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#!/bin/sh

# Slackware build script for google-go-lang

# Written by Eric Schultz eric at schultzter.ca
# Taken over by Vincent Batts vbatts@hashbangbash.com

# Copyright (c) 2012, 2013  Vincent Batts
# Copyright (c) 2012 Eric Schultz
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

PRGNAM=google-go-lang
VERSION=${VERSION:-1.3.2}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

RELEASE=${RELEASE:-linux}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ "$ARCH" = "i486" ]; then
  LIBDIRSUFFIX=""
  GARCH="386"
elif [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
  GARCH="amd64"
elif [ "$ARCH" = "arm" ]; then
  LIBDIRSUFFIX=""
  GARCH="arm"
  export GOARM="6" # can be '5' as well, to use soft float instead of hardware
else
  LIBDIRSUFFIX=""
  GARCH=386
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG/usr/lib${LIBDIRSUFFIX} $OUTPUT
cd $PKG/usr/lib${LIBDIRSUFFIX}
tar xvf $CWD/go$VERSION.src.tar.gz
cd go
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
 -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
 -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

cat $CWD/runtime-test-capture.patch | patch -p1 || exit 1

export GOSRC="$(pwd)"
export GOROOT="$(pwd)"
export GOROOT_FINAL="/usr/lib${LIBDIRSUFFIX}/go"
export GOOS="linux"
export GOBIN="${PKG}/usr/bin"
export GOARCH="${GARCH}"

unset BASH_ENV # Not sure why, but this causes run.bash to fail --rworkman

mkdir -p "${GOBIN}"
cd src

LC_ALL=C \
./all.bash

cd ..

install -Dm644 misc/bash/go $PKG/etc/bash_completion.d/go

install -Dm644 misc/emacs/go-mode-load.el $PKG/usr/share/emacs/site-lisp/go-mode-load.el
install -Dm644 misc/emacs/go-mode.el $PKG/usr/share/emacs/site-lisp/go-mode.el

install -Dm644 misc/vim/syntax/go.vim $PKG/usr/share/vim/vimfiles/syntax/go.vim
install -Dm644 misc/vim/ftdetect/gofiletype.vim $PKG/usr/share/vim/vimfiles/ftdetect/gofiletype.vim
install -Dm644 misc/vim/ftplugin/go/fmt.vim $PKG/usr/share/vim/vimfiles/ftplugin/go/fmt.vim
install -Dm644 misc/vim/ftplugin/go/import.vim $PKG/usr/share/vim/vimfiles/ftplugin/go/import.vim
install -Dm644 misc/vim/indent/go.vim $PKG/usr/share/vim/vimfiles/indent/go.vim

ln -sf /usr/lib${LIBDIRSUFFIX}/go/pkg/tool/linux_${GOARCH}/cgo $PKG/usr/bin/cgo
ln -sf /usr/lib${LIBDIRSUFFIX}/go/pkg/tool/linux_${GOARCH}/ebnflint $PKG/usr/bin/ebnflint

# we'll just check for all of their compilers :-)
for tool in 8a 8c 8g 8l 6a 6c 6g 6l 5a 5c 5g 5l ; do
  if [ -x $PKG/usr/lib${LIBDIRSUFFIX}/go/pkg/tool/linux_${GOARCH}/${tool} ] ; then
    ln -sf /usr/lib${LIBDIRSUFFIX}/go/pkg/tool/linux_${GOARCH}/${tool} $PKG/usr/bin/${tool}
  fi
done

# Put the profile scripts for setting PATH and env variables
mkdir -p $PKG/etc/profile.d
cat > $PKG/etc/profile.d/go.csh.new << EOF
#!/bin/csh
setenv GOOS linux
setenv GOARCH ${GOARCH}
setenv GOROOT /usr/lib${LIBDIRSUFFIX}/go
EOF
cat > $PKG/etc/profile.d/go.sh.new << EOF
#!/bin/sh
export GOOS="linux"
export GOARCH="${GOARCH}"
export GOROOT="/usr/lib${LIBDIRSUFFIX}/go"
EOF

chmod 0755 $PKG/etc/profile.d/go.csh.new
chmod 0755 $PKG/etc/profile.d/go.sh.new

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  AUTHORS CONTRIBUTORS LICENSE PATENTS README VERSION \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}