#!/bin/sh

# Heavily based on the Slackware 13.0 SlackBuild

# Slackware build script for srm (http://srm.sourceforge.net/)

# Copyright 2008 Corrado Franco (http://www.conraid.net)
# 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.

# Exit on most errors
set -e 

# Set variables:
CWD=$(pwd)

PRGNAME=${PRGNAME:-srm}		
VERSION=${VERSION:-1.2.10}	
ARCH=${ARCH:-i486}		
BUILD=${BUILD:-1}
TAG=${TAG:-cf}		
TMP=${TMP:-/tmp/tgz}	
JOBS=${JOBS:-2}

PKG=$TMP/package-$PRGNAME
DOCS="$PKG/usr/doc/$PRGNAME-$VERSION"

# Insert document files in this variable
DOCFILES="AUTHORS COPYING NEWS README ChangeLog TODO"	


# Set compiling FLAGS
if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
fi

# Extract source and prepare:
rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf $PRGNAME-$VERSION

# Generic extract section
if [ -e $CWD/$PRGNAME-$VERSION.tar.gz ]; then
    SOURCEDIR=$(tar tzf $CWD/$PRGNAME-$VERSION.tar.gz | head -1 | tr -d \/)
    tar xzvf $CWD/$PRGNAME-$VERSION.tar.gz
elif [ -e $CWD/$PRGNAME-$VERSION.tar.bz2 ]; then
    SOURCEDIR=$(tar tjf $CWD/$PRGNAME-$VERSION.tar.bz2 | head -1 | tr -d \/)
    tar xjvf $CWD/$PRGNAME-$VERSION.tar.bz2
elif [ -e $CWD/$PRGNAME-$VERSION.tgz ]; then
    SOURCEDIR=$(tar tzf $CWD/$PRGNAME-$VERSION.tgz | head -1 | tr -d \/)
    tar xzvf $CWD/$PRGNAME-$VERSION.tgz
elif [ -e $CWD/$PRGNAME-$VERSION.zip ]; then
    SOURCEDIR=$(unzip -l cryptopp552.zip | sed -n '4{s/.* \(.*\)\//\1/;p}')
    unzip $CWD/$PRGNAME-$VERSION.zip
else
    echo "No source file found"
    exit 1 # Or add a command for a specific format    
fi


# Generic "change dir" section
if [ -d $SOURCEDIR ]; then
    cd $SOURCEDIR
elif [ -d $PRGNAME-$VERSION ]; then
    cd $PRGNAME-$VERSION
elif [ -d $PRGNAME ]; then
    cd $PRGNAME
else
    echo "No source dir found"
    exit 1 # Or add a command for a specific directory
fi
                    

# Make sure ownerships and permissions are sane:
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# Configure:

if [ -e ./autogen.sh ]; then
    ./autogen.sh --noconfig
fi

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc \
  --build=$ARCH-slackware-linux

# Build and install:
make -j $JOBS

if grep -q DESTDIR [Mm]akefile; then
    make install DESTDIR=$PKG
elif grep '^prefix' [Mm]akefile; then
    make prefix=$PKG/usr install
elif grep '^PREFIX' [Mm]akefile; then    
    make PREFIX=$PKG/usr install
else
    make prefix=$PKG/usr PREFIX=$PKG/usr install    
fi

# Strip binaries:
( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

                
# Sane man e doc path
if [ -d $PKG/usr/share/man ]; then
    mv $PKG/usr/share/man $PKG/usr
fi
if [ -d $PKG/usr/share/doc ]; then
    mv $PKG/usr/share/doc $PKG/usr
    if [ -d $PKG/usr/doc/$PRGNAME ]; then
        mv $PKG/usr/doc/$PRGNAME $DOCS
    fi
                    
fi


# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
( cd $PKG/usr/man
  find . -type f -exec gzip -9 {} \;
  for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
)
fi

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
rm -f $PKG/usr/info/dir
gzip -9 $PKG/usr/info/*.info*
fi

# Remove perllocal.pod and other special files that don't need to be installed,
# as they will overwrite what's already on the system.  If this is not needed, 
# remove it from the script.
( cd $PKG
    # Remove 'special' files
    find . -name perllocal.pod \
    -o -name ".packlist" \
    -o -name "*.bs" \
    | xargs rm -f
)


# Add a documentation directory:
mkdir -p ${DOCS}
for i in ${DOCFILES}; do
    if [ -e ${i} ]; then
        if ! [ -L ${i} ]; then
	    cp -a ${i} ${DOCS}
	else
	    cp -LRp ${i} ${DOCS}
        fi
    fi;
done

# Add a slackbuild script:
cat $CWD/$PRGNAME.SlackBuild > $PKG/usr/doc/$PRGNAME-$VERSION/$PRGNAME.SlackBuild

# Add slack-desc and doinst.sh, if any
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
if [ -f $CWD/doinst.sh.gz ]; then
    zcat $CWD/doinst.sh.gz > $PKG/install/doinst.sh
elif [ -f $CWD/doinst.sh ]; then
    cat $CWD/doinst.sh > $PKG/install/doinst.sh
fi


# Create slack-required file:
if [ -x /usr/bin/requiredbuilder ]; then
    requiredbuilder -v -y -s $CWD $PKG
fi

# Create package:
cd $PKG
/sbin/makepkg -l y -c n $CWD/$PRGNAME-$VERSION-$ARCH-$BUILD$TAG.txz

# Clean file, if option is set: 
if [ "$1" = "--cleanup" ]; then
  rm -rf $TMP
fi