#!/bin/bash
#
# ELS script to build sysvinit-2.86. 
#
# The sysvinit package contains init as well as shutdown, sulogin and
# other utilities with init and sulogin being statically-linked.
#
# Static linking provides an extra degree of fault-tolerance by
# ensuring that init can still function even if libraries become
# corrupted or deleted.  The best fault-tolerance can be achieved
# when sysvinit-static is used with bash-static as a root shell.
#
# Source code is from ftp://ftp.cistron.nl/pub/people/miquels/sysvinit/
#
#
# This script is public domain software and may be freely copied.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
#
# Define the package name, source directory, build directory and
# staging directory paths.  Prefixes to directories may be overridden
# by setting shell variables SRC, BUILD and STAGING.  For example,
# doing "export SRC=/root/foo" before calling this script will override
# the default /usr/src and set SRC_DIR to /root/foo/$PKG_NAME instead.
#
PKG_NAME=$(basename $0)
SRC_DIR=${SRC:-/usr/src}/$PKG_NAME
# Remove "-static" from the source path using sed.
SRC_DIR=$(echo "$SRC_DIR" | sed s/-static//)
BUILD_DIR=${BUILD:-/var/tmp/build}/$PKG_NAME
STAGING_DIR=${STAGING:-/var/tmp/staging}/$PKG_NAME

# Check that the source directory really exits and bail out if not.
if ! [ -d $SRC_DIR ]; then
  echo "$PKG_NAME: Cannot find source code directory $SRC_DIR."
  exit 1
fi

# Do not overwrite existing build directory.
if [ -d $BUILD_DIR ]; then
  echo "$PKG_NAME: Build directory $BUILD_DIR already exists."
  exit 2
else
  mkdir -p $BUILD_DIR
fi

# Do not overwrite existing staging directory.
if [ -d $STAGING_DIR ]; then
  echo "$PKG_NAME: Staging directory $STAGING_DIR already exists."
  exit 4
else
  mkdir -p $STAGING_DIR
fi

# This is not one of the packages that can be configured and built
# completely outside of the source tree.  So in order to leave the
# original source untouched, the contents of $SRC_DIR are first copied
# to $BUILD_DIR.  The copy in $BUILD_DIR is then modified to suit the
# configuration.
cp -dpR $SRC_DIR/* $BUILD_DIR

# This is not really a configuration change, it is to make sure that
# /dev/initctl gets created properly in the staging area.
cd $BUILD_DIR/src

# Configuration is done by passing variables to make in order to over-
# ride the values defined in the Makefile.  The CC variable is used to
# configure the use of gcc and i586 compatible code.
make CC="gcc -march=i586" STATIC="-static"

# Check return code and bail if it looks bad.
if [ $? -gt 0 ]; then
  echo "$PKG_NAME: Build failed!"
  exit 16
fi

# Set up a directory structure and install into staging area.
mkdir $STAGING_DIR/bin
mkdir $STAGING_DIR/dev
mkdir $STAGING_DIR/sbin
mkdir $STAGING_DIR/usr
mkdir $STAGING_DIR/usr/bin
mkdir $STAGING_DIR/usr/include
mkdir $STAGING_DIR/usr/share
mkdir $STAGING_DIR/usr/share/man
mkdir $STAGING_DIR/usr/share/man/man1
mkdir $STAGING_DIR/usr/share/man/man5
mkdir $STAGING_DIR/usr/share/man/man8
make ROOT=$STAGING_DIR install

# Check return code and bail if it looks bad.
if [ $? -gt 0 ]; then
  echo "$PKG_NAME: Installation to staging area failed!"
  exit 32
fi

# Create the initctl pipe that gets skipped during installs using
# the ROOT variable.
mknod -m 600 $STAGING_DIR/dev/initctl p

# Keep a copy of the license document.
install -D -o root -g root -m 644 $SRC_DIR/COPYRIGHT \
  $STAGING_DIR/usr/share/doc/$PKG_NAME/LICENSE

# Compress documentation to save space.
gzip -r $STAGING_DIR/usr/share/man
gzip -r $STAGING_DIR/usr/share/doc

# Create the package
if ! [ "$PKG_COMMAND" = "" ]; then
  export $PKG_NAME $STAGING_DIR
  $PKG_COMMAND
else
  cd $STAGING_DIR
  tar -zcf ../$PKG_NAME.i586.tar.gz *
fi

# end of blueprint