github.com/likebike/go--@v0.0.0-20190911215757-0bd925d16e96/go/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  # 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).