Text file src/bootstrap.bash

Documentation: Index

     1#!/usr/bin/env bash
     2# Copyright 2015 The Go Authors. All rights reserved.
     3# Use of this source code is governed by a BSD-style
     4# license that can be found in the LICENSE file.
     5
     6# When run as (for example)
     7#
     8#	GOOS=linux GOARCH=ppc64 bootstrap.bash
     9#
    10# this script cross-compiles a toolchain for that GOOS/GOARCH
    11# combination, leaving the resulting tree in ../../go-${GOOS}-${GOARCH}-bootstrap.
    12# That tree can be copied to a machine of the given target type
    13# and used as $GOROOT_BOOTSTRAP to bootstrap a local build.
    14#
    15# Only changes that have been committed to Git (at least locally,
    16# not necessary reviewed and submitted to master) are included in the tree.
    17#
    18# See also golang.org/x/build/cmd/genbootstrap, which is used
    19# to generate bootstrap tgz files for builders.
    20
    21set -e
    22
    23if [ "$GOOS" = "" -o "$GOARCH" = "" ]; then
    24	echo "usage: GOOS=os GOARCH=arch ./bootstrap.bash [-force]" >&2
    25	exit 2
    26fi
    27
    28forceflag=""
    29if [ "$1" = "-force" ]; then
    30	forceflag=-force
    31	shift
    32fi
    33
    34targ="../../go-${GOOS}-${GOARCH}-bootstrap"
    35if [ -e $targ ]; then
    36	echo "$targ already exists; remove before continuing"
    37	exit 2
    38fi
    39
    40unset GOROOT
    41src=$(cd .. && pwd)
    42echo "#### Copying to $targ"
    43cp -Rp "$src" "$targ"
    44cd "$targ"
    45echo
    46echo "#### Cleaning $targ"
    47chmod -R +w .
    48rm -f .gitignore
    49if [ -e .git ]; then
    50	git clean -f -d
    51fi
    52echo
    53echo "#### Building $targ"
    54echo
    55cd src
    56./make.bash --no-banner $forceflag
    57gohostos="$(../bin/go env GOHOSTOS)"
    58gohostarch="$(../bin/go env GOHOSTARCH)"
    59goos="$(../bin/go env GOOS)"
    60goarch="$(../bin/go env GOARCH)"
    61
    62# NOTE: Cannot invoke go command after this point.
    63# We're about to delete all but the cross-compiled binaries.
    64cd ..
    65if [ "$goos" = "$gohostos" -a "$goarch" = "$gohostarch" ]; then
    66	# cross-compile for local system. nothing to copy.
    67	# useful if you've bootstrapped yourself but want to
    68	# prepare a clean toolchain for others.
    69	true
    70else
    71	rm -f bin/go_${goos}_${goarch}_exec
    72	mv bin/*_*/* bin
    73	rmdir bin/*_*
    74	rm -rf "pkg/${gohostos}_${gohostarch}" "pkg/tool/${gohostos}_${gohostarch}"
    75fi
    76
    77rm -rf pkg/bootstrap pkg/obj .git
    78
    79echo ----
    80echo Bootstrap toolchain for "$GOOS/$GOARCH" installed in "$(pwd)".
    81echo Building tbz.
    82cd ..
    83tar cf - "go-${GOOS}-${GOARCH}-bootstrap" | bzip2 -9 >"go-${GOOS}-${GOARCH}-bootstrap.tbz"
    84ls -l "$(pwd)/go-${GOOS}-${GOARCH}-bootstrap.tbz"
    85exit 0

View as plain text