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Text file src/make.rc

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     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	# 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	rfork e
    33	if(! test -f run.rc){
    34		echo 'make.rc must be run from $GOROOT/src' >[1=2]
    35		exit wrongdir
    36	}
    37	
    38	# Clean old generated file that will cause problems in the build.
    39	rm -f ./runtime/runtime_defs.go
    40	
    41	# Determine the host compiler toolchain.
    42	eval `{grep '^(CC|LD|O)=' /$objtype/mkfile}
    43	
    44	vflag=()
    45	if(~ $1 -v) {
    46		vflag=(-v)
    47		shift
    48	}
    49	
    50	GOFLAGS=()
    51	GOROOT = `{cd .. && pwd}
    52	if(! ~ $#GOROOT_BOOTSTRAP 1)
    53		GOROOT_BOOTSTRAP = $home/go1.4
    54	for(p in $path){
    55		if(! test -x $GOROOT_BOOTSTRAP/bin/go){
    56			if(go_exe = `{path=$p whatis go}){
    57				goroot = `{GOROOT='' $go_exe env GOROOT}
    58				if(! ~ $goroot $GOROOT){
    59					GOROOT_BOOTSTRAP = $goroot
    60				}
    61			}
    62		}
    63	}
    64	if(! test -x $GOROOT_BOOTSTRAP/bin/go){
    65		echo 'ERROR: Cannot find '$GOROOT_BOOTSTRAP'/bin/go.' >[1=2]
    66		echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.' >[1=2]
    67		exit bootstrap
    68	}
    69	if(~ $GOROOT_BOOTSTRAP $GOROOT){
    70		echo 'ERROR: $GOROOT_BOOTSTRAP must not be set to $GOROOT' >[1=2]
    71		echo 'Set $GOROOT_BOOTSTRAP to a working Go tree >= Go 1.4.' >[1=2]
    72		exit bootstrap
    73	}
    74	
    75	echo 'Building Go cmd/dist using '^$GOROOT_BOOTSTRAP
    76	if(~ $#vflag 1)
    77		echo cmd/dist
    78	GOROOT=$GOROOT_BOOTSTRAP GOOS='' GOARCH='' $GOROOT_BOOTSTRAP/bin/go build -o cmd/dist/dist ./cmd/dist
    79	
    80	eval `{./cmd/dist/dist env -9}
    81	if(~ $#vflag 1)
    82		echo
    83	
    84	if(~ $1 --dist-tool){
    85		# Stop after building dist tool.
    86		mkdir -p $GOTOOLDIR
    87		if(! ~ $2 '')
    88			cp cmd/dist/dist $2
    89		mv cmd/dist/dist $GOTOOLDIR/dist
    90		exit
    91	}
    92	
    93	buildall = -a
    94	if(~ $1 --no-clean) {
    95		buildall = ()
    96		shift
    97	}
    98	# Run dist bootstrap to complete make.bash.
    99	# Bootstrap installs a proper cmd/dist, built with the new toolchain.
   100	# Throw ours, built with Go 1.4, away after bootstrap.
   101	./cmd/dist/dist bootstrap $vflag $buildall $*
   102	rm -f ./cmd/dist/dist
   103	
   104	# DO NOT ADD ANY NEW CODE HERE.
   105	# The bootstrap+rm above are the final step of make.rc.
   106	# If something must be added, add it to cmd/dist's cmdbootstrap,
   107	# to avoid needing three copies in three different shell languages
   108	# (make.bash, make.bat, make.rc).

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