#!/bin/bash
#  Copyright (C) 2010-2011  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=Mesa
V=${V:-7.10.3}
ARCH=${ARCH:-i486}
B=${B:-1}

# Flags for the compiler:
DCFLAGS=${DCFLAGS:=-O2 -march=i486 -mtune=i686}

# Parallel jobs for the compiler:
JOBS=${JOBS:=-j6}

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

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

cd $TMP
rm -rf ${P}-${V}

echo "Uncompressing the tarball(s)..."
for file in MesaLib-${V} MesaGLUT-${V} ; do
  tar xvf ${CWD}/${file}.tar.lz
done

cd ${P}-${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 {} +

CFLAGS="$DCFLAGS" \
CXXFLAGS="$DCFLAGS" \
./configure \
 --prefix=/usr \
 --infodir=/usr/info \
 --mandir=/usr/man \
 --docdir=/usr/doc/mesa-${V} \
 --htmldir=/usr/doc/mesa-${V}/html \
 --disable-debug \
 --enable-xcb \
 --enable-glx-tls \
 --disable-gallium-nouveau \
 --with-dri-driverdir=/usr/lib/xorg/modules/dri \
 --build=${ARCH}-dragora-linux-gnu

make $JOBS || make;
make install DESTDIR=$PKG

# Compress .info page(s)?:
if [[ -d ${PKG}/usr/info ]]; then
  ( cd ${PKG}/usr/info
    rm -f dir  # Redundancy.
    gzip -9N *.info*
  )
fi

# Compress and link .man page(s)?:
if [[ -d ${PKG}/usr/man ]]; then
  ( cd ${PKG}/usr/man
    find . -type f -exec gzip -9N '{}' +
    find . -type l | while read file ; do
      ln -sf $(readlink $file).gz ${file}.gz
      rm $file
    done
  )
fi

# Copy Mesa documentation:
mkdir -p ${PKG}/usr/doc/mesa-${V}/{html,spec}
install -p -m 644 docs/* ${PKG}/usr/doc/mesa-${V}
rm -f ${PKG}/usr/doc/mesa-${V}/RELNOTES-*
rm -f ${PKG}/usr/doc/mesa-${V}/relnotes-*.html
install -p -m 644 docs/relnotes.html ${PKG}/usr/doc/mesa-${V}
if [[ -r docs/relnotes-${V}.html ]]; then
  install -p -m 644 docs/relnotes-${V}.html ${PKG}/usr/doc/mesa-${V}
fi
mv ${PKG}/usr/doc/mesa-${V}/*.html ${PKG}/usr/doc/mesa-${V}/html
mv ${PKG}/usr/doc/mesa-${V}/*.spec ${PKG}/usr/doc/mesa-${V}/spec

cd $PKG

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

# Copy description files, adding the post install script:
mkdir -p description
install -m 644 ${CWD}/descriptions/mesa/?? description/

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