#!/bin/bash

# mesa.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter <mozes@slackware.com>
#
# 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.

# Record toolchain & other info for the build log:
slackbuildinfo

# Paths to skeleton port's source & real Slackware source tree:
export CWD=$SLACKSOURCE/$PKGSERIES/$PKGNAM
export PORTCWD=$PWD

# Temporary build locations:
export TMPBUILD=$TMP/build-$PKGNAM
#export PKG=$TMP/package-$PKGNAM
export PKG=/tmp/package-mesa
mkpkgdirs # Delete & re-create temporary directories then cd into $TMPBUILD

# 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"

# Determine the CFLAGS for the known architectures:
case $ARCH in
   arm)     export SLKCFLAGS="-O2 -march=armv4t"
            # ARM didn't used to work with SiS, but I think we need it for the OpenRD Client.
            DRI_DRIVERS="i810,i915,i965,mach64,mga,r128,r200,r300,r600,radeon,savage,tdfx,unichrome,swrast"
            # should be "xlib" but we want to build the header file 
            # GL/internal/dri_interface.h for xorg-server.
            # 
            # Mesa v7.7 needs --disable-gallium because this won't compile on ARM.
            ARCH_CONFARGS="--disable-gallium --with-driver=dri" # should be xlib but we want to build the header file
 #           ARCH_CONFARGS="--disable-gallium --with-driver=xlib" # should be xlib but we want to build the header file
            export LIBDIRSUFFIX="" ;;
   *)       export SLKCFLAGS="-O2" ;;
esac

# Extract source:
echo "Unpacking sources..."
tar xf $CWD/MesaLib-$VERSION.tar.?z*
tar xf $CWD/MesaGLUT-$VERSION.tar.?z*
tar xf $CWD/MesaDemos-$VERSION.tar.?z*
cd Mesa-$VERSION || exit 1
slackhousekeeping

# Apply patches:

# These aren't for ARM:
#  --enable-gallium-intel \
#  --enable-gallium-radeon \
#
# Configure:
autoreconf -vfi -I include/
CFLAGS="$SLKCFLAGS" \
./configure $ARCH_CONFARGS \
  --prefix=/usr \
  --sysconfdir=/etc \
  --libdir=/usr/lib${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-gnueabi || failconfig

# Build:
make $NUMJOBS || make || exit 1

# Install into package:
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
)

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

# I know this is messy but the Slackware configure options
# for xorg-server looks for Mesa source in here, and it's easier
# to do this than modify the config options:
( cd $TMPBUILD
  echo "Archiving compiled mesa source..."
  tar -Ixz -pcf $PORTCWD/mesa-compiled.tar.xz Mesa-$VERSION )

# If necessary, start the fakeroot server so we can set file/dir ownerships:
start_fakeroot

# Apply generic Slackware packaging policies:
cd $PKG
slackstripall   # strip all .a archives and all ELFs
slackgzpages -i # compress man & info pages and delete usr/info/dir
slackslack      # chown -R root:root, chmod -R og-w, slackchown, slack644docs
slackdesc       # install slack-desc and doinst.sh
slackmp         # run makepkg -l y -c n

# Perform any final checks on the package:
cd $PKG
slackhlinks     # search for any hard links