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 1.4 for bootstrap.
71 # If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is
72 # tried for all "go" in $PATH. $HOME/go1.4 by default.
77 export GOWORK=off # Issue 51558
78 unset GOBIN # Issue 14340
82 if [ ! -f run.bash ]; then
83 echo 'make.bash must be run from $GOROOT/src' 1>&2
87 if [ "$GOBUILDTIMELOGFILE" != "" ]; then
88 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE"
93 *MINGW* | *WIN32* | *CYGWIN*)
94 echo 'ERROR: Do not use make.bash to build on Windows.'
95 echo 'Use make.bat instead.'
102 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
103 echo 'ERROR: Your system has gold 2.20 installed.'
104 echo 'This version is shipped by Ubuntu even though'
105 echo 'it is known not to work on Ubuntu.'
106 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
108 echo 'Run sudo apt-get remove binutils-gold.'
113 # Test for bad SELinux.
114 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
115 # so loop through the possible selinux mount points.
116 for se_mount in /selinux /sys/fs/selinux
118 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
119 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
120 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
121 echo "Go. You can enable the features that Go needs via the following "
122 echo "command (as root):"
123 echo " # setsebool -P allow_execstack 1"
125 echo "Note that this affects your system globally! "
127 echo "The build will continue in five seconds in case we "
128 echo "misdiagnosed the issue..."
135 # Test for debian/kFreeBSD.
136 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
137 # disable cgo manually.
138 if [ "$(uname -s)" = "GNU/kFreeBSD" ]; then
142 # Test which linker/loader our system is using, if GO_LDSO is not set.
143 if [ -z "$GO_LDSO" ] && type readelf >/dev/null 2>&1; then
144 if echo "int main() { return 0; }" | ${CC:-cc} -o ./test-musl-ldso -x c - >/dev/null 2>&1; then
145 LDSO=$(readelf -l ./test-musl-ldso | grep 'interpreter:' | sed -e 's/^.*interpreter: \(.*\)[]]/\1/') >/dev/null 2>&1
146 [ -z "$LDSO" ] || export GO_LDSO="$LDSO"
147 rm -f ./test-musl-ldso
151 # Clean old generated file that will cause problems in the build.
152 rm -f ./runtime/runtime_defs.go
154 # Finally! Run the build.
158 if [ "$1" = "-v" ]; then
164 goroot_bootstrap_set=${GOROOT_BOOTSTRAP+"true"}
165 if [ -z "$GOROOT_BOOTSTRAP" ]; then
166 GOROOT_BOOTSTRAP="$HOME/go1.4"
167 for d in sdk/go1.17 go1.17; do
168 if [ -d "$HOME/$d" ]; then
169 GOROOT_BOOTSTRAP="$HOME/$d"
173 export GOROOT_BOOTSTRAP
175 export GOROOT="$(cd .. && pwd)"
176 IFS=$'\n'; for go_exe in $(type -ap go); do
177 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
178 goroot=$(GOROOT='' GOOS='' GOARCH='' "$go_exe" env GOROOT)
179 if [ "$goroot" != "$GOROOT" ]; then
180 if [ "$goroot_bootstrap_set" = "true" ]; then
181 printf 'WARNING: %s does not exist, found %s from env\n' "$GOROOT_BOOTSTRAP/bin/go" "$go_exe" >&2
182 printf 'WARNING: set %s as GOROOT_BOOTSTRAP\n' "$goroot" >&2
184 GOROOT_BOOTSTRAP=$goroot
188 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
189 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
190 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
193 # Get the exact bootstrap toolchain version to help with debugging.
194 # We clear GOOS and GOARCH to avoid an ominous but harmless warning if
195 # the bootstrap doesn't support them.
196 GOROOT_BOOTSTRAP_VERSION=$(GOOS= GOARCH= GOEXPERIMENT= $GOROOT_BOOTSTRAP/bin/go version | sed 's/go version //')
197 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)"
201 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then
202 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
203 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
207 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" GO111MODULE=off GOEXPERIMENT="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
209 # -e doesn't propagate out of eval, so check success by hand.
210 eval $(./cmd/dist/dist env -p || echo FAIL=true)
211 if [ "$FAIL" = true ]; then
219 if [ "$1" = "--dist-tool" ]; then
220 # Stop after building dist tool.
221 mkdir -p "$GOTOOLDIR"
222 if [ "$2" != "" ]; then
223 cp cmd/dist/dist "$2"
225 mv cmd/dist/dist "$GOTOOLDIR"/dist
229 # Run dist bootstrap to complete make.bash.
230 # Bootstrap installs a proper cmd/dist, built with the new toolchain.
231 # Throw ours, built with Go 1.4, away after bootstrap.
232 ./cmd/dist/dist bootstrap -a $vflag $GO_DISTFLAGS "$@"
233 rm -f ./cmd/dist/dist
235 # DO NOT ADD ANY NEW CODE HERE.
236 # The bootstrap+rm above are the final step of make.bash.
237 # If something must be added, add it to cmd/dist's cmdbootstrap,
238 # to avoid needing three copies in three different shell languages
239 # (make.bash, make.bat, make.rc).