#!/bin/bash
#  Copyright (C) 2010  Matías A. Fonzo, <selk@dragora.org>
#
#  This program is free software: you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation, either version 3 of the License, or
#  (at your option) any later version.
#
#  This program 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.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

CWD=$(pwd)

TMP=${TMP:-/tmp/sources}
OUT=${OUT:-/tmp/packages}

V=5.12.2
ARCH=${ARCH:-x86_64}
B=1

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2}

# Parallel jobs for the compiler:
JOBS=${JOBS:=-j4}

PKG=${TMP}/package-perl

rm -rf $PKG
mkdir -p $PKG $OUT

echo "Uncompressing the tarball..."
rm -rf ${TMP}/perl-${V}
lzip -cd ${CWD}/perl-${V}.tar.lz | tar -xvf - -C $TMP

cd ${TMP}/perl-${V}

# Set sane ownerships and permissions:
chown -R 0:0 .
find . \
 \( -perm 2777 -o \
    -perm 777  -o \
    -perm 775  -o \
    -perm 711  -o \
    -perm 555  -o \
    -perm 511     \
 \) -exec chmod 755 {} + \
  -o \
 \( -perm 666 -o \
    -perm 664 -o \
    -perm 600 -o \
    -perm 444 -o \
    -perm 440 -o \
    -perm 400    \
 \) -exec chmod 644 {} +

# The following sed causes DynaLoader.a to be built with -fPIC so it can
# be linked into a shared library later:
sed -i -e "s@pldlflags=''@pldlflags=\"\$cccdlflags\"@g" \
    -e "s@static_target='static'@static_target='static_pic'@g" Makefile.SH

./Configure -des \
 -Dprefix=/usr \
 -Dvendorprefix=/usr \
 -Dlibpth="/usr/local/lib64 /usr/lib64 /lib64" \
 -Dvendorlib=/usr/lib64/perl5/vendor_perl \
 -Dvendorarch=/usr/lib64/perl5/vendor_perl \
 -Darchlib=/usr/lib64/perl5/${V}/${ARCH}-linux-gnu-thread-multi \
 -Dprivlib=/usr/lib64/perl5/${V} \
 -Dsitelib=/usr/lib64/perl5/site_perl/${V} \
 -Dinstallsitearch=/usr/lib64/perl5/site_perl/${V}/${ARCH}-linux-gnu-thread-multi \
 -Dinstallsitelib=/usr/lib64/perl5/site_perl/${V} \
 -Dman1dir=/usr/man/man1 \
 -Dman3dir=/usr/man/man3 \
 -Dpager="/usr/bin/less -isr" \
 -Dusethreads -Duseithreads \
 -Duseshrplib \
 -Doptimize="$DCFLAGS" \
 -Darchname=${ARCH}-linux-gnu

make $JOBS
if [[ -n $CHECK ]]; then
  make test;
fi
make install DESTDIR=$PKG

# Fix permissions of the package:
( cd $PKG
  find . -perm 555 | xargs chmod 755
  find . -perm 444 | xargs chmod 644
)

mkdir -p ${PKG}/usr/lib64/perl5/vendor_perl/${V}/${ARCH}-linux-gnu-thread-multi

# Replace hard links:
( cd ${PKG}/usr/bin
  mv perl perl${V}
  ln -sf perl${V} perl
  ln -sf c2ph pstruct
  ln -sf s2p psed
)

# Strip binaries & libraries:
( cd $PKG
  find . -type f | xargs file | awk '/ELF/ && /executable/ || /shared object/' | \
   cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

# Compress and link manpages:
( cd ${PKG}/usr/man
  find . -type f -exec gzip -9Nf '{}' +
  find . -type l | while read file ; do
    ln -sf $(readlink $file).gz ${file}.gz
    rm $file
  done
)

# Replace hard links:
( cd ${PKG}/usr/man/man1
  ln -sf c2ph.1.gz pstruct.1.gz
  ln -sf s2p.1.gz psed.1.gz
)

# Add the documentation:
mkdir -p ${PKG}/usr/doc/perl-${V}
cp -a \
 AUTHORS Artistic Changes Copying MANIFEST \
 README README.linux README.micro \
 ${PKG}/usr/doc/perl-${V}

# Copy the description files:
mkdir -p ${PKG}/description
cp ${CWD}/description/* ${PKG}/description

cd $PKG
makepkg -l ${OUT}/perl-${V}-${ARCH}-${B}.tlz