#!/bin/sh

# Copyright 2006, 2007, 2008, 2009, 2010  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=mesa
VERSION=${VERSION:-$(echo MesaLib-*.tar.?z* | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}

PKG_VERSION=${VERSION}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) export ARCH=i486 ;;
    arm*) export ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) export ARCH=$( uname -m ) ;;
  esac
fi

# Be sure this list is up-to-date:
DRI_DRIVERS="i810,i915,i965,mach64,mga,r128,r200,r300,r600,radeon,savage,sis,tdfx,unichrome,swrast"

NUMJOBS=${NUMJOBS:--j8}

CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-mesa

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

rm -rf $PKG
mkdir -p $TMP $PKG
cd $TMP
rm -rf Mesa-${VERSION}
tar xvf $CWD/MesaLib-${PKG_VERSION}.tar.?z* || exit 1
tar xvf $CWD/MesaGLUT-${PKG_VERSION}.tar.?z* || exit 1
tar xvf $CWD/MesaDemos-${PKG_VERSION}.tar.?z* || exit 1
cd Mesa-$VERSION

# Make sure ownerships and permissions are sane:
chown -R root:root .
find . \
  \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
  -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="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --sysconfdir=/etc \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/mesa-$VERSION \
  --with-dri-driverdir=/usr/lib${LIBDIRSUFFIX}/xorg/modules/dri \
  --with-dri-drivers="$DRI_DRIVERS" \
  --build=$ARCH-slackware-linux

# Nobody else is enabling this.  Seems like it's asking for trouble.
#  --enable-xcb

# This doesn't seem to build - maybe it needs something else...
#  --enable-gallium-nouveau 

make $NUMJOBS || make || exit 1
make install DESTDIR=$PKG || exit 1

# Install gears and glinfo:
mkdir -p $PKG/usr/bin
cp -a progs/demos/gears $PKG/usr/bin/gears
cp -a progs/demos/glinfo $PKG/usr/bin/glinfo

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

# Strip binaries:
find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null

# Compress and link manpages, if any:
if [ -d $PKG/usr/man ]; then
  ( cd $PKG/usr/man
    for manpagedir in $(find . -type d -name "man*") ; do
      ( cd $manpagedir
        for eachpage in $( find . -type l -maxdepth 1) ; do
          ln -s $( readlink $eachpage ).gz $eachpage.gz
          rm $eachpage
        done
        gzip -9 *.?
      )
    done
  )
fi

# Compress info files, if any:
if [ -d $PKG/usr/info ]; then
  ( cd $PKG/usr/info
    rm -f dir
    gzip -9 *
  )
fi

mkdir -p $PKG/usr/doc/Mesa-$PKG_VERSION/html
cp -a COPYING docs/relnotes-$VERSION.html $PKG/usr/doc/Mesa-$PKG_VERSION
rm -f docs/relnotes*.html docs/RELNOTES*
cp -a docs/*.html $PKG/usr/doc/Mesa-$PKG_VERSION/html

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

cd $PKG
/sbin/makepkg -l y -c n $TMP/${PKGNAM}-$PKG_VERSION-$ARCH-$BUILD.txz