Text file
src/make.bash
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 # GOROOT_FINAL: The expected final Go root, baked into binaries.
11 # The default is the location of the Go tree during the build.
12 #
13 # GOHOSTARCH: The architecture for host tools (compilers and
14 # binaries). Binaries of this type must be executable on the current
15 # system, so the only common reason to set this is to set
16 # GOHOSTARCH=386 on an amd64 machine.
17 #
18 # GOARCH: The target architecture for installed packages and tools.
19 #
20 # GOOS: The target operating system for installed packages and tools.
21 #
22 # GO_GCFLAGS: Additional go tool compile arguments to use when
23 # building the packages and commands.
24 #
25 # GO_LDFLAGS: Additional go tool link arguments to use when
26 # building the commands.
27 #
28 # CGO_ENABLED: Controls cgo usage during the build. Set it to 1
29 # to include all cgo related files, .c and .go file with "cgo"
30 # build directive, in the build. Set it to 0 to ignore them.
31 #
32 # GO_EXTLINK_ENABLED: Set to 1 to invoke the host linker when building
33 # packages that use cgo. Set to 0 to do all linking internally. This
34 # controls the default behavior of the linker's -linkmode option. The
35 # default value depends on the system.
36 #
37 # GO_LDSO: Sets the default dynamic linker/loader (ld.so) to be used
38 # by the internal linker.
39 #
40 # CC: Command line to run to compile C code for GOHOSTARCH.
41 # Default is "gcc". Also supported: "clang".
42 #
43 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH.
44 # This is used by cgo. Default is CC.
45 #
46 # CC_FOR_${GOOS}_${GOARCH}: Command line to run to compile C code for specified ${GOOS} and ${GOARCH}.
47 # (for example, CC_FOR_linux_arm)
48 # If this is not set, the build will use CC_FOR_TARGET if appropriate, or CC.
49 #
50 # CXX_FOR_TARGET: Command line to run to compile C++ code for GOARCH.
51 # This is used by cgo. Default is CXX, or, if that is not set,
52 # "g++" or "clang++".
53 #
54 # CXX_FOR_${GOOS}_${GOARCH}: Command line to run to compile C++ code for specified ${GOOS} and ${GOARCH}.
55 # (for example, CXX_FOR_linux_arm)
56 # If this is not set, the build will use CXX_FOR_TARGET if appropriate, or CXX.
57 #
58 # FC: Command line to run to compile Fortran code for GOARCH.
59 # This is used by cgo. Default is "gfortran".
60 #
61 # PKG_CONFIG: Path to pkg-config tool. Default is "pkg-config".
62 #
63 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap".
64 # (Or just pass them to the make.bash command line.)
65 #
66 # GOBUILDTIMELOGFILE: If set, make.bash and all.bash write
67 # timing information to this file. Useful for profiling where the
68 # time goes when these scripts run.
69 #
70 # GOROOT_BOOTSTRAP: A working Go tree >= Go 1.17.13 for bootstrap.
71 # If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is
72 # tried for all "go" in $PATH. By default, one of $HOME/go1.17.13,
73 # $HOME/sdk/go1.17.13, or $HOME/go1.4, whichever exists, in that order.
74 # We still check $HOME/go1.4 to allow for build scripts that still hard-code
75 # that name even though they put newer Go toolchains there.
76
77 bootgo=1.17.13
78
79 set -e
80
81 if [ ! -f run.bash ]; then
82 echo 'make.bash must be run from $GOROOT/src' 1>&2
83 exit 1
84 fi
85
86 if [ "$GOBUILDTIMELOGFILE" != "" ]; then
87 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE"
88 fi
89
90 # Test for Windows.
91 case "$(uname)" in
92 *MINGW* | *WIN32* | *CYGWIN*)
93 echo 'ERROR: Do not use make.bash to build on Windows.'
94 echo 'Use make.bat instead.'
95 echo
96 exit 1
97 ;;
98 esac
99
100 # Test for bad ld.
101 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
102 echo 'ERROR: Your system has gold 2.20 installed.'
103 echo 'This version is shipped by Ubuntu even though'
104 echo 'it is known not to work on Ubuntu.'
105 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
106 echo
107 echo 'Run sudo apt-get remove binutils-gold.'
108 echo
109 exit 1
110 fi
111
112 # Test for bad SELinux.
113 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
114 # so loop through the possible selinux mount points.
115 for se_mount in /selinux /sys/fs/selinux
116 do
117 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
118 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
119 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
120 echo "Go. You can enable the features that Go needs via the following "
121 echo "command (as root):"
122 echo " # setsebool -P allow_execstack 1"
123 echo
124 echo "Note that this affects your system globally! "
125 echo
126 echo "The build will continue in five seconds in case we "
127 echo "misdiagnosed the issue..."
128
129 sleep 5
130 fi
131 fi
132 done
133
134 # Test for debian/kFreeBSD.
135 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
136 # disable cgo manually.
137 if [ "$(uname -s)" = "GNU/kFreeBSD" ]; then
138 export CGO_ENABLED=0
139 fi
140
141 # Clean old generated file that will cause problems in the build.
142 rm -f ./runtime/runtime_defs.go
143
144 # Finally! Run the build.
145
146 verbose=false
147 vflag=""
148 if [ "$1" = "-v" ]; then
149 verbose=true
150 vflag=-v
151 shift
152 fi
153
154 goroot_bootstrap_set=${GOROOT_BOOTSTRAP+"true"}
155 if [ -z "$GOROOT_BOOTSTRAP" ]; then
156 GOROOT_BOOTSTRAP="$HOME/go1.4"
157 for d in sdk/go$bootgo go$bootgo; do
158 if [ -d "$HOME/$d" ]; then
159 GOROOT_BOOTSTRAP="$HOME/$d"
160 fi
161 done
162 fi
163 export GOROOT_BOOTSTRAP
164
165 export GOROOT="$(cd .. && pwd)"
166 IFS=$'\n'; for go_exe in $(type -ap go); do
167 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
168 goroot=$(GOROOT='' GOOS='' GOARCH='' "$go_exe" env GOROOT)
169 if [ "$goroot" != "$GOROOT" ]; then
170 if [ "$goroot_bootstrap_set" = "true" ]; then
171 printf 'WARNING: %s does not exist, found %s from env\n' "$GOROOT_BOOTSTRAP/bin/go" "$go_exe" >&2
172 printf 'WARNING: set %s as GOROOT_BOOTSTRAP\n' "$goroot" >&2
173 fi
174 GOROOT_BOOTSTRAP=$goroot
175 fi
176 fi
177 done; unset IFS
178 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
179 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
180 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
181 exit 1
182 fi
183 # Get the exact bootstrap toolchain version to help with debugging.
184 # We clear GOOS and GOARCH to avoid an ominous but harmless warning if
185 # the bootstrap doesn't support them.
186 GOROOT_BOOTSTRAP_VERSION=$(GOOS= GOARCH= GOEXPERIMENT= $GOROOT_BOOTSTRAP/bin/go version | sed 's/go version //')
187 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)"
188 if $verbose; then
189 echo cmd/dist
190 fi
191 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then
192 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
193 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
194 exit 1
195 fi
196 rm -f cmd/dist/dist
197 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" GO111MODULE=off GOEXPERIMENT="" GOENV=off GOFLAGS="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
198
199 # -e doesn't propagate out of eval, so check success by hand.
200 eval $(./cmd/dist/dist env -p || echo FAIL=true)
201 if [ "$FAIL" = true ]; then
202 exit 1
203 fi
204
205 if $verbose; then
206 echo
207 fi
208
209 if [ "$1" = "--dist-tool" ]; then
210 # Stop after building dist tool.
211 mkdir -p "$GOTOOLDIR"
212 if [ "$2" != "" ]; then
213 cp cmd/dist/dist "$2"
214 fi
215 mv cmd/dist/dist "$GOTOOLDIR"/dist
216 exit 0
217 fi
218
219 # Run dist bootstrap to complete make.bash.
220 # Bootstrap installs a proper cmd/dist, built with the new toolchain.
221 # Throw ours, built with the bootstrap toolchain, away after bootstrap.
222 ./cmd/dist/dist bootstrap -a $vflag $GO_DISTFLAGS "$@"
223 rm -f ./cmd/dist/dist
224
225 # DO NOT ADD ANY NEW CODE HERE.
226 # The bootstrap+rm above are the final step of make.bash.
227 # If something must be added, add it to cmd/dist's cmdbootstrap,
228 # to avoid needing three copies in three different shell languages
229 # (make.bash, make.bat, make.rc).
230
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