github.com/hongwozai/go-src-1.4.3@v0.0.0-20191127132709-dc3fce3dbccb/src/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 # Environment variables that control make.bash: 7 # 8 # GOROOT_FINAL: The expected final Go root, baked into binaries. 9 # The default is the location of the Go tree during the build. 10 # 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. 15 # 16 # GOARCH: The target architecture for installed packages and tools. 17 # 18 # GOOS: The target operating system for installed packages and tools. 19 # 20 # GO_GCFLAGS: Additional 5g/6g/8g arguments to use when 21 # building the packages and commands. 22 # 23 # GO_LDFLAGS: Additional 5l/6l/8l arguments to use when 24 # building the commands. 25 # 26 # GO_CCFLAGS: Additional 5c/6c/8c arguments to use when 27 # building. 28 # 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. 32 # 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. 37 # 38 # CC: Command line to run to compile C code for GOHOSTARCH. 39 # Default is "gcc". Also supported: "clang". 40 # 41 # CC_FOR_TARGET: Command line to run to compile C code for GOARCH. 42 # This is used by cgo. Default is CC. 43 # 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, 46 # "g++" or "clang++". 47 # 48 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". Use "-s" 49 # to build a statically linked toolchain. 50 51 make -C cmd/gc y.tab.h 52 53 set -e 54 if [ ! -f run.bash ]; then 55 echo 'make.bash must be run from $GOROOT/src' 1>&2 56 exit 1 57 fi 58 59 # Test for Windows. 60 case "$(uname)" in 61 *MINGW* | *WIN32* | *CYGWIN*) 62 echo 'ERROR: Do not use make.bash to build on Windows.' 63 echo 'Use make.bat instead.' 64 echo 65 exit 1 66 ;; 67 esac 68 69 # Test for bad ld. 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.' 75 echo 76 echo 'Run sudo apt-get remove binutils-gold.' 77 echo 78 exit 1 79 fi 80 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 85 do 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" 92 echo 93 echo "Note that this affects your system globally! " 94 echo 95 echo "The build will continue in five seconds in case we " 96 echo "misdiagnosed the issue..." 97 98 sleep 5 99 fi 100 fi 101 done 102 103 # 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 107 export CGO_ENABLED=0 108 fi 109 110 # Clean old generated file that will cause problems in the build. 111 rm -f ./runtime/runtime_defs.go 112 113 # Finally! Run the build. 114 115 echo '# Building C bootstrap tool.' 116 echo cmd/dist 117 export GOROOT="$(cd .. && pwd)" 118 GOROOT_FINAL="${GOROOT_FINAL:-$GOROOT}" 119 DEFGOROOT='-DGOROOT_FINAL="'"$GOROOT_FINAL"'"' 120 121 mflag="" 122 case "$GOHOSTARCH" in 123 386) mflag=-m32;; 124 amd64) mflag=-m64;; 125 esac 126 if [ "$(uname)" == "Darwin" ]; then 127 # golang.org/issue/5261 128 mflag="$mflag -mmacosx-version-min=10.6" 129 fi 130 # if gcc does not exist and $CC is not set, try clang if available. 131 if [ -z "$CC" -a -z "$(type -t gcc)" -a -n "$(type -t clang)" ]; then 132 export CC=clang CXX=clang++ 133 fi 134 ${CC:-gcc} $mflag -O2 -Wall -Werror -o cmd/dist/dist -Icmd/dist "$DEFGOROOT" cmd/dist/*.c 135 136 # -e doesn't propagate out of eval, so check success by hand. 137 eval $(./cmd/dist/dist env -p || echo FAIL=true) 138 if [ "$FAIL" = true ]; then 139 exit 1 140 fi 141 142 echo 143 144 if [ "$1" = "--dist-tool" ]; then 145 # Stop after building dist tool. 146 mkdir -p "$GOTOOLDIR" 147 if [ "$2" != "" ]; then 148 cp cmd/dist/dist "$2" 149 fi 150 mv cmd/dist/dist "$GOTOOLDIR"/dist 151 exit 0 152 fi 153 154 echo "# Building compilers and Go bootstrap tool for host, $GOHOSTOS/$GOHOSTARCH." 155 buildall="-a" 156 if [ "$1" = "--no-clean" ]; then 157 buildall="" 158 shift 159 fi 160 ./cmd/dist/dist bootstrap $buildall $GO_DISTFLAGS -v # builds go_bootstrap 161 # Delay move of dist tool to now, because bootstrap may clear tool directory. 162 mv cmd/dist/dist "$GOTOOLDIR"/dist 163 "$GOTOOLDIR"/go_bootstrap clean -i std 164 echo 165 166 if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then 167 echo "# Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH." 168 # CC_FOR_TARGET is recorded as the default compiler for the go tool. When building for the host, however, 169 # use the host compiler, CC, from `cmd/dist/dist env` instead. 170 CC=$CC GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \ 171 "$GOTOOLDIR"/go_bootstrap install -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std 172 echo 173 fi 174 175 echo "# Building packages and commands for $GOOS/$GOARCH." 176 CC=$CC_FOR_TARGET "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std 177 echo 178 179 rm -f "$GOTOOLDIR"/go_bootstrap 180 181 if [ "$1" != "--no-banner" ]; then 182 "$GOTOOLDIR"/dist banner 183 fi