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 # CXX_FOR_TARGET: Command line to run to compile C++ code for GOARCH.
47 # This is used by cgo. Default is CXX, or, if that is not set,
50 # FC: Command line to run to compile Fortran code for GOARCH.
51 # This is used by cgo. Default is "gfortran".
53 # PKG_CONFIG: Path to pkg-config tool. Default is "pkg-config".
55 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap".
56 # (Or just pass them to the make.bash command line.)
58 # GOBUILDTIMELOGFILE: If set, make.bash and all.bash write
59 # timing information to this file. Useful for profiling where the
60 # time goes when these scripts run.
62 # GOROOT_BOOTSTRAP: A working Go tree >= Go 1.4 for bootstrap.
63 # If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is
64 # tried for all "go" in $PATH. $HOME/go1.4 by default.
68 unset GOBIN # Issue 14340
72 if [ ! -f run.bash ]; then
73 echo 'make.bash must be run from $GOROOT/src' 1>&2
77 if [ "$GOBUILDTIMELOGFILE" != "" ]; then
78 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE"
83 *MINGW* | *WIN32* | *CYGWIN*)
84 echo 'ERROR: Do not use make.bash to build on Windows.'
85 echo 'Use make.bat instead.'
92 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
93 echo 'ERROR: Your system has gold 2.20 installed.'
94 echo 'This version is shipped by Ubuntu even though'
95 echo 'it is known not to work on Ubuntu.'
96 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
98 echo 'Run sudo apt-get remove binutils-gold.'
103 # Test for bad SELinux.
104 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
105 # so loop through the possible selinux mount points.
106 for se_mount in /selinux /sys/fs/selinux
108 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
109 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
110 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
111 echo "Go. You can enable the features that Go needs via the following "
112 echo "command (as root):"
113 echo " # setsebool -P allow_execstack 1"
115 echo "Note that this affects your system globally! "
117 echo "The build will continue in five seconds in case we "
118 echo "misdiagnosed the issue..."
125 # Test for debian/kFreeBSD.
126 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
127 # disable cgo manually.
128 if [ "$(uname -s)" = "GNU/kFreeBSD" ]; then
132 # On Alpine Linux, use the musl dynamic linker/loader
133 if [ -f "/etc/alpine-release" ]; then
134 if type readelf >/dev/null 2>&1; then
135 echo "int main() { return 0; }" | ${CC:-gcc} -o ./test-alpine-ldso -x c -
136 export GO_LDSO=$(readelf -l ./test-alpine-ldso | grep 'interpreter:' | sed -e 's/^.*interpreter: \(.*\)[]]/\1/')
137 rm -f ./test-alpine-ldso
141 # Clean old generated file that will cause problems in the build.
142 rm -f ./runtime/runtime_defs.go
144 # Finally! Run the build.
148 if [ "$1" = "-v" ]; then
154 export GOROOT_BOOTSTRAP=${GOROOT_BOOTSTRAP:-$HOME/go1.4}
155 export GOROOT="$(cd .. && pwd)"
156 IFS=$'\n'; for go_exe in $(type -ap go); do
157 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
158 goroot=$(GOROOT='' GOOS='' GOARCH='' "$go_exe" env GOROOT)
159 if [ "$goroot" != "$GOROOT" ]; then
160 GOROOT_BOOTSTRAP=$goroot
164 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP."
168 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
169 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
170 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
173 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then
174 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
175 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
179 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" GO111MODULE=off "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
181 # -e doesn't propagate out of eval, so check success by hand.
182 eval $(./cmd/dist/dist env -p || echo FAIL=true)
183 if [ "$FAIL" = true ]; then
191 if [ "$1" = "--dist-tool" ]; then
192 # Stop after building dist tool.
193 mkdir -p "$GOTOOLDIR"
194 if [ "$2" != "" ]; then
195 cp cmd/dist/dist "$2"
197 mv cmd/dist/dist "$GOTOOLDIR"/dist
202 if [ "$1" = "--no-clean" ]; then
207 # Run dist bootstrap to complete make.bash.
208 # Bootstrap installs a proper cmd/dist, built with the new toolchain.
209 # Throw ours, built with Go 1.4, away after bootstrap.
210 ./cmd/dist/dist bootstrap $buildall $vflag $GO_DISTFLAGS "$@"
211 rm -f ./cmd/dist/dist
213 # DO NOT ADD ANY NEW CODE HERE.
214 # The bootstrap+rm above are the final step of make.bash.
215 # If something must be added, add it to cmd/dist's cmdbootstrap,
216 # to avoid needing three copies in three different shell languages
217 # (make.bash, make.bat, make.rc).