github.com/x04/go/src@v0.0.0-20200202162449-3d481ceb3525/make.bash (about) 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 # GO_LDSO: Sets the default dynamic linker/loader (ld.so) to be used 38 # by the internal linker. 39 # 40 # CC: Command line to run to compile C code for GOHOSTARCH. 41 # Default is "gcc". Also supported: "clang". 42 # 43 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH. 44 # This is used by cgo. Default is CC. 45 # 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, 48 # "g++" or "clang++". 49 # 50 # FC: Command line to run to compile Fortran code for GOARCH. 51 # This is used by cgo. Default is "gfortran". 52 # 53 # PKG_CONFIG: Path to pkg-config tool. Default is "pkg-config". 54 # 55 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". 56 # (Or just pass them to the make.bash command line.) 57 # 58 # GOBUILDTIMELOGFILE: If set, make.bash and all.bash write 59 # timing information to this file. Useful for profiling where the 60 # time goes when these scripts run. 61 # 62 # GOROOT_BOOTSTRAP: A working Go tree >= Go 1.4 for bootstrap. 63 # If $GOROOT_BOOTSTRAP/bin/go is missing, $(go env GOROOT) is 64 # tried for all "go" in $PATH. $HOME/go1.4 by default. 65 66 set -e 67 68 export GOENV=off 69 unset GOBIN # Issue 14340 70 unset GOFLAGS 71 unset GO111MODULE 72 73 if [ ! -f run.bash ]; then 74 echo 'make.bash must be run from $GOROOT/src' 1>&2 75 exit 1 76 fi 77 78 if [ "$GOBUILDTIMELOGFILE" != "" ]; then 79 echo $(LC_TIME=C date) start make.bash >"$GOBUILDTIMELOGFILE" 80 fi 81 82 # Test for Windows. 83 case "$(uname)" in 84 *MINGW* | *WIN32* | *CYGWIN*) 85 echo 'ERROR: Do not use make.bash to build on Windows.' 86 echo 'Use make.bat instead.' 87 echo 88 exit 1 89 ;; 90 esac 91 92 # Test for bad ld. 93 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then 94 echo 'ERROR: Your system has gold 2.20 installed.' 95 echo 'This version is shipped by Ubuntu even though' 96 echo 'it is known not to work on Ubuntu.' 97 echo 'Binaries built with this linker are likely to fail in mysterious ways.' 98 echo 99 echo 'Run sudo apt-get remove binutils-gold.' 100 echo 101 exit 1 102 fi 103 104 # Test for bad SELinux. 105 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux, 106 # so loop through the possible selinux mount points. 107 for se_mount in /selinux /sys/fs/selinux 108 do 109 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then 110 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then 111 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks " 112 echo "Go. You can enable the features that Go needs via the following " 113 echo "command (as root):" 114 echo " # setsebool -P allow_execstack 1" 115 echo 116 echo "Note that this affects your system globally! " 117 echo 118 echo "The build will continue in five seconds in case we " 119 echo "misdiagnosed the issue..." 120 121 sleep 5 122 fi 123 fi 124 done 125 126 # Test for debian/kFreeBSD. 127 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to 128 # disable cgo manually. 129 if [ "$(uname -s)" = "GNU/kFreeBSD" ]; then 130 export CGO_ENABLED=0 131 fi 132 133 # On Alpine Linux, use the musl dynamic linker/loader 134 if [ -f "/etc/alpine-release" ]; then 135 if type readelf >/dev/null 2>&1; then 136 echo "int main() { return 0; }" | ${CC:-gcc} -o ./test-alpine-ldso -x c - 137 export GO_LDSO=$(readelf -l ./test-alpine-ldso | grep 'interpreter:' | sed -e 's/^.*interpreter: \(.*\)[]]/\1/') 138 rm -f ./test-alpine-ldso 139 fi 140 fi 141 142 # Clean old generated file that will cause problems in the build. 143 rm -f ./runtime/runtime_defs.go 144 145 # Finally! Run the build. 146 147 verbose=false 148 vflag="" 149 if [ "$1" = "-v" ]; then 150 verbose=true 151 vflag=-v 152 shift 153 fi 154 155 export GOROOT_BOOTSTRAP=${GOROOT_BOOTSTRAP:-$HOME/go1.4} 156 export GOROOT="$(cd .. && pwd)" 157 IFS=$'\n'; for go_exe in $(type -ap go); do 158 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then 159 goroot=$(GOROOT='' GOOS='' GOARCH='' "$go_exe" env GOROOT) 160 if [ "$goroot" != "$GOROOT" ]; then 161 GOROOT_BOOTSTRAP=$goroot 162 fi 163 fi 164 done; unset IFS 165 GOROOT_BOOTSTRAP_VERSION=$($GOROOT_BOOTSTRAP/bin/go version | sed 's/go version //') 166 echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)" 167 if $verbose; then 168 echo cmd/dist 169 fi 170 if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then 171 echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2 172 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2 173 exit 1 174 fi 175 if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then 176 echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2 177 echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2 178 exit 1 179 fi 180 rm -f cmd/dist/dist 181 GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" GO111MODULE=off "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist 182 183 # -e doesn't propagate out of eval, so check success by hand. 184 eval $(./cmd/dist/dist env -p || echo FAIL=true) 185 if [ "$FAIL" = true ]; then 186 exit 1 187 fi 188 189 if $verbose; then 190 echo 191 fi 192 193 if [ "$1" = "--dist-tool" ]; then 194 # Stop after building dist tool. 195 mkdir -p "$GOTOOLDIR" 196 if [ "$2" != "" ]; then 197 cp cmd/dist/dist "$2" 198 fi 199 mv cmd/dist/dist "$GOTOOLDIR"/dist 200 exit 0 201 fi 202 203 buildall="-a" 204 if [ "$1" = "--no-clean" ]; then 205 buildall="" 206 shift 207 fi 208 209 # Run dist bootstrap to complete make.bash. 210 # Bootstrap installs a proper cmd/dist, built with the new toolchain. 211 # Throw ours, built with Go 1.4, away after bootstrap. 212 ./cmd/dist/dist bootstrap $buildall $vflag $GO_DISTFLAGS "$@" 213 rm -f ./cmd/dist/dist 214 215 # DO NOT ADD ANY NEW CODE HERE. 216 # The bootstrap+rm above are the final step of make.bash. 217 # If something must be added, add it to cmd/dist's cmdbootstrap, 218 # to avoid needing three copies in three different shell languages 219 # (make.bash, make.bat, make.rc).