Mercurial > hg > aboriginal
view build.sh @ 941:7dd3fb4dd333
Minor cleanups and comments, introduce check_prerequisite function.
author | Rob Landley <rob@landley.net> |
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date | Tue, 22 Dec 2009 11:51:52 -0600 |
parents | a541c5a96ff3 |
children | fc134a13357e |
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#!/bin/bash # Run all the steps needed to build a system image from scratch. # If run with no arguments, list architectures. if [ $# -ne 1 ] then echo "Usage: $0 ARCH" . sources/include.sh read_arch_dir fi ARCH="$1" # Download source code and build host tools. time ./download.sh || exit 1 # host-tools populates one directory with every command the build needs, # so we can ditch the old $PATH afterwards. time ./host-tools.sh || exit 1 # A function to skip stages that have already been done (because the # tarball they create is already there). not_already() { if [ -f "build/$1-$ARCH.tar.bz2" ] then echo "=== Skipping $1-$ARCH (already there)" return 1 fi return 0 } # Do we need to build the simple cross compiler? # This version has no thread support, no libgcc_s.so, doesn't include # uClibc++, and is dynamically linked against the host's shared libraries. if not_already cross-compiler then # If we need to build cross compiler, assume root filesystem is stale. rm -rf "build/root-filesystem-$ARCH.tar.bz2" time ./cross-compiler.sh "$ARCH" || exit 1 fi # Optionally, we can build a statically linked compiler via canadian cross. # We don't autodetect the host because i686 is more portable (running on # both 64 and 32 bit hosts), but x86_64 is (slightly) faster on a 64 bit host. if [ ! -z "$STATIC_CROSS_COMPILER_HOST" ] && not_already cross-static then # These are statically linked against uClibc on the host (for portability), # built --with-shared, and have uClibc++ installed. # To build each of these we need two existing cross compilers: one for # the host (to build the executables) and one for the target (to build # the libraries). BUILD_STATIC=1 FROM_ARCH="$STATIC_CROSS_COMPILER_HOST" NATIVE_TOOLCHAIN=only \ ROOT_NODIRS=1 STAGE_NAME=cross-static ./root-filesystem.sh "$ARCH" || exit 1 fi # Optionally, we can build a static native compiler. (The one in # root-filesystem is dynamically linked against uClibc, this one can # presumably be untarred and run on any appropriate host system.) if [ ! -z "$BUILD_STATIC_NATIVE_COMPILER" ] && not_already native-compiler then # Build static native compilers for each target, possibly in parallel BUILD_STATIC=1 NATIVE_TOOLCHAIN=only STAGE_NAME=native-compiler \ ./root-filesystem.sh "$ARCH" fi # Do we need to build the root filesystem? if not_already root-filesystem then # If we need to build root filesystem, assume system image is stale. rm -rf "build/system-image-$ARCH.tar.bz2" time ./root-filesystem.sh "$ARCH" || exit 1 fi if not_already system-image then time ./system-image.sh $1 || exit 1 fi