#!/bin/bash

# mesa.SlackBuild
# Heavily based on the original Slackware build scripts,
# Modified by Stuart Winter <stuart@armedslack.org>
#
# 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

# Determine the CFLAGS for the known architectures:
case $ARCH in
   arm)     export SLKCFLAGS="-O2 -march=armv4 -mtune=xscale" ;;
   powerpc) export SLKCFLAGS="-O2" ;;
   sparc)   export SLKCFLAGS="-O2" ;;
   hppa)    export SLKCFLAGS="-O2" ;;
   *)       export SLKCFLAGS="-O2" ;;
esac

# Extract source:
tar xjvvf $CWD/MesaLib-$VERSION.tar.bz2
tar xjvvf $CWD/MesaGLUT-$VERSION.tar.bz2
tar xjvvf $CWD/MesaDemos-$VERSION.tar.bz2
cd Mesa-$VERSION
slackhousekeeping

# Patch to build into "/usr":
# zcat $CWD/mesa.linux-dri-x86.diff.gz | patch -p1 --verbose  || failpatch
zcat $PORTCWD/sources/mesa.linux-dri.installdir.diff.gz | patch -p1 --verbose  || failpatch
zcat $PORTCWD/sources/mesa.linux-dri.sis.diff.gz | patch -p1 --verbose  || failpatch
zcat $PORTCWD/sources/mesa.linux-dri-armv4.diff.gz | patch -p1 --verbose  || failpatch

# Let's have everything in /usr:
#fgrep -lr -- '/usr/local' . | xargs sed -i 's?/usr/local?/usr?g'

# Build and install:
#make linux-dri-x86 || failmake
#make linux-fbdev || failmake
# On ARM this doesn't parallel build, keep it to a single job - never specify
# even -j1 since the build fails.
make linux-dri || failmake

# Patch to put into /tmp/package-mesa:  (sorry, I know this should use $PKG ;-)
#zcat $CWD/mesa.linux-dri-x86-fake-destdir.diff.gz | patch -p1 --verbose || failpatch
#make install DESTDIR=$PKG || failinstall
zcat $PORTCWD/sources/mesa.linux-dri.fakedestdir.diff.gz | patch -p1 --verbose || failpatch
make install || failinstall

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

# Add a documentation directory:
cd docs
mkdir -p $PKG/usr/doc/Mesa-$VERSION
cp -a * $PKG/usr/doc/Mesa-$VERSION
( cd $PKG/usr/doc/Mesa-$VERSION
  rm RELNOTES* relnotes*
)
cp -a RELNOTES-$VERSION relnotes-$VERSION.html relnotes.html $PKG/usr/doc/Mesa-$VERSION

# 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 pjcf $PORTCWD/mesa-compiled.tar.bz2 Mesa-$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