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Text file src/make.bash

Documentation: Index

     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=$goroot
   162  		fi
   163  	fi
   164  done; unset IFS
   165  if [ ! -x "$GOROOT_BOOTSTRAP/bin/go" ]; then
   166  	echo "ERROR: Cannot find $GOROOT_BOOTSTRAP/bin/go." >&2
   167  	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
   168  	exit 1
   169  fi
   170  # Get the exact bootstrap toolchain version to help with debugging.
   171  # We clear GOOS and GOARCH to avoid an ominous but harmless warning if
   172  # the bootstrap doesn't support them.
   173  GOROOT_BOOTSTRAP_VERSION=$(GOOS= GOARCH= $GOROOT_BOOTSTRAP/bin/go version | sed 's/go version //')
   174  echo "Building Go cmd/dist using $GOROOT_BOOTSTRAP. ($GOROOT_BOOTSTRAP_VERSION)"
   175  if $verbose; then
   176  	echo cmd/dist
   177  fi
   178  if [ "$GOROOT_BOOTSTRAP" = "$GOROOT" ]; then
   179  	echo "ERROR: \$GOROOT_BOOTSTRAP must not be set to \$GOROOT" >&2
   180  	echo "Set \$GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4." >&2
   181  	exit 1
   182  fi
   183  rm -f cmd/dist/dist
   184  GOROOT="$GOROOT_BOOTSTRAP" GOOS="" GOARCH="" GO111MODULE=off "$GOROOT_BOOTSTRAP/bin/go" build -o cmd/dist/dist ./cmd/dist
   185  
   186  # -e doesn't propagate out of eval, so check success by hand.
   187  eval $(./cmd/dist/dist env -p || echo FAIL=true)
   188  if [ "$FAIL" = true ]; then
   189  	exit 1
   190  fi
   191  
   192  if $verbose; then
   193  	echo
   194  fi
   195  
   196  if [ "$1" = "--dist-tool" ]; then
   197  	# Stop after building dist tool.
   198  	mkdir -p "$GOTOOLDIR"
   199  	if [ "$2" != "" ]; then
   200  		cp cmd/dist/dist "$2"
   201  	fi
   202  	mv cmd/dist/dist "$GOTOOLDIR"/dist
   203  	exit 0
   204  fi
   205  
   206  buildall="-a"
   207  if [ "$1" = "--no-clean" ]; then
   208  	buildall=""
   209  	shift
   210  fi
   211  
   212  # Run dist bootstrap to complete make.bash.
   213  # Bootstrap installs a proper cmd/dist, built with the new toolchain.
   214  # Throw ours, built with Go 1.4, away after bootstrap.
   215  ./cmd/dist/dist bootstrap $buildall $vflag $GO_DISTFLAGS "$@"
   216  rm -f ./cmd/dist/dist
   217  
   218  # DO NOT ADD ANY NEW CODE HERE.
   219  # The bootstrap+rm above are the final step of make.bash.
   220  # If something must be added, add it to cmd/dist's cmdbootstrap,
   221  # to avoid needing three copies in three different shell languages
   222  # (make.bash, make.bat, make.rc).
   223  

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