From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46113) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1anq3l-0005cu-1P for qemu-devel@nongnu.org; Wed, 06 Apr 2016 12:12:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1anq3g-0001E3-37 for qemu-devel@nongnu.org; Wed, 06 Apr 2016 12:12:00 -0400 Received: from ignoranthack.me ([199.102.79.106]:55150 helo=mail.ignoranthack.me) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1anq3f-0000Uo-TA for qemu-devel@nongnu.org; Wed, 06 Apr 2016 12:11:55 -0400 Received: from [192.168.200.206] (unknown [50.136.155.142]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sbruno@ignoranthack.me) by mail.ignoranthack.me (Postfix) with ESMTPSA id A75B31928E4 for ; Wed, 6 Apr 2016 16:11:26 +0000 (UTC) References: <56EEF805.8040008@freebsd.org> From: Sean Bruno Message-ID: <5705352D.7070603@freebsd.org> Date: Wed, 6 Apr 2016 09:11:25 -0700 MIME-Version: 1.0 In-Reply-To: <56EEF805.8040008@freebsd.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [FreeBSD] Host build i386 failing to build aarch64 targets List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 03/20/16 12:20, Sean Bruno wrote: > aarch64 targets are now failing to build on i386 hosts due to > missing __atomic_load_8() calls since this commit: > > https://github.com/qemu/qemu/commit/a0aa44b488b3601415d55041e4619aef5f 3a4ba8#diff-c143d686899ae51d7b927d9c682e12fd > > I'm unsure if Linux is disabling aarch64 targets for i386 hosts or > if this commit works "just fine" on Linux hosts right now, as it > doesn't work with clang or gcc. > > More or less, the code in question ends up looking like this bit > of test code: > > #include #include #include > > > #define atomic_read(ptr) \ ({ > \ typeof(*ptr) _val; \ > __atomic_load(ptr, &_val, __ATOMIC_RELAXED); \ _val; > \ }) > > int main () { int foo; int64_t foo64; > > atomic_read(&foo); atomic_read(&foo64); > > return(0); } > > > This test code will manifest the same issue as the aarch64 target > building on FreeBSD i386 with the error: > > undefined reference to `__atomic_load_8' > > This seems to be fixed with the latest commits. Thanks! sean -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAEBCgBmBQJXBTUqXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRCQUFENDYzMkU3MTIxREU4RDIwOTk3REQx MjAxRUZDQTFFNzI3RTY0AAoJEBIB78oecn5kAoYH/3Ai7IdpyxyIiRtgYDWJQcg8 GLmbu1NL5Xrh0af5DU933kCqkDlKK8qKYs89DzHMfay8TIyZFkqKF5pYy66JJAQ2 qAB9eGTL567q3QPk9iYkRLju4Y4exmBL1ZSW1fUpPKjjjBlLR7VrHjEA/Ze0zYsM +MvRJcHSf8tNawr8WfOzVgFPf8pc2K0Ix8/VZCFEdf4FcATHj2nYXTmzQmTQuWSo tqDWe02TIov0BSBaA4uG6n02F4KWglGBE+bdsuTiwxxAjkcmHLgg28h7Wupkmatj 5zarlSLIhvv7j3KAS/r8aKtQ04ydXybTo0HnPLJ9JV/xz3bAbvvKDYLMZijpm0M= =OSgq -----END PGP SIGNATURE-----