Mercurial > hg > aboriginal
view build.sh @ 1737:1acbe7e78d9d draft
Switch from bz2 to gz tarball output.
bz2 is slowly being replaced by lz variants, but gzip isn't going anywhere.
(It retains a niche as a streaming protocol, it's the 80/20 solution optimizing
for speed, low memory requirements, and simple compressor implementation.)
author | Rob Landley <rob@landley.net> |
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date | Fri, 20 Feb 2015 13:12:45 -0600 |
parents | 7f1b9fb1099e |
children | 4ca4ddd185db |
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#!/bin/bash # Run all the steps needed to build a system image from scratch. # The default set of stages run by this script is (in order): # download, host-tools, simple-cross-compiler, root-filesystem, # native-compiler, system-image. # That sanitizes the host build environment and builds a cross compiler, # cross compiles a root filesystem and a native toolchain for the target, # and finally packages the root filesystem up into a system image bootable # by qemu. # The optional cross-compiler stage (after simple-cross-compiler but before # root-filesystem) creates a more powerful and portable cross compiler # that can be used to cross compile more stuff (if you're into that sort of # thing). To enable that: # CROSS_COMPILER_HOST=i686 ./build.sh $TARGET # Where "i686" is whichever target you want the new cross compiler to run on. # The simplest set of stages (if you run them yourself) is: # download, simple-cross-compiler, root-filesystem, system-image. # If this script was run with no arguments, list available architectures [ ! -z "$2" ] && REBUILD="$2" if [ $# -lt 1 ] || [ $# -gt 2 ] || [ ! -e sources/targets/"$1" ] then echo echo "Usage: $0 TARGET [REBUILD_FROM_STAGE]" echo echo "Supported architectures:" ls sources/targets echo echo "Build stages:" sed -n 's/#.*//;s@.*[.]/\([^.]*\)[.]sh.*@\1@p' "$0" | uniq | xargs echo echo exit 1 fi ARCH="$1" # Use environment variables persistently set in the config file. [ -e config ] && source config # Allow the output directory to be overridden. This hasn't been tested in # forever and probably doesn't work. [ -z "$BUILD" ] && BUILD="build" # Very simple dependency tracking: skip stages that have already been done # (because the tarball they create is already there). # If you need to rebuild a stage (and everything after it), delete its # tarball out of "build" and re-run build.sh. not_already() { [ "$REBUILD" == "$1" ] && zap "$1" if [ -f "$BUILD/$1-$ARCH.tar.gz" ] then echo "=== Skipping $1-$ARCH (already there)" return 1 fi return 0 } zap() { for i in "$@" do rm -f "$BUILD/$i-$ARCH.tar.bz2" done } # The first two stages (download.sh and host-tools.sh) are architecture # independent. In order to allow multiple builds in parallel, re-running # them after they've already completed must be a safe NOP. # Download source code. time ./download.sh || exit 1 # Build host tools. This populates a single directory with every command the # build needs, so we can ditch the host's $PATH afterwards. if [ -z "$NO_HOST_TOOLS" ] then time ./host-tools.sh || exit 1 fi # Do we need to build the simple cross compiler? if not_already simple-cross-compiler then # If we need to build cross compiler, assume root filesystem is stale. zap root-filesystem cross-compiler native-compiler linux-kernel time ./simple-cross-compiler.sh "$ARCH" || exit 1 fi # Optionally, we can build a more capable statically linked compiler via # canadian cross. (It's more powerful than we need here, but if you're going # to use the cross compiler in other contexts this is probably what you want.) if [ ! -z "$CROSS_COMPILER_HOST" ] && not_already cross-compiler then zap root-filesystem native-compiler linux-kernel # Build the host compiler if necessary if ARCH="$CROSS_COMPILER_HOST" not_already simple-cross-compiler then time ./simple-cross-compiler.sh "$CROSS_COMPILER_HOST" || exit 1 fi time ./cross-compiler.sh "$ARCH" || exit 1 fi # Build the basic root filesystem. if not_already root-filesystem then zap system-image [ "$SYSIMAGE_TYPE" == rootfs ] && zap linux-kernel time ./root-filesystem.sh "$ARCH" || exit 1 fi # Build a native compiler. It's statically linked by default so it can # run on an arbitrary host system. if not_already native-compiler then zap system-image time ./native-compiler.sh "$ARCH" || exit 1 fi # Package it all up into something qemu can boot. if not_already system-image then time ./system-image.sh $1 || exit 1 fi