llvm50: fails via "Host compiler appears to require libatomic, but cannot find it" Message-Id: Date: Tue, 5 Dec 2017 10:42:49 -0800 To: FreeBSD Toolchain , FreeBSD PowerPC ML , FreeBSD Ports X-Mailer: Apple Mail (2.3273) X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 05 Dec 2017 18:49:38 -0000 [I experiment with system-clang based buildworld and/or buildkernel based TARGET_ARCH=3Dpowerpc64 and TARGET_ARCH=3Dpowerpc environments.] For TARGET_ARCH=3Dpowerpc devel/llvm40 and devel/llvm50 get failure reports like: -- Looking for __atomic_load_8 in atomic - not found CMake Error at cmake/modules/CheckAtomic.cmake:74 (message): Host compiler appears to require libatomic, but cannot find it. Call Stack (most recent call first): cmake/config-ix.cmake:307 (include) CMakeLists.txt:582 (include) I had tried to avoid any need for 8-Byte atomics (among other things) by avoiding LIT, LLD, and LLDB: # more /usr/local/etc/poudriere.d/options/devel_llvm50/options # This file is auto-generated by 'make config'. # Options for llvm50-5.0.0_1 _OPTIONS_READ=3Dllvm50-5.0.0_1 _FILE_COMPLETE_OPTIONS_LIST=3DCLANG DOCS EXTRAS LIT LLD LLDB OPTIONS_FILE_SET+=3DCLANG OPTIONS_FILE_SET+=3DDOCS OPTIONS_FILE_SET+=3DEXTRAS OPTIONS_FILE_UNSET+=3DLIT OPTIONS_FILE_UNSET+=3DLLD OPTIONS_FILE_UNSET+=3DLLDB # more /usr/local/etc/poudriere.d/options/devel_llvm40/options # This file is auto-generated by 'make config'. # Options for llvm40-4.0.1_1 _OPTIONS_READ=3Dllvm40-4.0.1_1 _FILE_COMPLETE_OPTIONS_LIST=3DCLANG DOCS EXTRAS LIT LLD LLDB OPTIONS_FILE_SET+=3DCLANG OPTIONS_FILE_SET+=3DDOCS OPTIONS_FILE_SET+=3DEXTRAS OPTIONS_FILE_UNSET+=3DLIT OPTIONS_FILE_UNSET+=3DLLD OPTIONS_FILE_UNSET+=3DLLDB For clang-based buildworld avoiding such things prevents running into the 8-Byte atomics based build failures: WITH_LIBCPLUSPLUS=3D WITH_BINUTILS_BOOTSTRAP=3D WITH_ELFTOOLCHAIN_BOOTSTRAP=3D #WITH_CLANG_BOOTSTRAP=3D WITH_CLANG=3D WITH_CLANG_IS_CC=3D WITH_CLANG_FULL=3D WITH_CLANG_EXTRAS=3D WITH_LLD=3D # lldb requires missing atomic 8-byte operations for powerpc (non-64) WITHOUT_LLDB=3D # WITH_BOOT=3D (Note: buildkernel currently fails.) # clang++ --version FreeBSD clang version 5.0.0 (tags/RELEASE_500/final 312559) (based on = LLVM 5.0.0svn) Target: powerpc-unknown-freebsd12.0 Thread model: posix InstalledDir: /usr/bin # uname -apKU FreeBSD FBSDG4S 12.0-CURRENT FreeBSD 12.0-CURRENT r326192M powerpc = powerpc 1200054 1200054 # svnlite info /usr/ports/ | grep "Re[plv]" Relative URL: ^/head Repository Root: https://svn.freebsd.org/ports Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5 Revision: 455204 Last Changed Rev: 455204 =3D=3D=3D Mark Millard markmi at dsl-only.net