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 # CC: Command line to run to compile C code for GOHOSTARCH.
38 # Default is "gcc". Also supported: "clang".
40 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH.
41 # This is used by cgo. Default is CC.
43 # CXX_FOR_TARGET: Command line to run to compile C++ code for GOARCH.
44 # This is used by cgo. Default is CXX, or, if that is not set,
47 # FC: Command line to run to compile Fortran code for GOARCH.
48 # This is used by cgo. Default is "gfortran".
50 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap".
53 if [ ! -f run.bash ]; then
54 echo 'make.bash must be run from $GOROOT/src' 1>&2
60 *MINGW* | *WIN32* | *CYGWIN*)
61 echo 'ERROR: Do not use make.bash to build on Windows.'
62 echo 'Use make.bat instead.'
69 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
70 echo 'ERROR: Your system has gold 2.20 installed.'
71 echo 'This version is shipped by Ubuntu even though'
72 echo 'it is known not to work on Ubuntu.'
73 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
75 echo 'Run sudo apt-get remove binutils-gold.'
80 # Test for bad SELinux.
81 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
82 # so loop through the possible selinux mount points.
83 for se_mount in /selinux /sys/fs/selinux
85 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
86 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
87 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
88 echo "Go. You can enable the features that Go needs via the following "
89 echo "command (as root):"
90 echo " # setsebool -P allow_execstack 1"
92 echo "Note that this affects your system globally! "
94 echo "The build will continue in five seconds in case we "
95 echo "misdiagnosed the issue..."
102 # Test for debian/kFreeBSD.
103 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
104 # disable cgo manually.
105 if [ "$(uname -s)" == "GNU/kFreeBSD" ]; then
109 # Clean old generated file that will cause problems in the build.
110 rm -f ./runtime/runtime_defs.go
112 # Finally! Run the build.
114 echo '##### Building Go bootstrap tool.'
116 export GOROOT="$(cd .. && pwd)"
117 GOROOT_BOOTSTRAP=${GOROOT_BOOTSTRAP:-$HOME/go1.4}
118 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
119 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
120 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
123 if [ "$GOROOT_BOOTSTRAP" == "$GOROOT" ]; then
124 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
125 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
129 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
131 # -e doesn't propagate out of eval, so check success by hand.
132 eval $(./cmd/dist/dist env -p || echo FAIL=true)
133 if [ "$FAIL" = true ]; then
139 if [ "$1" = "--dist-tool" ]; then
140 # Stop after building dist tool.
141 mkdir -p "$GOTOOLDIR"
142 if [ "$2" != "" ]; then
143 cp cmd/dist/dist "$2"
145 mv cmd/dist/dist "$GOTOOLDIR"/dist
150 if [ "$1" = "--no-clean" ]; then
154 ./cmd/dist/dist bootstrap $buildall $GO_DISTFLAGS -v # builds go_bootstrap
155 # Delay move of dist tool to now, because bootstrap may clear tool directory.
156 mv cmd/dist/dist "$GOTOOLDIR"/dist
159 if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then
160 echo "##### Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH."
161 # CC_FOR_TARGET is recorded as the default compiler for the go tool. When building for the host, however,
162 # use the host compiler, CC, from `cmd/dist/dist env` instead.
163 CC=$CC GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \
164 "$GOTOOLDIR"/go_bootstrap install -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd
168 echo "##### Building packages and commands for $GOOS/$GOARCH."
169 CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd
172 rm -f "$GOTOOLDIR"/go_bootstrap
174 if [ "$1" != "--no-banner" ]; then
175 "$GOTOOLDIR"/dist banner