#!/bin/bash
#  Copyright (C) 2011  Matias 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}

P=libx86
V=${V:-1.1}
ARCH=${ARCH:-x86_64}
B=${B:-1}

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

PKG=${TMP}/package-${P}

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

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

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

# Apply a patch from Gentoo to build libx86 (thanks):
zcat ${CWD}/patches/libx86-0.99-ifmask.patch.gz | patch -p0 --verbose

# 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 {} +

export CFLAGS="$DCFLAGS"

make BACKEND="x86emu" LIBDIR=/usr/lib64
make LIBDIR=/usr/lib64 install DESTDIR=$PKG

strip --strip-unneeded ${PKG}/usr/lib64/libx86.so.1
strip --strip-debug ${PKG}/usr/lib64/libx86.a

# Copy the documentation:
mkdir -p ${PKG}/usr/doc/${P}-${V}
cp -a \
 debian/copyright \
 ${PKG}/usr/doc/${P}-${V}

cd $PKG

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

# Build the package:
makepkg -l ${OUT}/${P}-${V}-${ARCH}-${B}.tlz