[{"id":3673397,"web_url":"http://patchwork.ozlabs.org/comment/3673397/","msgid":"","list_archive_url":null,"date":"2026-04-04T07:07:23","subject":"Re: [PATCH] [PATCH v2] Allow building qemu tools on 32-bit hosts","submitter":{"id":183,"url":"http://patchwork.ozlabs.org/api/people/183/","name":"Michael Tokarev","email":"mjt@tls.msk.ru"},"content":"On 04.04.2026 09:12, Helge Deller wrote:\n> From: Helge Deller \n> \n> Qemu's tools like qemu-img are often needed on 32-bit platforms,\n> although the actual qemu emulators have been discontinued on 32-bit.\n> \n> To allow building the tools on 32-bit this patch implements three small\n> changes:\n> \n> a) The check in meson.build is changed to still error out if the user\n> tries to build qemu-system or qemu-user on a 32-bit platform, but allows\n> building tools (e.g. by \"--enable-tools\") alone.\n> \n> b) The compile time check in atomic.h now checks against\n> sizeof(uint64_t) so that 32-bit environments can still build\n> successfully, while 128-bit atomic operations are prevented to sneak in.\n> \n> c) Allow linking against libatomic as long as we don't build the\n> qemu-system and qemu-user binaries.\n> \n> Sucessfully tested on the 32-bit big-endian powerpc architecture.\n\nOn powerpc, util/meson.build tweak is also needed, - did you use it?\n\n> v2:\n> - keep comple time checks in atomic.h\n> - allow linking against libatomic when building tools\n> \n> Signed-off-by: Helge Deller \n> Siggested-by: Richard Henderson \n ^^^ Suggested\n\nReviewed-by: Michael Tokarev \n\nYes this makes sense too, and it looks like a good long-term solution.\n\nThank you again!\n\n/mjt","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=tls.msk.ru header.i=@tls.msk.ru header.a=rsa-sha256\n header.s=202602 header.b=G2eKNMR7;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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