#!/bin/bash
#  Copyright (C) 2009-2010  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=1.20.6
ARCH=${ARCH:-i486}
B=3

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

PKG=${TMP}/package-gpm

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

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

cd ${TMP}/gpm-${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 {} +

# Fixes lockups when signals arrive (thanks to BLFS):
zcat ${CWD}/gpm-1.20.1-select-1.patch.gz | patch -p1 --verbose

CFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --sysconfdir=/etc/gpm \
 --infodir=/usr/info \
 --mandir=/usr/man \
  emacs=/bin/false \
 --build=${ARCH}-dragora-linux-gnu

make EMACS=:
make install EMACS=: ELISP="" DESTDIR=$PKG

# 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
)
strip -g ${PKG}/usr/lib/libgpm.a

# Install "gpmconfig" script:
install -v -m 750 ${CWD}/gpmconfig/gpmconfig -D ${PKG}/usr/sbin/gpmconfig

( cd ${CWD}/gpmconfig/po
  for file in * ; do
    ext=${file#*.*.}
    mkdir -p ${PKG}/usr/share/locale/${ext}/LC_MESSAGES
    msgfmt -o ${PKG}/usr/share/locale/${ext}/LC_MESSAGES/gpmconfig.mo $file
  done
)

# Increments a little the security:
chmod -v 750 ${PKG}/usr/sbin/gpm

# Make symlink compatibility, just in case:
( cd ${PKG}/usr/lib ; ln -sf libgpm.so.2 libgpm.so )

# Fix permission:
chmod 755 ${PKG}/usr/lib/libgpm.so.2.1.0

# Copy files configuration of the source:
mkdir -p ${PKG}/etc/gpm
cp -a conf/*.conf ${PKG}/etc/gpm
# Handle config:
for f in ${PKG}/etc/gpm/*.conf ; do
  mv $f{,.new}
done

# Compress GNU info files and man-pages:
gzip -9N ${PKG}/usr/info/gpm.info ${PKG}/usr/man/man?/*.?

# Add the documentation:
mkdir -p ${PKG}/usr/doc/gpm-${V}
cp -a \
 BUGS COPYING MANIFEST README* TODO \
 $PKG/usr/doc/gpm-${V}
 ( cd doc
   cp -a \
    Announce FAQ HACK_GPM README.* changes/${V} \
    ${PKG}/usr/doc/gpm-${V}
 )

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

# Add the post-install script:
mkdir -p ${PKG}/install
zcat ${CWD}/post-install.gz > ${PKG}/install/post-install

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