From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 6868613252732944384 X-Received: by 2002:a1c:bad5:: with SMTP id k204mr2011620wmf.111.1599826392531; Fri, 11 Sep 2020 05:13:12 -0700 (PDT) X-BeenThere: isar-users@googlegroups.com Received: by 2002:a1c:a58a:: with SMTP id o132ls940622wme.3.gmail; Fri, 11 Sep 2020 05:13:11 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz1npG5iZMHDQzCbF3U6Ol3bCKYMVSSziX0D+L7AcsNHxPqIC4drPITlHMfar45WUdPnq4x X-Received: by 2002:a1c:e919:: with SMTP id q25mr1926627wmc.123.1599826391510; Fri, 11 Sep 2020 05:13:11 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1599826391; cv=none; d=google.com; s=arc-20160816; b=Y1jElz6zSEH/YnH1X8EXBgF3noNITBLhkkYJ2ZcOcTKS4+6/8YKwb1mAAc6e23mWGQ T7pz9y2glS/JA1vP2n+z/6Lzg3KpbTSR+CJvzikFqnYdqQV7jFTcXKZI4fGoBmqQ/HZO 9RKevZa5PsfpND0AI6Xb3tuMlKaFsmkZVhUKNxTdWeu6yizccJE7e/v06JodvdChRAjH rRsR93OjbjzBguHzaYe1l5zwghiXAxzcllrhUIkrvinBb4zP9hYXWbiTeaDXLD6Jd5N/ 4LToB35+f213yjj9Lq6J4VWzgBK11c5J1DndgKh8b59i5sDpeci8J8BDaVYvl9jQMU1a 7Ijw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from; bh=Pt0QH6+0WRi0KNTUqANgvOeYu2Z7lidlNAy76q340bw=; b=kIi/UD0v4886vvTMroFm/7jBpsvpMKVuWo1hotzZrt1sh+1tmIckKcMaHQRX31OBU6 2XxSLUJe6FUsQj7DF+G8JzO8ym8TWR3ty4B3PO2+I3T+kDsYhFWXV+u8MBZ/3akcVTs4 SLEFiQzM8fKmFN5p/8HpsInQ1JvUFqrDo13Cb5UB4SupAsGrjudR6dl9RZmIU4jSUJMf QAGL4VqwHLguAreTM9JZkQu3w8avath3nI32vGo779/WO1Mzn3ADM0dkCqDJUSkmzwkA bfOdLcfqIIZl623d5erI10Z/LDZBpfigZc7D6uBD2F6MeALJsQ4M876uMJdFJAehytHC oq9w== ARC-Authentication-Results: i=1; gmr-mx.google.com; spf=pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.14 as permitted sender) smtp.mailfrom=jan.kiszka@siemens.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=siemens.com Return-Path: Received: from david.siemens.de (david.siemens.de. [192.35.17.14]) by gmr-mx.google.com with ESMTPS id f134si302216wme.4.2020.09.11.05.13.11 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 11 Sep 2020 05:13:11 -0700 (PDT) Received-SPF: pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.14 as permitted sender) client-ip=192.35.17.14; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of jan.kiszka@siemens.com designates 192.35.17.14 as permitted sender) smtp.mailfrom=jan.kiszka@siemens.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=siemens.com Received: from mail2.sbs.de (mail2.sbs.de [192.129.41.66]) by david.siemens.de (8.15.2/8.15.2) with ESMTPS id 08BCDBlB019552 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Fri, 11 Sep 2020 14:13:11 +0200 Received: from md1f2u6c.ad001.siemens.net ([167.87.49.221]) by mail2.sbs.de (8.15.2/8.15.2) with ESMTP id 08BCD977012908 for ; Fri, 11 Sep 2020 14:13:10 +0200 From: Jan Kiszka To: isar-users Subject: [PATCH v2 4/4] doc: Describe new compat arch support Date: Fri, 11 Sep 2020 14:13:09 +0200 Message-Id: X-Mailer: git-send-email 2.26.2 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TUID: 6cl4QV82Y4eu From: Jan Kiszka Signed-off-by: Jan Kiszka --- doc/user_manual.md | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/user_manual.md b/doc/user_manual.md index 9c28d165..60802dc6 100644 --- a/doc/user_manual.md +++ b/doc/user_manual.md @@ -723,6 +723,19 @@ Debian cross-compilation works out of the box starting from Debian stretch distr Experimental support for riscv64 is available as well. +### Cross-building for a compat architecture + +Some architectures, under Isar amd64 and arm64 so far, support running 32-bit +legacy applications on 64-bit kernels. Debian supports this via the multiarch +concept. + +Isar can build 32-bit packages as part of a 64-bit image build and also enable +the image with the necessary packages. To activate the compat mode of a build, +set `ISAR_ENABLE_COMPAT_ARCH = "1"` in `local.conf`. Packages that shall be +built for the compat arch need to be tagged individually by setting +`PACKAGE_ARCH = "${COMPAT_DISTRO_ARCH}"` in the package recipe. Non-tagged +packages will continue to be built for the primary target architecture. + ## Examining and debugging package generation inside their buildchroot -- 2.26.2