Text file
src/make.bash
Documentation: Index
1#!/usr/bin/env bash
2# Copyright 2009 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# See golang.org/s/go15bootstrap for an overview of the build process.
7
8# Environment variables that control make.bash:
9#
10# GOHOSTARCH: The architecture for host tools (compilers and
11# binaries). Binaries of this type must be executable on the current
12# system, so the only common reason to set this is to set
13# GOHOSTARCH=386 on an amd64 machine.
14#
15# GOARCH: The target architecture for installed packages and tools.
16#
17# GOOS: The target operating system for installed packages and tools.
18#
19# GO_GCFLAGS: Additional go tool compile arguments to use when
20# building the packages and commands.
21#
22# GO_LDFLAGS: Additional go tool link arguments to use when
23# building the commands.
24#
25# CGO_ENABLED: Controls cgo usage during the build. Set it to 1
26# to include all cgo related files, .c and .go file with "cgo"
27# build directive, in the build. Set it to 0 to ignore them.
28#
29# GO_EXTLINK_ENABLED: Set to 1 to invoke the host linker when building
30# packages that use cgo. Set to 0 to do all linking internally. This
31# controls the default behavior of the linker's -linkmode option. The
32# default value depends on the system.
33#
34# GO_LDSO: Sets the default dynamic linker/loader (ld.so) to be used
35# by the internal linker.
36#
37# CC: Command line to run to compile C code for GOHOSTARCH.
38# Default is "gcc". Also supported: "clang".
39#
40# CC_FOR_TARGET: Command line to run to compile C code for GOARCH.
41# This is used by cgo. Default is CC.
42#
43# CC_FOR_${GOOS}_${GOARCH}: Command line to run to compile C code for specified ${GOOS} and ${GOARCH}.
44# (for example, CC_FOR_linux_arm)
45# If this is not set, the build will use CC_FOR_TARGET if appropriate, or CC.
46#
47# CXX_FOR_TARGET: Command line to run to compile C++ code for GOARCH.
48# This is used by cgo. Default is CXX, or, if that is not set,
49# "g++" or "clang++".
50#
51# CXX_FOR_${GOOS}_${GOARCH}: Command line to run to compile C++ code for specified ${GOOS} and ${GOARCH}.
52# (for example, CXX_FOR_linux_arm)
53# If this is not set, the build will use CXX_FOR_TARGET if appropriate, or CXX.
54#
55# FC: Command line to run to compile Fortran code for GOARCH.
56# This is used by cgo. Default is "gfortran".
57#
58# PKG_CONFIG: Path to pkg-config tool. Default is "pkg-config".
59#
60# GO_DISTFLAGS: extra flags to provide to "dist bootstrap".
61# (Or just pass them to the make.bash command line.)
62#
63# GOBUILDTIMELOGFILE: If set, make.bash and all.bash write
64# timing information to this file. Useful for profiling where the
65# time goes when these scripts run.
66#
67# GOROOT_BOOTSTRAP: A working Go tree >= Go 1.22.6 for bootstrap.
68# If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is
69# tried for all "go" in $PATH. By default, one of $HOME/go1.22.6,
70# $HOME/sdk/go1.22.6, or $HOME/go1.4, whichever exists, in that order.
71# We still check $HOME/go1.4 to allow for build scripts that still hard-code
72# that name even though they put newer Go toolchains there.
73
74bootgo=1.22.6
75
76set -e
77
78if [[ ! -f run.bash ]]; then
79 echo 'make.bash must be run from $GOROOT/src' 1>&2
80 exit 1
81fi
82
83if [[ "$GOBUILDTIMELOGFILE" != "" ]]; then
84 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE"
85fi
86
87# Test for Windows.
88case "$(uname)" in
89*MINGW* | *WIN32* | *CYGWIN*)
90 echo 'ERROR: Do not use make.bash to build on Windows.'
91 echo 'Use make.bat instead.'
92 echo
93 exit 1
94 ;;
95esac
96
97# Test for bad ld.
98if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
99 echo 'ERROR: Your system has gold 2.20 installed.'
100 echo 'This version is shipped by Ubuntu even though'
101 echo 'it is known not to work on Ubuntu.'
102 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
103 echo
104 echo 'Run sudo apt-get remove binutils-gold.'
105 echo
106 exit 1
107fi
108
109# Test for bad SELinux.
110# On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
111# so loop through the possible selinux mount points.
112for se_mount in /selinux /sys/fs/selinux
113do
114 if [[ -d $se_mount && -f $se_mount/booleans/allow_execstack && -x /usr/sbin/selinuxenabled ]] && /usr/sbin/selinuxenabled; then
115 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
116 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
117 echo "Go. You can enable the features that Go needs via the following "
118 echo "command (as root):"
119 echo " # setsebool -P allow_execstack 1"
120 echo
121 echo "Note that this affects your system globally! "
122 echo
123 echo "The build will continue in five seconds in case we "
124 echo "misdiagnosed the issue..."
125
126 sleep 5
127 fi
128 fi
129done
130
131# Clean old generated file that will cause problems in the build.
132rm -f ./runtime/runtime_defs.go
133
134# Finally! Run the build.
135
136verbose=false
137vflag=""
138if [[ "$1" == "-v" ]]; then
139 verbose=true
140 vflag=-v
141 shift
142fi
143
144goroot_bootstrap_set=${GOROOT_BOOTSTRAP+"true"}
145if [[ -z "$GOROOT_BOOTSTRAP" ]]; then
146 GOROOT_BOOTSTRAP="$HOME/go1.4"
147 for d in sdk/go$bootgo go$bootgo; do
148 if [[ -d "$HOME/$d" ]]; then
149 GOROOT_BOOTSTRAP="$HOME/$d"
150 fi
151 done
152fi
153export GOROOT_BOOTSTRAP
154
155bootstrapenv() {
156 GOROOT="$GOROOT_BOOTSTRAP" GO111MODULE=off GOENV=off GOOS= GOARCH= GOEXPERIMENT= GOFLAGS= "$@"
157}
158
159export GOROOT="$(cd .. && pwd)"
160IFS=$'\n'; for go_exe in $(type -ap go); do
161 if [[ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]]; then
162 goroot_bootstrap=$GOROOT_BOOTSTRAP
163 GOROOT_BOOTSTRAP=""
164 goroot=$(bootstrapenv "$go_exe" env GOROOT)
165 GOROOT_BOOTSTRAP=$goroot_bootstrap
166 if [[ "$goroot" != "$GOROOT" ]]; then
167 if [[ "$goroot_bootstrap_set" == "true" ]]; then
168 printf 'WARNING: %s does not exist, found %s from env\n' "$GOROOT_BOOTSTRAP/bin/go" "$go_exe" >&2
169 printf 'WARNING: set %s as GOROOT_BOOTSTRAP\n' "$goroot" >&2
170 fi
171 GOROOT_BOOTSTRAP="$goroot"
172 fi
173 fi
174done; unset IFS
175if [[ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]]; then
176 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
177 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
178 exit 1
179fi
180# Get the exact bootstrap toolchain version to help with debugging.
181# We clear GOOS and GOARCH to avoid an ominous but harmless warning if
182# the bootstrap doesn't support them.
183GOROOT_BOOTSTRAP_VERSION=$(bootstrapenv "$GOROOT_BOOTSTRAP/bin/go" version | sed 's/go version //')
184echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)"
185if $verbose; then
186 echo cmd/dist
187fi
188if [[ "$GOROOT_BOOTSTRAP" == "$GOROOT" ]]; then
189 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
190 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
191 exit 1
192fi
193rm -f cmd/dist/dist
194bootstrapenv "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
195
196# -e doesn't propagate out of eval, so check success by hand.
197eval $(./cmd/dist/dist env -p || echo FAIL=true)
198if [[ "$FAIL" == true ]]; then
199 exit 1
200fi
201
202if $verbose; then
203 echo
204fi
205
206if [[ "$1" == "--dist-tool" ]]; then
207 # Stop after building dist tool.
208 mkdir -p "$GOTOOLDIR"
209 if [[ "$2" != "" ]]; then
210 cp cmd/dist/dist "$2"
211 fi
212 mv cmd/dist/dist "$GOTOOLDIR"/dist
213 exit 0
214fi
215
216# Run dist bootstrap to complete make.bash.
217# Bootstrap installs a proper cmd/dist, built with the new toolchain.
218# Throw ours, built with the bootstrap toolchain, away after bootstrap.
219./cmd/dist/dist bootstrap -a $vflag $GO_DISTFLAGS "$@"
220rm -f ./cmd/dist/dist
221
222# DO NOT ADD ANY NEW CODE HERE.
223# The bootstrap+rm above are the final step of make.bash.
224# If something must be added, add it to cmd/dist's cmdbootstrap,
225# to avoid needing three copies in three different shell languages
226# (make.bash, make.bat, make.rc).
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