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[185.136.64.225]) by gmr-mx.google.com with ESMTPS id bu26-20020a056000079a00b002c56aba93edsi14071wrb.4.2023.02.20.01.05.19 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Feb 2023 01:05:19 -0800 (PST) Received-SPF: pass (google.com: domain of fm-526363-202302200905199b0142f4ff80a515f3-tsry7h@rts-flowmailer.siemens.com designates 185.136.64.225 as permitted sender) client-ip=185.136.64.225; Authentication-Results: gmr-mx.google.com; dkim=pass header.i=@siemens.com header.s=fm1 header.b=Pix58nFf; spf=pass (google.com: domain of fm-526363-202302200905199b0142f4ff80a515f3-tsry7h@rts-flowmailer.siemens.com designates 185.136.64.225 as permitted sender) smtp.mailfrom=fm-526363-202302200905199b0142f4ff80a515f3-tsrY7h@rts-flowmailer.siemens.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=siemens.com Received: by mta-64-225.siemens.flowmailer.net with ESMTPSA id 202302200905199b0142f4ff80a515f3 for ; Mon, 20 Feb 2023 10:05:19 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm1; d=siemens.com; i=adriaan.schmidt@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc:References:In-Reply-To; bh=YwI19RncXg9xWkO8V+F5VWDLl4yTQYRFJawKvbdt+HU=; b=Pix58nFfQ22B5oXFUa60tBLCy3CD4Tap0molUYrNSOyZoMMMamK43RCMtdXuc5yF9SlnpO HNUw5PiDPgD/xiRlPGqn5iGTxQ2+0Niby+eFeLtWwa7hxS/wgQCQw8F2zkLYFonpSGBU7QEM O2lRbJV5oc5gG1Ykv0lesE1urGDEk=; From: Adriaan Schmidt To: isar-users@googlegroups.com Cc: Adriaan Schmidt Subject: [PATCH v2 4/4] doc: add compat/native targets to user manual Date: Mon, 20 Feb 2023 10:05:11 +0100 Message-Id: <20230220090511.2524881-5-adriaan.schmidt@siemens.com> In-Reply-To: <20230220090511.2524881-1-adriaan.schmidt@siemens.com> References: <20230220090511.2524881-1-adriaan.schmidt@siemens.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-526363:519-21489:flowmailer X-TUID: UiwQOJcVbtiw Signed-off-by: Adriaan Schmidt --- doc/user_manual.md | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/doc/user_manual.md b/doc/user_manual.md index b9a0bb64..3db5eb26 100644 --- a/doc/user_manual.md +++ b/doc/user_manual.md @@ -963,18 +963,24 @@ Debian cross-compilation works out of the box. Currently the following build con Experimental support for riscv64 is available as well. -### Cross-building for a compat architecture +### Building for a compat and/or native 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. +the image with the necessary packages. To activate compat support, +set `ISAR_ENABLE_COMPAT_ARCH = "1"` in `local.conf`. This will install neccessary +build dependencies in the buildchroot. + +For all dpkg package recipes, Isar automatically provides a `-compat` +target that builds the package for the `COMPAT_DISTRO_ARCH`. This can be +referenced using the `DEPENDS` and `IMAGE_INSTALL` variables. + +To explicitly build a package for the build host architecture (in cross build +scenarios, or when generating an SDK), Isar automatically provides a +`-native` target for all dpkg package recipes. ### Cross Support for Imagers @@ -987,7 +993,6 @@ In case your setup does not support cross-imaging, you can disable this just for the particular image by adding `ISAR_CROSS_COMPILE = "0"` to your image recipe. - ## Examining and debugging package generation inside their buildchroot Just like OpenEmbedded, Isar supports a devshell target for all dpkg package -- 2.30.2