#!/bin/bash

# libaio.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter for ARMedslack.
#
# Copyright 2006, 2008  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
export CWD=$SLACKSOURCE/$PKGSERIES/$PKGNAM
export PORTCWD=$PWD

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
export PKG=$TMP/package-$PKGNAM
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# Determine the CFLAGS for the known architectures:
case $PORTARCH in
   arm)     export SLKCFLAGS="-O2 -march=armv3 -mtune=xscale" ;;
   powerpc) export SLKCFLAGS="-O2" ;;
   sparc)   export SLKCFLAGS="-O2" ;;
   hppa)    export SLKCFLAGS="-O2" ;;
   *)       export SLKCFLAGS="-O2" ;;
esac

# Determine patch level required & apply the patch:
function apply_patch () {
 patchfile=$1

 # Unpack if it's bzip2 or gzip:
 FTYPE=$( file $patchfile )
 if [ "$( echo $FTYPE | grep "bzip2 compressed" )" ]; then
    bzcat -f $patchfile > $TMPBUILD/$patchfile.unpacked
    patchfile=$TMPBUILD/$patchfile.unpacked
  elif [ "$( echo $FTYPE | grep "gzip compressed" )" ]; then
    zcat -f $patchfile > $TMPBUILD/$patchfile.unpacked
    patchfile=$TMPBUILD/$patchfile.unpacked
 fi

 # Most patches should not require more levels than this:
 success=0
 for (( pl=0 ; pl<=5 ; pl++ )) ; do
   echo "Patch : $patchfile , trying patch level $pl"
     patch --fuzz=20 -t --dry-run -p$pl < $patchfile > /dev/null 2>&1 && success=1 && break
   done
 if [ $success = 1 ]; then
    echo "Patch: $patchfile will apply at level $pl"
    patch --fuzz=20 --verbose -p$pl < $patchfile
    return 0
  else
    echo "Patch: $patchfile failed to apply at levels 0-5"
    return 1
 fi
}

# Extract source:
tar xvvf $CWD/$PKGNAM-$VERSION.tar*
cd $PKGNAM-$VERSION
slackhousekeeping

# Get some ARM support in there:
zcat $PORTCWD/sources/*diff* | patch -p1
for i in debian/patches/*patch* ; do
  apply_patch $i
done

# Build:
make $NUMJOBS CC="cc $SLKCFLAGS" || failmake

# Install into package:
make prefix=$PKG/usr install || failinstall
mkdir $PKG/lib
mv $PKG/usr/lib/* $PKG/lib
rm -f $PKG/lib/libaio.so
# I'm on a strict diet.
rm -f $PKG/lib/libaio.a
( cd $PKG/usr/lib ; ln -vsf ../../lib/libaio.so.1.?.* libaio.so )

# Add a documentation directory:
mkdir -p $PKG/usr/doc/${PKGNAM}-$VERSION
cp -a \
  COPYING ChangeLog INSTALL TODO \
  $PKG/usr/doc/${PKGNAM}-$VERSION

# If necessary, start the fakeroot server so we can set file/dir ownerships:
start_fakeroot

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links