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.
6 # See golang.org/s/go15bootstrap for an overview of the build process.
8 # Environment variables that control make.bash:
10 # GOROOT_FINAL: The expected final Go root, baked into binaries.
11 # The default is the location of the Go tree during the build.
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.
18 # GOARCH: The target architecture for installed packages and tools.
20 # GOOS: The target operating system for installed packages and tools.
22 # GO_GCFLAGS: Additional go tool compile arguments to use when
23 # building the packages and commands.
25 # GO_LDFLAGS: Additional go tool link arguments to use when
26 # building the commands.
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.
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.
37 # GO_LDSO: Sets the default dynamic linker/loader (ld.so) to be used
38 # by the internal linker.
40 # CC: Command line to run to compile C code for GOHOSTARCH.
41 # Default is "gcc". Also supported: "clang".
43 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH.
44 # This is used by cgo. Default is CC.
46 # CC_FOR_${GOOS}_${GOARCH}: Command line to run to compile C code for specified ${GOOS} and ${GOARCH}.
47 # (for example, CC_FOR_linux_arm)
48 # If this is not set, the build will use CC_FOR_TARGET if appropriate, or CC.
50 # CXX_FOR_TARGET: Command line to run to compile C++ code for GOARCH.
51 # This is used by cgo. Default is CXX, or, if that is not set,
54 # CXX_FOR_${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.
58 # FC: Command line to run to compile Fortran code for GOARCH.
59 # This is used by cgo. Default is "gfortran".
61 # PKG_CONFIG: Path to pkg-config tool. Default is "pkg-config".
63 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap".
64 # (Or just pass them to the make.bash command line.)
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.
70 # GOROOT_BOOTSTRAP: A working Go tree >= Go 1.17 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,
73 # $HOME/sdk/go1.17, 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.
79 if [ ! -f run.bash ]; then
80 echo 'make.bash must be run from $GOROOT/src' 1>&2
84 if [ "$GOBUILDTIMELOGFILE" != "" ]; then
85 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE"
90 *MINGW* | *WIN32* | *CYGWIN*)
91 echo 'ERROR: Do not use make.bash to build on Windows.'
92 echo 'Use make.bat instead.'
99 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
100 echo 'ERROR: Your system has gold 2.20 installed.'
101 echo 'This version is shipped by Ubuntu even though'
102 echo 'it is known not to work on Ubuntu.'
103 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
105 echo 'Run sudo apt-get remove binutils-gold.'
110 # Test for bad SELinux.
111 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
112 # so loop through the possible selinux mount points.
113 for se_mount in /selinux /sys/fs/selinux
115 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
116 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
117 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
118 echo "Go. You can enable the features that Go needs via the following "
119 echo "command (as root):"
120 echo " # setsebool -P allow_execstack 1"
122 echo "Note that this affects your system globally! "
124 echo "The build will continue in five seconds in case we "
125 echo "misdiagnosed the issue..."
132 # Test for debian/kFreeBSD.
133 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
134 # disable cgo manually.
135 if [ "$(uname -s)" = "GNU/kFreeBSD" ]; then
139 # Clean old generated file that will cause problems in the build.
140 rm -f ./runtime/runtime_defs.go
142 # Finally! Run the build.
146 if [ "$1" = "-v" ]; then
152 goroot_bootstrap_set=${GOROOT_BOOTSTRAP+"true"}
153 if [ -z "$GOROOT_BOOTSTRAP" ]; then
154 GOROOT_BOOTSTRAP="$HOME/go1.4"
155 for d in sdk/go1.17 go1.17; do
156 if [ -d "$HOME/$d" ]; then
157 GOROOT_BOOTSTRAP="$HOME/$d"
161 export GOROOT_BOOTSTRAP
163 export GOROOT="$(cd .. && pwd)"
164 IFS=$'\n'; for go_exe in $(type -ap go); do
165 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
166 goroot=$(GOROOT='' GOOS='' GOARCH='' "$go_exe" env GOROOT)
167 if [ "$goroot" != "$GOROOT" ]; then
168 if [ "$goroot_bootstrap_set" = "true" ]; then
169 printf 'WARNING: %s does not exist, found %s from env\n' "$GOROOT_BOOTSTRAP/bin/go" "$go_exe" >&2
170 printf 'WARNING: set %s as GOROOT_BOOTSTRAP\n' "$goroot" >&2
172 GOROOT_BOOTSTRAP=$goroot
176 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
177 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
178 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17." >&2
181 # Get the exact bootstrap toolchain version to help with debugging.
182 # We clear GOOS and GOARCH to avoid an ominous but harmless warning if
183 # the bootstrap doesn't support them.
184 GOROOT_BOOTSTRAP_VERSION=$(GOOS= GOARCH= GOEXPERIMENT= $GOROOT_BOOTSTRAP/bin/go version | sed 's/go version //')
185 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)"
189 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then
190 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
191 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.17." >&2
195 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" GO111MODULE=off GOEXPERIMENT="" GOENV=off GOFLAGS="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
197 # -e doesn't propagate out of eval, so check success by hand.
198 eval $(./cmd/dist/dist env -p || echo FAIL=true)
199 if [ "$FAIL" = true ]; then
207 if [ "$1" = "--dist-tool" ]; then
208 # Stop after building dist tool.
209 mkdir -p "$GOTOOLDIR"
210 if [ "$2" != "" ]; then
211 cp cmd/dist/dist "$2"
213 mv cmd/dist/dist "$GOTOOLDIR"/dist
217 # Run dist bootstrap to complete make.bash.
218 # Bootstrap installs a proper cmd/dist, built with the new toolchain.
219 # Throw ours, built with the bootstrap toolchain, away after bootstrap.
220 ./cmd/dist/dist bootstrap -a $vflag $GO_DISTFLAGS "$@"
221 rm -f ./cmd/dist/dist
223 # DO NOT ADD ANY NEW CODE HERE.
224 # The bootstrap+rm above are the final step of make.bash.
225 # If something must be added, add it to cmd/dist's cmdbootstrap,
226 # to avoid needing three copies in three different shell languages
227 # (make.bash, make.bat, make.rc).