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).
122