#!/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=6.1
ARCH=${ARCH:-x86_64}
B=2

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

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

PKG=${TMP}/package-readline

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

echo "Uncompressing the tarball..."
rm -rf ${TMP}/readline-${V}
tar xvf ${CWD}/readline-${V}.tar.gz -C $TMP

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

# Apply official patches:
for patch in ${CWD}/patches/*-??? ; do
  if [[ -f $patch ]]; then
    patch -p0 < $patch --verbose
  fi
done

# 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 {} +

CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --libdir=/lib64 \
 --infodir=/usr/info \
 --mandir=/usr/man \
 --enable-multibyte \
 --build=${ARCH}-dragora-linux-gnu

make $JOBS SHLIB_LIBS=-lncurses
make install DESTDIR=$PKG

mkdir -p ${PKG}/usr/lib64
mv ${PKG}/lib64/lib{readline,history}.a ${PKG}/usr/lib64

rm -f ${PKG}/lib64/lib{readline,history}.so
( cd ${PKG}/usr/lib64
  ln -sf ../../lib64/libreadline.so.6 libreadline.so
  ln -sf ../../lib64/libhistory.so.6 libhistory.so
)
find ${PKG}/lib64 -perm 555 | xargs chmod 755

# 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
  find . -type f | xargs file | awk '/current ar archive/' | \
   cut -f 1 -d : | xargs strip --strip-debug 2> /dev/null
)

# Compress GNU info documents:
( cd ${PKG}/usr/info ; rm -f dir ; gzip -9N * )

# Compress man-pages:
gzip -9N ${PKG}/usr/man/man?/*

# Add the documentation:
mkdir -p ${PKG}/usr/doc/readline-${V}
cp -a \
 CHANGELOG CHANGES COPYING MANIFEST NEWS README USAGE \
 ${PKG}/usr/doc/readline-${V}

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

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