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 # 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 1.20.6 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/go1.20.6,
70 # $HOME/sdk/go1.20.6, 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
74 bootgo=1.20.6
75
76 set -e
77
78 if [[ ! -f run.bash ]]; then
79 echo 'make.bash must be run from $GOROOT/src' 1>&2
80 exit 1
81 fi
82
83 if [[ "$GOBUILDTIMELOGFILE" != "" ]]; then
84 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE"
85 fi
86
87 # Test for Windows.
88 case "$(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 ;;
95 esac
96
97 # Test for bad ld.
98 if 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
107 fi
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.
112 for se_mount in /selinux /sys/fs/selinux
113 do
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
129 done
130
131 # Test for debian/kFreeBSD.
132 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
133 # disable cgo manually.
134 if [[ "$(uname -s)" == "GNU/kFreeBSD" ]]; then
135 export CGO_ENABLED=0
136 fi
137
138 # Clean old generated file that will cause problems in the build.
139 rm -f ./runtime/runtime_defs.go
140
141 # Finally! Run the build.
142
143 verbose=false
144 vflag=""
145 if [[ "$1" == "-v" ]]; then
146 verbose=true
147 vflag=-v
148 shift
149 fi
150
151 goroot_bootstrap_set=${GOROOT_BOOTSTRAP+"true"}
152 if [[ -z "$GOROOT_BOOTSTRAP" ]]; then
153 GOROOT_BOOTSTRAP="$HOME/go1.4"
154 for d in sdk/go$bootgo go$bootgo; do
155 if [[ -d "$HOME/$d" ]]; then
156 GOROOT_BOOTSTRAP="$HOME/$d"
157 fi
158 done
159 fi
160 export GOROOT_BOOTSTRAP
161
162 bootstrapenv() {
163 GOROOT="$GOROOT_BOOTSTRAP" GO111MODULE=off GOENV=off GOOS= GOARCH= GOEXPERIMENT= GOFLAGS= "$@"
164 }
165
166 export GOROOT="$(cd .. && pwd)"
167 IFS=$'\n'; for go_exe in $(type -ap go); do
168 if [[ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]]; then
169 GOROOT_BOOTSTRAP=""
170 goroot=$(bootstrapenv "$go_exe" env GOROOT)
171 if [[ "$goroot" != "$GOROOT" ]]; then
172 if [[ "$goroot_bootstrap_set" == "true" ]]; then
173 printf 'WARNING: %s does not exist, found %s from env\n' "$GOROOT_BOOTSTRAP/bin/go" "$go_exe" >&2
174 printf 'WARNING: set %s as GOROOT_BOOTSTRAP\n' "$goroot" >&2
175 fi
176 GOROOT_BOOTSTRAP="$goroot"
177 fi
178 fi
179 done; unset IFS
180 if [[ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]]; then
181 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
182 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
183 exit 1
184 fi
185 # Get the exact bootstrap toolchain version to help with debugging.
186 # We clear GOOS and GOARCH to avoid an ominous but harmless warning if
187 # the bootstrap doesn't support them.
188 GOROOT_BOOTSTRAP_VERSION=$(bootstrapenv "$GOROOT_BOOTSTRAP/bin/go" version | sed 's/go version //')
189 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)"
190 if $verbose; then
191 echo cmd/dist
192 fi
193 if [[ "$GOROOT_BOOTSTRAP" == "$GOROOT" ]]; then
194 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
195 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go $bootgo." >&2
196 exit 1
197 fi
198 rm -f cmd/dist/dist
199 bootstrapenv "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
200
201 # -e doesn't propagate out of eval, so check success by hand.
202 eval $(./cmd/dist/dist env -p || echo FAIL=true)
203 if [[ "$FAIL" == true ]]; then
204 exit 1
205 fi
206
207 if $verbose; then
208 echo
209 fi
210
211 if [[ "$1" == "--dist-tool" ]]; then
212 # Stop after building dist tool.
213 mkdir -p "$GOTOOLDIR"
214 if [[ "$2" != "" ]]; then
215 cp cmd/dist/dist "$2"
216 fi
217 mv cmd/dist/dist "$GOTOOLDIR"/dist
218 exit 0
219 fi
220
221 # Run dist bootstrap to complete make.bash.
222 # Bootstrap installs a proper cmd/dist, built with the new toolchain.
223 # Throw ours, built with the bootstrap toolchain, away after bootstrap.
224 ./cmd/dist/dist bootstrap -a $vflag $GO_DISTFLAGS "$@"
225 rm -f ./cmd/dist/dist
226
227 # DO NOT ADD ANY NEW CODE HERE.
228 # The bootstrap+rm above are the final step of make.bash.
229 # If something must be added, add it to cmd/dist's cmdbootstrap,
230 # to avoid needing three copies in three different shell languages
231 # (make.bash, make.bat, make.rc).
232
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