Text file src/make.rc

Documentation: Index

     1#!/bin/rc -e
     2# Copyright 2012 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.rc:
     9#
    10# GOHOSTARCH: The architecture for host tools (compilers and
    11# binaries).  Binaries of this type must be executable on the current
    12# system, so the only common reason to set this is to set
    13# GOHOSTARCH=386 on an amd64 machine.
    14#
    15# GOARCH: The target architecture for installed packages and tools.
    16#
    17# GOOS: The target operating system for installed packages and tools.
    18#
    19# GO_GCFLAGS: Additional go tool compile arguments to use when
    20# building the packages and commands.
    21#
    22# GO_LDFLAGS: Additional go tool link arguments to use when
    23# building the commands.
    24#
    25# CGO_ENABLED: Controls cgo usage during the build. Set it to 1
    26# to include all cgo related files, .c and .go file with "cgo"
    27# build directive, in the build. Set it to 0 to ignore them.
    28
    29rfork e
    30if(! test -f run.rc){
    31	echo 'make.rc must be run from $GOROOT/src' >[1=2]
    32	exit wrongdir
    33}
    34
    35# Clean old generated file that will cause problems in the build.
    36rm -f ./runtime/runtime_defs.go
    37
    38# Determine the host compiler toolchain.
    39eval `{grep '^(CC|LD|O)=' /$objtype/mkfile}
    40
    41vflag=()
    42if(~ $1 -v) {
    43	vflag=(-v)
    44	shift
    45}
    46
    47fn bootstrapenv {
    48	GOROOT=$GOROOT_BOOTSTRAP GO111MODULE=off GOENV=off GOOS=() GOARCH=() GOEXPERIMENT=() GOFLAGS=() $*
    49}
    50
    51bootgo = 1.20.6
    52GOROOT = `{cd .. && pwd}
    53goroot_bootstrap_set = 'true'
    54if(! ~ $#GOROOT_BOOTSTRAP 1){
    55	goroot_bootstrap_set = 'false'
    56	GOROOT_BOOTSTRAP = $home/go1.4
    57	for(d in sdk/go$bootgo go$bootgo)
    58		if(test -d $home/$d)
    59			GOROOT_BOOTSTRAP = $home/$d
    60}
    61for(p in $path){
    62	if(! test -x $GOROOT_BOOTSTRAP/bin/go){
    63		if(go_exe = `{path=$p whatis go}){
    64			goroot_bootstrap = $GOROOT_BOOTSTRAP
    65			GOROOT_BOOTSTRAP = ()
    66			goroot = `{bootstrapenv $go_exe env GOROOT}
    67			GOROOT_BOOTSTRAP = $goroot_bootstrap
    68			if(! ~ $goroot $GOROOT){
    69				if(~ $goroot_bootstrap_set 'true'){
    70					echo 'WARNING: '$GOROOT_BOOTSTRAP'/bin/go does not exist, found '$go_exe' from env' >[1=2]
    71					echo 'WARNING: set '$goroot' as GOROOT_BOOTSTRAP' >[1=2]
    72				}
    73				GOROOT_BOOTSTRAP = $goroot
    74			}
    75		}
    76	}
    77}
    78if(! test -x $GOROOT_BOOTSTRAP/bin/go){
    79	echo 'ERROR: Cannot find '$GOROOT_BOOTSTRAP'/bin/go.' >[1=2]
    80	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go '$bootgo'.' >[1=2]
    81	exit bootstrap
    82}
    83if(~ $GOROOT_BOOTSTRAP $GOROOT){
    84	echo 'ERROR: $GOROOT_BOOTSTRAP must not be set to $GOROOT' >[1=2]
    85	echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go '$bootgo'.' >[1=2]
    86	exit bootstrap
    87}
    88
    89# Get the exact bootstrap toolchain version to help with debugging.
    90# We clear GOOS and GOARCH to avoid an ominous but harmless warning if
    91# the bootstrap doesn't support them.
    92GOROOT_BOOTSTRAP_VERSION=`{bootstrapenv $GOROOT_BOOTSTRAP/bin/go version | sed 's/go version //'}
    93echo 'Building Go cmd/dist using '$GOROOT_BOOTSTRAP'. ('$"GOROOT_BOOTSTRAP_VERSION')'
    94if(~ $#vflag 1)
    95	echo cmd/dist
    96bootstrapenv $GOROOT_BOOTSTRAP/bin/go build -o cmd/dist/dist ./cmd/dist
    97
    98eval `{./cmd/dist/dist env -9}
    99if(~ $#vflag 1)
   100	echo
   101
   102if(~ $1 --dist-tool){
   103	# Stop after building dist tool.
   104	mkdir -p $GOTOOLDIR
   105	if(! ~ $2 '')
   106		cp cmd/dist/dist $2
   107	mv cmd/dist/dist $GOTOOLDIR/dist
   108	exit
   109}
   110
   111# Run dist bootstrap to complete make.bash.
   112# Bootstrap installs a proper cmd/dist, built with the new toolchain.
   113# Throw ours, built with the bootstrap toolchain, away after bootstrap.
   114./cmd/dist/dist bootstrap -a $vflag $*
   115rm -f ./cmd/dist/dist
   116
   117# DO NOT ADD ANY NEW CODE HERE.
   118# The bootstrap+rm above are the final step of make.rc.
   119# If something must be added, add it to cmd/dist's cmdbootstrap,
   120# to avoid needing three copies in three different shell languages
   121# (make.bash, make.bat, make.rc).

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