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go/src/make.rc
Michael Pratt 34573aeb97 Revert "build: for default bootstrap, use Go 1.17 if present, falling back to Go 1.4"
This reverts https://golang.org/cl/369914.

Reason for revert: Breaking previously working toolchain builds.

For #44505.

Change-Id: I09ae20e50109a600d036358118077d27669df39c
Reviewed-on: https://go-review.googlesource.com/c/go/+/370138
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2021-12-08 01:17:33 +00:00

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#!/bin/rc -e
# Copyright 2012 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# See golang.org/s/go15bootstrap for an overview of the build process.
# Environment variables that control make.rc:
#
# GOROOT_FINAL: The expected final Go root, baked into binaries.
# The default is the location of the Go tree during the build.
#
# GOHOSTARCH: The architecture for host tools (compilers and
# binaries). Binaries of this type must be executable on the current
# system, so the only common reason to set this is to set
# GOHOSTARCH=386 on an amd64 machine.
#
# GOARCH: The target architecture for installed packages and tools.
#
# GOOS: The target operating system for installed packages and tools.
#
# GO_GCFLAGS: Additional go tool compile arguments to use when
# building the packages and commands.
#
# GO_LDFLAGS: Additional go tool link arguments to use when
# building the commands.
#
# CGO_ENABLED: Controls cgo usage during the build. Set it to 1
# to include all cgo related files, .c and .go file with "cgo"
# build directive, in the build. Set it to 0 to ignore them.
rfork e
if(! test -f run.rc){
echo 'make.rc must be run from $GOROOT/src' >[1=2]
exit wrongdir
}
# Clean old generated file that will cause problems in the build.
rm -f ./runtime/runtime_defs.go
# Determine the host compiler toolchain.
eval `{grep '^(CC|LD|O)=' /$objtype/mkfile}
vflag=()
if(~ $1 -v) {
vflag=(-v)
shift
}
GOENV=off
GOFLAGS=()
GO111MODULE=()
GOROOT = `{cd .. && pwd}
goroot_bootstrap_set = 'true'
if(! ~ $#GOROOT_BOOTSTRAP 1){
goroot_bootstrap_set = 'false'
GOROOT_BOOTSTRAP = $home/go1.4
}
for(p in $path){
if(! test -x $GOROOT_BOOTSTRAP/bin/go){
if(go_exe = `{path=$p whatis go}){
goroot = `{GOROOT='' $go_exe env GOROOT}
if(! ~ $goroot $GOROOT){
if(~ $goroot_bootstrap_set 'true'){
echo 'WARNING: '$GOROOT_BOOTSTRAP'/bin/go does not exist, found '$go_exe' from env' >[1=2]
echo 'WARNING: set '$goroot' as GOROOT_BOOTSTRAP' >[1=2]
}
GOROOT_BOOTSTRAP = $goroot
}
}
}
}
if(! test -x $GOROOT_BOOTSTRAP/bin/go){
echo 'ERROR: Cannot find '$GOROOT_BOOTSTRAP'/bin/go.' >[1=2]
echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.' >[1=2]
exit bootstrap
}
if(~ $GOROOT_BOOTSTRAP $GOROOT){
echo 'ERROR: $GOROOT_BOOTSTRAP must not be set to $GOROOT' >[1=2]
echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.' >[1=2]
exit bootstrap
}
echo 'Building Go cmd/dist using '^$GOROOT_BOOTSTRAP
if(~ $#vflag 1)
echo cmd/dist
GOROOT=$GOROOT_BOOTSTRAP GOOS='' GOARCH='' GO111MODULE=off $GOROOT_BOOTSTRAP/bin/go build -o cmd/dist/dist ./cmd/dist
eval `{./cmd/dist/dist env -9}
if(~ $#vflag 1)
echo
if(~ $1 --dist-tool){
# Stop after building dist tool.
mkdir -p $GOTOOLDIR
if(! ~ $2 '')
cp cmd/dist/dist $2
mv cmd/dist/dist $GOTOOLDIR/dist
exit
}
# Run dist bootstrap to complete make.bash.
# Bootstrap installs a proper cmd/dist, built with the new toolchain.
# Throw ours, built with Go 1.4, away after bootstrap.
./cmd/dist/dist bootstrap -a $vflag $*
rm -f ./cmd/dist/dist
# DO NOT ADD ANY NEW CODE HERE.
# The bootstrap+rm above are the final step of make.rc.
# If something must be added, add it to cmd/dist's cmdbootstrap,
# to avoid needing three copies in three different shell languages
# (make.bash, make.bat, make.rc).