github.com/rohankumardubey/syslog-redirector-golang@v0.0.0-20140320174030-4859f03d829a/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 get at host C compiler. 39 # Default is "gcc". Also supported: "clang". 40 # CXX: Command line to run to get at host C++ compiler, only recorded 41 # for cgo use. Default is "g++". Also supported: "clang++". 42 # 43 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap". Use "-s" 44 # to build a statically linked toolchain. 45 46 set -e 47 if [ ! -f run.bash ]; then 48 echo 'make.bash must be run from $GOROOT/src' 1>&2 49 exit 1 50 fi 51 52 # Test for Windows. 53 case "$(uname)" in 54 *MINGW* | *WIN32* | *CYGWIN*) 55 echo 'ERROR: Do not use make.bash to build on Windows.' 56 echo 'Use make.bat instead.' 57 echo 58 exit 1 59 ;; 60 esac 61 62 # Test for bad ld. 63 if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then 64 echo 'ERROR: Your system has gold 2.20 installed.' 65 echo 'This version is shipped by Ubuntu even though' 66 echo 'it is known not to work on Ubuntu.' 67 echo 'Binaries built with this linker are likely to fail in mysterious ways.' 68 echo 69 echo 'Run sudo apt-get remove binutils-gold.' 70 echo 71 exit 1 72 fi 73 74 # Test for bad SELinux. 75 # On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux, 76 # so loop through the possible selinux mount points. 77 for se_mount in /selinux /sys/fs/selinux 78 do 79 if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then 80 if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then 81 echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks " 82 echo "Go. You can enable the features that Go needs via the following " 83 echo "command (as root):" 84 echo " # setsebool -P allow_execstack 1" 85 echo 86 echo "Note that this affects your system globally! " 87 echo 88 echo "The build will continue in five seconds in case we " 89 echo "misdiagnosed the issue..." 90 91 sleep 5 92 fi 93 fi 94 done 95 96 # Test for debian/kFreeBSD. 97 # cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to 98 # disable cgo manually. 99 if [ "$(uname -s)" == "GNU/kFreeBSD" ]; then 100 export CGO_ENABLED=0 101 fi 102 103 # Clean old generated file that will cause problems in the build. 104 rm -f ./pkg/runtime/runtime_defs.go 105 106 # Finally! Run the build. 107 108 echo '# Building C bootstrap tool.' 109 echo cmd/dist 110 export GOROOT="$(cd .. && pwd)" 111 GOROOT_FINAL="${GOROOT_FINAL:-$GOROOT}" 112 DEFGOROOT='-DGOROOT_FINAL="'"$GOROOT_FINAL"'"' 113 114 mflag="" 115 case "$GOHOSTARCH" in 116 386) mflag=-m32;; 117 amd64) mflag=-m64;; 118 esac 119 if [ "$(uname)" == "Darwin" ]; then 120 # golang.org/issue/5261 121 mflag="$mflag -mmacosx-version-min=10.6" 122 fi 123 ${CC:-gcc} $mflag -O2 -Wall -Werror -o cmd/dist/dist -Icmd/dist "$DEFGOROOT" cmd/dist/*.c 124 125 # -e doesn't propagate out of eval, so check success by hand. 126 eval $(./cmd/dist/dist env -p || echo FAIL=true) 127 if [ "$FAIL" = true ]; then 128 exit 1 129 fi 130 131 echo 132 133 if [ "$1" = "--dist-tool" ]; then 134 # Stop after building dist tool. 135 mkdir -p "$GOTOOLDIR" 136 if [ "$2" != "" ]; then 137 cp cmd/dist/dist "$2" 138 fi 139 mv cmd/dist/dist "$GOTOOLDIR"/dist 140 exit 0 141 fi 142 143 echo "# Building compilers and Go bootstrap tool for host, $GOHOSTOS/$GOHOSTARCH." 144 buildall="-a" 145 if [ "$1" = "--no-clean" ]; then 146 buildall="" 147 fi 148 ./cmd/dist/dist bootstrap $buildall $GO_DISTFLAGS -v # builds go_bootstrap 149 # Delay move of dist tool to now, because bootstrap may clear tool directory. 150 mv cmd/dist/dist "$GOTOOLDIR"/dist 151 "$GOTOOLDIR"/go_bootstrap clean -i std 152 echo 153 154 if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then 155 echo "# Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH." 156 GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \ 157 "$GOTOOLDIR"/go_bootstrap install -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std 158 echo 159 fi 160 161 echo "# Building packages and commands for $GOOS/$GOARCH." 162 "$GOTOOLDIR"/go_bootstrap install $GO_FLAGS -ccflags "$GO_CCFLAGS" -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std 163 echo 164 165 rm -f "$GOTOOLDIR"/go_bootstrap 166 167 if [ "$1" != "--no-banner" ]; then 168 "$GOTOOLDIR"/dist banner 169 fi