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 # Environment variables that control make.bash:
8 # GOROOT_FINAL: The expected final Go root, baked into binaries.
9 # The default is the location of the Go tree during the build.
11 # GOHOSTARCH: The architecture for host tools (compilers and
12 # binaries). Binaries of this type must be executable on the current
13 # system, so the only common reason to set this is to set
14 # GOHOSTARCH=386 on an amd64 machine.
16 # GOARCH: The target architecture for installed packages and tools.
18 # GOOS: The target operating system for installed packages and tools.
20 # GO_GCFLAGS: Additional 5g/6g/8g arguments to use when
21 # building the packages and commands.
23 # GO_LDFLAGS: Additional 5l/6l/8l arguments to use when
24 # building the commands.
26 # GO_CCFLAGS: Additional 5c/6c/8c arguments to use when
29 # CGO_ENABLED: Controls cgo usage during the build. Set it to 1
30 # to include all cgo related files, .c and .go file with "cgo"
31 # build directive, in the build. Set it to 0 to ignore them.
33 # GO_EXTLINK_ENABLED: Set to 1 to invoke the host linker when building
34 # packages that use cgo. Set to 0 to do all linking internally. This
35 # controls the default behavior of the linker's -linkmode option. The
36 # default value depends on the system.
38 # CC: Command line to run to compile C code for GOHOSTARCH.
39 # Default is "gcc". Also supported: "clang".
41 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH.
42 # This is used by cgo. Default is CC.
44 # CXX_FOR_TARGET: Command line to run to compile C++ code for GOARCH.
45 # This is used by cgo. Default is CXX, or, if that is not set,
48 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". Use "-s"
49 # to build a statically linked toolchain.
52 if [ ! -f run.bash ]; then
53 echo 'make.bash must be run from $GOROOT/src' 1>&2
59 *MINGW* | *WIN32* | *CYGWIN*)
60 echo 'ERROR: Do not use make.bash to build on Windows.'
61 echo 'Use make.bat instead.'
68 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
69 echo 'ERROR: Your system has gold 2.20 installed.'
70 echo 'This version is shipped by Ubuntu even though'
71 echo 'it is known not to work on Ubuntu.'
72 echo 'Binaries built with this linker are likely to fail in mysterious ways.'
74 echo 'Run sudo apt-get remove binutils-gold.'
79 # Test for bad SELinux.
80 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
81 # so loop through the possible selinux mount points.
82 for se_mount in /selinux /sys/fs/selinux
84 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
85 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
86 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
87 echo "Go. You can enable the features that Go needs via the following "
88 echo "command (as root):"
89 echo " # setsebool -P allow_execstack 1"
91 echo "Note that this affects your system globally! "
93 echo "The build will continue in five seconds in case we "
94 echo "misdiagnosed the issue..."
101 # Test for debian/kFreeBSD.
102 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
103 # disable cgo manually.
104 if [ "$(uname -s)" == "GNU/kFreeBSD" ]; then
108 # Clean old generated file that will cause problems in the build.
109 rm -f ./runtime/runtime_defs.go
111 # Finally! Run the build.
113 echo '##### Building C bootstrap tool.'
115 export GOROOT="$(cd .. && pwd)"
116 GOROOT_FINAL="${GOROOT_FINAL:-$GOROOT}"
117 DEFGOROOT='-DGOROOT_FINAL="'"$GOROOT_FINAL"'"'
120 case "$GOHOSTARCH" in
124 if [ "$(uname)" == "Darwin" ]; then
125 # golang.org/issue/5261
126 mflag="$mflag -mmacosx-version-min=10.6"
128 # if gcc does not exist and $CC is not set, try clang if available.
129 if [ -z "$CC" -a -z "$(type -t gcc)" -a -n "$(type -t clang)" ]; then
130 export CC=clang CXX=clang++
132 ${CC:-gcc} $mflag -O2 -Wall -Werror -o cmd/dist/dist -Icmd/dist "$DEFGOROOT" cmd/dist/*.c
134 # -e doesn't propagate out of eval, so check success by hand.
135 eval $(./cmd/dist/dist env -p || echo FAIL=true)
136 if [ "$FAIL" = true ]; then
142 if [ "$1" = "--dist-tool" ]; then
143 # Stop after building dist tool.
144 mkdir -p "$GOTOOLDIR"
145 if [ "$2" != "" ]; then
146 cp cmd/dist/dist "$2"
148 mv cmd/dist/dist "$GOTOOLDIR"/dist
152 echo "##### Building compilers and Go bootstrap tool for host, $GOHOSTOS/$GOHOSTARCH."
154 if [ "$1" = "--no-clean" ]; then
158 ./cmd/dist/dist bootstrap $buildall $GO_DISTFLAGS -v # builds go_bootstrap
159 # Delay move of dist tool to now, because bootstrap may clear tool directory.
160 mv cmd/dist/dist "$GOTOOLDIR"/dist
161 "$GOTOOLDIR"/go_bootstrap clean -i std
164 if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then
165 echo "##### Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH."
166 # CC_FOR_TARGET is recorded as the default compiler for the go tool. When building for the host, however,
167 # use the host compiler, CC, from `cmd/dist/dist env` instead.
168 CC=$CC GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \
169 "$GOTOOLDIR"/go_bootstrap install -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std
173 echo "##### Building packages and commands for $GOOS/$GOARCH."
174 CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std
177 rm -f "$GOTOOLDIR"/go_bootstrap
179 if [ "$1" != "--no-banner" ]; then
180 "$GOTOOLDIR"/dist banner