#!/bin/sh
# Copyright 2006, 2007  Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


PKGNAM=mesa32
VERSION=${VERSION:-7.0.1}
ARCH=${ARCH:-x86_64}
BUILD=${BUILD:-3}
DISTRO=${DISTRO:-slamd64}
MESAARCH=x86

if [ $DISTRO = slackware ]; then
	PKGARCH=$ARCH
else
	PKGARCH=${ARCH}_${DISTRO}
fi

if [ $DISTRO = slamd64 ]; then
	LIBSUFFIX=64
else
	LIBSUFFIX=
fi

CWD=$(pwd)
if [ "$TMP" = "" ]; then
  TMP=/tmp
fi
PKG=/tmp/package-mesa32
rm -rf $PKG
mkdir -p $PKG

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
fi

cd $TMP
rm -rf Mesa-${VERSION}
tar xjvf $CWD/MesaLib-$VERSION.tar.bz2
tar xjvf $CWD/MesaGLUT-$VERSION.tar.bz2
#tar xjvf $CWD/MesaDemos-$VERSION.tar.bz2
cd Mesa-$VERSION

# Make sure ownerships and permissions are sane:
chown -R root:root .
find . -perm 666 -exec chmod 644 {} \;
find . -perm 664 -exec chmod 644 {} \;
find . -perm 600 -exec chmod 644 {} \;
find . -perm 444 -exec chmod 644 {} \;
find . -perm 400 -exec chmod 644 {} \;
find . -perm 440 -exec chmod 644 {} \;
find . -perm 777 -exec chmod 755 {} \;
find . -perm 775 -exec chmod 755 {} \;
find . -perm 511 -exec chmod 755 {} \;
find . -perm 711 -exec chmod 755 {} \;
find . -perm 555 -exec chmod 755 {} \;

# Patch to fix FAST_X86_FPU undefined error
#zcat $CWD/mesa.tnl-FAST_X86_FPU.diff.gz | patch -p1 --verbose || exit 1

# Build and install:
(
	# Patch to install DRI drivers into "/usr":
	zcat $CWD/mesa.linux-dri-$MESAARCH.diff.gz | patch -p1 --verbose  || exit 1

	# Patch to build DRI drivers only for hardware that is also supported by linux-dri-x86-64
	zcat $CWD/mesa.linux-dri-$MESAARCH-$ARCH.diff.gz | patch -p1 --verbose  || exit 1

	. /etc/profile.d/32dev.sh # Sort out gcc -m32 for us; this is from the 'devel32' package
	make -j 10 linux-dri-$MESAARCH || exit 1 # no -j, breaks.

	# Patch to put into /tmp/package-mesa:  (sorry, I know this should use $PKG ;-)
	zcat $CWD/mesa.linux-dri-$MESAARCH-fake-destdir.diff.gz | patch -p1 --verbose  || exit 1

	make install || exit 1
)

# Install some "demos":
#( cd progs/xdemos
#  make -i
#  mkdir -p $PKG/usr/bin/32
#  cp glthreads glxcontexts glxdemo glxgears glxgears_fbconfig glxheads \
#    glxinfo glxpbdemo glxpixmap \
#    $PKG/usr/bin/32
#)

( cd $PKG
	# Remove stuff in common with the 64-bit package
	rm -rf usr/include
	# Strip binaries:
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
makepkg -l y -c n ../${PKGNAM}-$VERSION-$PKGARCH-$BUILD.tgz