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 # FC: Command line to run to compile Fortran code for GOARCH. 48 # This is used by cgo. Default is "gfortran". 49 # 50 # PKG_CONFIG: Path to pkg-config tool. Default is "pkg-config". 51 # 52 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". 53 # (Or just pass them to the make.bash command line.) 54 # 55 # GOBUILDTIMELOGFILE: If set, make.bash and all.bash write 56 # timing information to this file. Useful for profiling where the 57 # time goes when these scripts run. 58 # 59 # GOROOT_BOOTSTRAP: A working Go tree >= Go 1.4 for bootstrap. 60 # If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is 61 # tried for all "go" in $PATH. $HOME/go1.4 by default. 62 63 set -e 64 65 unset GOBIN # Issue 14340 66 67 if [ ! -f run.bash ]; then 68 echo 'make.bash must be run from $GOROOT/src' 1>&2 69 exit 1 70 fi 71 72 if [ "$GOBUILDTIMELOGFILE" != "" ]; then 73 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE" 74 fi 75 76 # Test for Windows. 77 case "$(uname)" in 78 *MINGW* | *WIN32* | *CYGWIN*) 79 echo 'ERROR: Do not use make.bash to build on Windows.' 80 echo 'Use make.bat instead.' 81 echo 82 exit 1 83 ;; 84 esac 85 86 # Test for bad ld. 87 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then 88 echo 'ERROR: Your system has gold 2.20 installed.' 89 echo 'This version is shipped by Ubuntu even though' 90 echo 'it is known not to work on Ubuntu.' 91 echo 'Binaries built with this linker are likely to fail in mysterious ways.' 92 echo 93 echo 'Run sudo apt-get remove binutils-gold.' 94 echo 95 exit 1 96 fi 97 98 # Test for bad SELinux. 99 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux, 100 # so loop through the possible selinux mount points. 101 for se_mount in /selinux /sys/fs/selinux 102 do 103 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then 104 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then 105 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks " 106 echo "Go. You can enable the features that Go needs via the following " 107 echo "command (as root):" 108 echo " # setsebool -P allow_execstack 1" 109 echo 110 echo "Note that this affects your system globally! " 111 echo 112 echo "The build will continue in five seconds in case we " 113 echo "misdiagnosed the issue..." 114 115 sleep 5 116 fi 117 fi 118 done 119 120 # Test for debian/kFreeBSD. 121 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to 122 # disable cgo manually. 123 if [ "$(uname -s)" = "GNU/kFreeBSD" ]; then 124 export CGO_ENABLED=0 125 fi 126 127 # Clean old generated file that will cause problems in the build. 128 rm -f ./runtime/runtime_defs.go 129 130 # Finally! Run the build. 131 132 verbose=false 133 vflag="" 134 if [ "$1" = "-v" ]; then 135 verbose=true 136 vflag=-v 137 shift 138 fi 139 140 export GOROOT_BOOTSTRAP=${GOROOT_BOOTSTRAP:-$HOME/go1.4} 141 export GOROOT="$(cd .. && pwd)" 142 IFS=$'\n'; for go_exe in $(type -ap go); do 143 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then 144 goroot=$(GOROOT='' "$go_exe" env GOROOT) 145 if [ "$goroot" != "$GOROOT" ]; then 146 GOROOT_BOOTSTRAP=$goroot 147 fi 148 fi 149 done; unset IFS 150 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP." 151 if $verbose; then 152 echo cmd/dist 153 fi 154 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then 155 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2 156 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2 157 exit 1 158 fi 159 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then 160 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2 161 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2 162 exit 1 163 fi 164 rm -f cmd/dist/dist 165 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist 166 167 # -e doesn't propagate out of eval, so check success by hand. 168 eval $(./cmd/dist/dist env -p || echo FAIL=true) 169 if [ "$FAIL" = true ]; then 170 exit 1 171 fi 172 173 if $verbose; then 174 echo 175 fi 176 177 if [ "$1" = "--dist-tool" ]; then 178 # Stop after building dist tool. 179 mkdir -p "$GOTOOLDIR" 180 if [ "$2" != "" ]; then 181 cp cmd/dist/dist "$2" 182 fi 183 mv cmd/dist/dist "$GOTOOLDIR"/dist 184 exit 0 185 fi 186 187 buildall="-a" 188 if [ "$1" = "--no-clean" ]; then 189 buildall="" 190 shift 191 fi 192 193 # Run dist bootstrap to complete make.bash. 194 # Bootstrap installs a proper cmd/dist, built with the new toolchain. 195 # Throw ours, built with Go 1.4, away after bootstrap. 196 ./cmd/dist/dist bootstrap $buildall $vflag $GO_DISTFLAGS "$@" 197 rm -f ./cmd/dist/dist 198 199 # DO NOT ADD ANY NEW CODE HERE. 200 # The bootstrap+rm above are the final step of make.bash. 201 # If something must be added, add it to cmd/dist's cmdbootstrap, 202 # to avoid needing three copies in three different shell languages 203 # (make.bash, make.bat, make.rc). 204
