From mboxrd@z Thu Jan 1 00:00:00 1970 X-GM-THRID: 7007435916639731712 X-Received: by 2002:a17:906:d7b6:: with SMTP id pk22mr13586657ejb.156.1631545818397; Mon, 13 Sep 2021 08:10:18 -0700 (PDT) X-BeenThere: isar-users@googlegroups.com Received: by 2002:aa7:c944:: with SMTP id h4ls2892096edt.1.gmail; Mon, 13 Sep 2021 08:10:17 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxH9C8Jhq1KYmqnr8zPi8nETWHg7PfeImZ3Kxc8E5eId00KWu/vRYUFhS8okruLOKyTwDuv X-Received: by 2002:a50:f197:: with SMTP id x23mr13697789edl.222.1631545817384; Mon, 13 Sep 2021 08:10:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1631545817; cv=none; d=google.com; s=arc-20160816; b=dhi1vJYfI4tpOe4PoXS7cNOyCuQkXtJSYKR8wCsykCA+yJk0Av5jXJsAA3IbtuMCrm LeD1UhHwBDdQPzd8AgHbdYalfeHLVaWWZsUKQtapk2uqrG5OYPCCiMG/Ht0OKKxxbkaY 26m03ni9uJCa4ViWaYS02YWt4c0Iif/ZiiUeK0n4ds9BBLE6jjHSOKA7SbSkui1zUhU5 7oOekjsp57dL+orCEN7ZXCqYOXQjSboaxUtCzfKaD9+J+hkUZ5Fj0Yzn1K8oy/0HKHI1 S8Nw9HlA6qjC9m/wAR6+pVSa/bl6tisfrTCHrnFYm8R9pN5Y+2Rjcin5ROI9ksueVkph fLUg== 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=Yvars+7vaCcxAZsA/DHEBCGKQWU/ggaJFJ2rPeWHCJU=; b=DzfRYvagDPib7VCVEA5axSz7qLoPShZDlf1+4lhxUEPDdQUwDEdV0iNmt/eRdHlpT4 e0c72GbCFpQ2QpdO7MydukuJVYRuLJ0pqBWCIuQz8/beYOBq/M24NUeUxGtspgptvnQa l4ti0L7Wo49vqIIlxZZdSC5bQiXavsSFR+ZVdo9c+UhuuIlMVs3HKbc6eh8kCEtvWwPX RtqBzozApPJL62jSYPQxkTzijVAnVI0WXgBbynG89QEGSXYY7RHd7vv7MdYNghUMOBua L7ioBPzVF4iaIMGPGJtgdzdkYX4HqdUPviI8C18MET0qVSgmJh4t9YaXnRd7gkJljGS6 f1bA== ARC-Authentication-Results: i=1; gmr-mx.google.com; spf=pass (google.com: domain of ubely@ilbers.de designates 85.214.156.166 as permitted sender) smtp.mailfrom=ubely@ilbers.de Return-Path: Received: from shymkent.ilbers.de (shymkent.ilbers.de. [85.214.156.166]) by gmr-mx.google.com with ESMTPS id w12si968261edj.5.2021.09.13.08.10.17 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 13 Sep 2021 08:10:17 -0700 (PDT) Received-SPF: pass (google.com: domain of ubely@ilbers.de designates 85.214.156.166 as permitted sender) client-ip=85.214.156.166; Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of ubely@ilbers.de designates 85.214.156.166 as permitted sender) smtp.mailfrom=ubely@ilbers.de Received: from baighyz.m.ilbers.de (host-80-81-17-52.static.customer.m-online.net [80.81.17.52]) (authenticated bits=0) by shymkent.ilbers.de (8.15.2/8.15.2/Debian-8) with ESMTPSA id 18DFAAGr010048 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 13 Sep 2021 17:10:14 +0200 From: Uladzimir Bely To: isar-users@googlegroups.com Subject: [PATCH 2/2] doc: Add section about ccache usage Date: Mon, 13 Sep 2021 17:10:09 +0200 Message-Id: <20210913151009.28655-3-ubely@ilbers.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210913151009.28655-1-ubely@ilbers.de> References: <20210913151009.28655-1-ubely@ilbers.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TUID: rFxWrAHmMQin Signed-off-by: Uladzimir Bely --- doc/user_manual.md | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/doc/user_manual.md b/doc/user_manual.md index 1da0e9d..903f9ae 100644 --- a/doc/user_manual.md +++ b/doc/user_manual.md @@ -18,6 +18,7 @@ Copyright (C) 2016-2019, ilbers GmbH - [Add a New Image Type](#add-a-new-image-type) - [Add a Custom Application](#add-a-custom-application) - [Enabling Cross-compilation](#isar-cross-compilation) + - [Using ccache for custom packages](#using-ccache-for-custom-packages) - [Create an ISAR SDK root filesystem](#create-an-isar-sdk-root-filesystem) - [Create a containerized Isar SDK root filesystem](#create-a-containerized-isar-sdk-root-filesystem) - [Creation of local apt repo caching upstream Debian packages](#creation-of-local-apt-repo-caching-upstream-debian-packages) @@ -896,6 +897,21 @@ package build. To invoke it, just call `bitbake mc:${MACHINE}-${DISTRO}: -c devshell`. +## Using ccache for custom packages + +While base system is created from binary debian repositories, some user +packages are built from sources. It's possible to reduce build time +for such packages by enabling ccache. + +To enable global ccache functionality, `INHERIT += ccache` can be added +to `local.conf`. If some package requires ccache to be always disabled, +`CCACHE_DISABLE = '1'` can be used in the recipe. + +By default, ccache directory is created inside `TMPDIR`, but it can be +adjusted by `CCACHE_TOP_DIR` variable in `local.conf`. Ccache directory +`CCACHE_DIR` default value is `"${CCACHE_TOP_DIR}/${DISTRO}-${MACHINE}"`, +that means caches for different distros and machines are not overlapped. + ## Create an ISAR SDK root filesystem ### Motivation -- 2.20.1