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 5g/6g/8g arguments to use when
23 # building the packages and commands.
25 # GO_LDFLAGS: Additional 5l/6l/8l arguments to use when
26 # building the commands.
28 # GO_CCFLAGS: Additional 5c/6c/8c arguments to use when
31 # CGO_ENABLED: Controls cgo usage during the build. Set it to 1
32 # to include all cgo related files, .c and .go file with "cgo"
33 # build directive, in the build. Set it to 0 to ignore them.
35 # GO_EXTLINK_ENABLED: Set to 1 to invoke the host linker when building
36 # packages that use cgo. Set to 0 to do all linking internally. This
37 # controls the default behavior of the linker's -linkmode option. The
38 # default value depends on the system.
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 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". Use "-s"
51 # to build a statically linked toolchain.
54 if [ ! -f run.bash ]; then
55 echo 'make.bash must be run from $GOROOT/src' 1>&2
61 *MINGW* | *WIN32* | *CYGWIN*)
62 echo 'ERROR: Do not use make.bash to build on Windows.'
63 echo 'Use make.bat instead.'
70 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
71 echo 'ERROR: Your system has gold 2.20 installed.'
72 echo 'This version is shipped by Ubuntu even though'
73 echo 'it is known not to work on Ubuntu.'
74 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
76 echo 'Run sudo apt-get remove binutils-gold.'
81 # Test for bad SELinux.
82 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
83 # so loop through the possible selinux mount points.
84 for se_mount in /selinux /sys/fs/selinux
86 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
87 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
88 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
89 echo "Go. You can enable the features that Go needs via the following "
90 echo "command (as root):"
91 echo " # setsebool -P allow_execstack 1"
93 echo "Note that this affects your system globally! "
95 echo "The build will continue in five seconds in case we "
96 echo "misdiagnosed the issue..."
103 # Test for debian/kFreeBSD.
104 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
105 # disable cgo manually.
106 if [ "$(uname -s)" == "GNU/kFreeBSD" ]; then
110 # Clean old generated file that will cause problems in the build.
111 rm -f ./runtime/runtime_defs.go
113 # Finally! Run the build.
115 echo '##### Building Go bootstrap tool.'
117 export GOROOT="$(cd .. && pwd)"
118 GOROOT_BOOTSTRAP=${GOROOT_BOOTSTRAP:-$HOME/go1.4}
119 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
120 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
121 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
124 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
126 # -e doesn't propagate out of eval, so check success by hand.
127 eval $(./cmd/dist/dist env -p || echo FAIL=true)
128 if [ "$FAIL" = true ]; then
134 if [ "$1" = "--dist-tool" ]; then
135 # Stop after building dist tool.
136 mkdir -p "$GOTOOLDIR"
137 if [ "$2" != "" ]; then
138 cp cmd/dist/dist "$2"
140 mv cmd/dist/dist "$GOTOOLDIR"/dist
144 echo "##### Building compilers and Go bootstrap tool for host, $GOHOSTOS/$GOHOSTARCH."
146 if [ "$1" = "--no-clean" ]; then
150 ./cmd/dist/dist bootstrap $buildall $GO_DISTFLAGS -v # builds go_bootstrap
151 # Delay move of dist tool to now, because bootstrap may clear tool directory.
152 mv cmd/dist/dist "$GOTOOLDIR"/dist
153 "$GOTOOLDIR"/go_bootstrap clean -i std
156 if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then
157 echo "##### Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH."
158 # CC_FOR_TARGET is recorded as the default compiler for the go tool. When building for the host, however,
159 # use the host compiler, CC, from `cmd/dist/dist env` instead.
160 CC=$CC GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \
161 "$GOTOOLDIR"/go_bootstrap install -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std
165 echo "##### Building packages and commands for $GOOS/$GOARCH."
166 CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std
169 rm -f "$GOTOOLDIR"/go_bootstrap
171 if [ "$1" != "--no-banner" ]; then
172 "$GOTOOLDIR"/dist banner