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#!/usr/bin/env bash
# Copyright 2009 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.
# Environment variables that control make.bash:
#
# 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 5g/6g/8g arguments to use when
# building the packages and commands.
#
# GO_LDFLAGS: Additional 5l/6l/8l 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.
set -e
if [ ! -f run.bash ]; then
echo 'make.bash must be run from $GOROOT/src' 1>&2
exit 1
fi
# Test for Windows.
case "$(uname)" in
*MINGW* | *WIN32* | *CYGWIN*)
echo 'ERROR: Do not use make.bash to build on Windows.'
echo 'Use make.bat instead.'
echo
exit 1
;;
esac
# Test for bad ld.
if ld --version 2>&1 | grep 'gold.* 2\.20' >/dev/null; then
echo 'ERROR: Your system has gold 2.20 installed.'
echo 'This version is shipped by Ubuntu even though'
echo 'it is known not to work on Ubuntu.'
echo 'Binaries built with this linker are likely to fail in mysterious ways.'
echo
echo 'Run sudo apt-get remove binutils-gold.'
echo
exit 1
fi
# Test for bad SELinux.
# On Fedora 16 the selinux filesystem is mounted at /sys/fs/selinux,
# so loop through the possible selinux mount points.
for se_mount in /selinux /sys/fs/selinux
do
if [ -d $se_mount -a -f $se_mount/booleans/allow_execstack -a -x /usr/sbin/selinuxenabled ] && /usr/sbin/selinuxenabled; then
if ! cat $se_mount/booleans/allow_execstack | grep -c '^1 1$' >> /dev/null ; then
echo "WARNING: the default SELinux policy on, at least, Fedora 12 breaks "
echo "Go. You can enable the features that Go needs via the following "
echo "command (as root):"
echo " # setsebool -P allow_execstack 1"
echo
echo "Note that this affects your system globally! "
echo
echo "The build will continue in five seconds in case we "
echo "misdiagnosed the issue..."
sleep 5
fi
fi
done
# Test for debian/kFreeBSD.
# cmd/dist will detect kFreeBSD as freebsd/$GOARCH, but we need to
# disable cgo manually.
if [ "$(uname -s)" == "GNU/kFreeBSD" ]; then
export CGO_ENABLED=0
fi
# Clean old generated file that will cause problems in the build.
rm -f ./pkg/runtime/runtime_defs.go
# Finally! Run the build.
echo '# Building C bootstrap tool.'
echo cmd/dist
export GOROOT="$(cd .. && pwd)"
GOROOT_FINAL="${GOROOT_FINAL:-$GOROOT}"
DEFGOROOT='-DGOROOT_FINAL="'"$GOROOT_FINAL"'"'
mflag=""
case "$GOHOSTARCH" in
386) mflag=-m32;;
amd64) mflag=-m64;;
esac
gcc $mflag -O2 -Wall -Werror -ggdb -o cmd/dist/dist -Icmd/dist "$DEFGOROOT" cmd/dist/*.c
eval $(./cmd/dist/dist env -p)
echo
if [ "$1" = "--dist-tool" ]; then
# Stop after building dist tool.
mkdir -p "$GOTOOLDIR"
if [ "$2" != "" ]; then
cp cmd/dist/dist "$2"
fi
mv cmd/dist/dist "$GOTOOLDIR"/dist
exit 0
fi
echo "# Building compilers and Go bootstrap tool for host, $GOHOSTOS/$GOHOSTARCH."
buildall="-a"
if [ "$1" = "--no-clean" ]; then
buildall=""
fi
./cmd/dist/dist bootstrap $buildall -v # builds go_bootstrap
# Delay move of dist tool to now, because bootstrap may clear tool directory.
mv cmd/dist/dist "$GOTOOLDIR"/dist
"$GOTOOLDIR"/go_bootstrap clean -i std
echo
if [ "$GOHOSTARCH" != "$GOARCH" -o "$GOHOSTOS" != "$GOOS" ]; then
echo "# Building packages and commands for host, $GOHOSTOS/$GOHOSTARCH."
GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \
"$GOTOOLDIR"/go_bootstrap install -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std
echo
fi
echo "# Building packages and commands for $GOOS/$GOARCH."
"$GOTOOLDIR"/go_bootstrap install -gcflags "$GO_GCFLAGS" -ldflags "$GO_LDFLAGS" -v std
echo
rm -f "$GOTOOLDIR"/go_bootstrap
if [ "$1" != "--no-banner" ]; then
"$GOTOOLDIR"/dist banner
fi
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