1 #!/usr/bin/env bash 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. 5 6 # See golang.org/s/go15bootstrap for an overview of the build process. 7 8 # Environment variables that control make.bash: 9 # 10 # GOROOT_FINAL: The expected final Go root, baked into binaries. 11 # The default is the location of the Go tree during the build. 12 # 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. 17 # 18 # GOARCH: The target architecture for installed packages and tools. 19 # 20 # GOOS: The target operating system for installed packages and tools. 21 # 22 # GO_GCFLAGS: Additional go tool compile arguments to use when 23 # building the packages and commands. 24 # 25 # GO_LDFLAGS: Additional go tool link arguments to use when 26 # building the commands. 27 # 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. 31 # 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. 36 # 37 # CC: Command line to run to compile C code for GOHOSTARCH. 38 # Default is "gcc". Also supported: "clang". 39 # 40 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH. 41 # This is used by cgo. Default is CC. 42 # 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, 45 # "g++" or "clang++". 46 # 47 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". Use "-s" 48 # to build a statically linked toolchain. 49 50 set -e 51 if [ ! -f run.bash ]; then 52 echo 'make.bash must be run from $GOROOT/src' 1>&2 53 exit 1 54 fi 55 56 # Test for Windows. 57 case "$(uname)" in 58 *MINGW* | *WIN32* | *CYGWIN*) 59 echo 'ERROR: Do not use make.bash to build on Windows.' 60 echo 'Use make.bat instead.' 61 echo 62 exit 1 63 ;; 64 esac 65 66 # Test for bad ld. 67 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then 68 echo 'ERROR: Your system has gold 2.20 installed.' 69 echo 'This version is shipped by Ubuntu even though' 70 echo 'it is known not to work on Ubuntu.' 71 echo 'Binaries built with this linker are likely to fail in mysterious ways.' 72 echo 73 echo 'Run sudo apt-get remove binutils-gold.' 74 echo 75 exit 1 76 fi 77 78 # Test for bad SELinux. 79 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux, 80 # so loop through the possible selinux mount points. 81 for se_mount in /selinux /sys/fs/selinux 82 do 83 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then 84 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then 85 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks " 86 echo "Go. You can enable the features that Go needs via the following " 87 echo "command (as root):" 88 echo " # setsebool -P allow_execstack 1" 89 echo 90 echo "Note that this affects your system globally! " 91 echo 92 echo "The build will continue in five seconds in case we " 93 echo "misdiagnosed the issue..." 94 95 sleep 5 96 fi 97 fi 98 done 99 100 # Test for debian/kFreeBSD. 101 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to 102 # disable cgo manually. 103 if [ "$(uname -s)" == "GNU/kFreeBSD" ]; then 104 export CGO_ENABLED=0 105 fi 106 107 # Clean old generated file that will cause problems in the build. 108 rm -f ./runtime/runtime_defs.go 109 110 # Finally! Run the build. 111 112 echo '##### Building Go bootstrap tool.' 113 echo cmd/dist 114 export GOROOT="$(cd .. && pwd)" 115 GOROOT_BOOTSTRAP=${GOROOT_BOOTSTRAP:-$HOME/go1.4} 116 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then 117 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2 118 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2 119 fi 120 rm -f cmd/dist/dist 121 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist 122 123 # -e doesn't propagate out of eval, so check success by hand. 124 eval $(./cmd/dist/dist env -p || echo FAIL=true) 125 if [ "$FAIL" = true ]; then 126 exit 1 127 fi 128 129 echo 130 131 if [ "$1" = "--dist-tool" ]; then 132 # Stop after building dist tool. 133 mkdir -p "$GOTOOLDIR" 134 if [ "$2" != "" ]; then 135 cp cmd/dist/dist "$2" 136 fi 137 mv cmd/dist/dist "$GOTOOLDIR"/dist 138 exit 0 139 fi 140 141 buildall="-a" 142 if [ "$1" = "--no-clean" ]; then 143 buildall="" 144 shift 145 fi 146 ./cmd/dist/dist bootstrap $buildall $GO_DISTFLAGS -v # builds go_bootstrap 147 # Delay move of dist tool to now, because bootstrap may clear tool directory. 148 mv cmd/dist/dist "$GOTOOLDIR"/dist 149 echo 150 151 if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then 152 echo "##### Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH." 153 # CC_FOR_TARGET is recorded as the default compiler for the go tool. When building for the host, however, 154 # use the host compiler, CC, from `cmd/dist/dist env` instead. 155 CC=$CC GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \ 156 "$GOTOOLDIR"/go_bootstrap install -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd 157 echo 158 fi 159 160 echo "##### Building packages and commands for $GOOS/$GOARCH." 161 CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std cmd 162 echo 163 164 rm -f "$GOTOOLDIR"/go_bootstrap 165 166 if [ "$1" != "--no-banner" ]; then 167 "$GOTOOLDIR"/dist banner 168 fi 169
