#!/bin/sh

# Slackware build script for mupdf

# Originally written by Hubert Hesse (email removed).
# Heavily modified by B. Watson (yalhcru@gmail.com).

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20180623 bkw: BUILD=2, add patch for dynamic linking. Thanks
#               to Thomas Morper for pointing me in the right direction.
# 20180615 bkw: update for 1.13.0, move old change comments to ChangeLog.old
# 20180101 bkw: update for 1.12.0.
# 20170711 bkw: update for 1.11.
# 20170621 bkw: fix build with -current's newer openjpeg, BUILD=2.
# 20170122 bkw: update for 1.10a.

PRGNAM=mupdf
VERSION=${VERSION:-1.13.0}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi
set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION-source
tar xvf $CWD/$PRGNAM-$VERSION-source.tar.gz
cd $PRGNAM-$VERSION-source

# don't find/chown/chmod until after the thirdparty junk is removed.

# Build against system libs instead of bundled ones. If we didn't do this,
# libmupdf would be useless for building anything else.

# Everything removed from thirdparty/ has to be installed systemwide, and must
# either be a Slackware core pkg, or mentioned in REQUIRES= in the .info
# file... except mujs, which is mupdf's javascript support lib. If missing,
# we end up with a mupdf with no JS support, which is probably a good idea
# for the default build. If you want javascript, MUJS=yes in the env.

MUJS="${MUJS:-no}"

if [ "$MUJS" = "yes" ]; then
  mv thirdparty/mujs .keep
  rm -rf thirdparty/*
  mv .keep thirdparty/mujs
  WITH=with
else
  rm -rf thirdparty/*
  sed -i 's,murun\.o,,' Makefile
  sed -i 's,pdf_drop_js.*,;,' source/pdf/pdf-xref.c
  sed -i '/murun_main/d' source/tools/mutool.c
  WITH=without
fi

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \+

# ref https://bugs.ghostscript.com/show_bug.cgi?id=697175
sed -i '/#define *OPJ_STATIC/d' source/fitz/load-jpx.c

# Hard-code the version number so it'll stop trying to use git to retrieve
# it and spewing harmless but scary 'fatal: Not a git repository' errors.
sed -i "/^VERSION/s,=.*,= $VERSION," Makefile

# 20180623 bkw: Finally, dynamic linking again. Patch is based on
# http://www.linuxfromscratch.org/patches/blfs/svn/mupdf-1.13.0-shared_libs-1.patch
# but I added versioned sonames. See README_shared.txt for the gory details.
STATIC=${STATIC:-no}

if [ "$STATIC" != "yes" ]; then
  patch -p1 < $CWD/shared_libs.diff
  LIBTYPE=shared
else
  LIBTYPE=static
fi

make verbose=yes \
  XCFLAGS="$SLKCFLAGS -DJBIG_NO_MEMENTO" \
  HAVE_MUJS="$MUJS" \
  build=release \
  prefix=/usr \
  libdir=/usr/lib$LIBDIRSUFFIX \
  mandir=/usr/man \
  docdir=/usr/doc/$PRGNAM-$VERSION \
  DESTDIR=$PKG \
  all extra-apps install

# 1.12.0 used to install this stuff with 'make install', 1.13.0 doesn't:
for i in mjsgen muraster mupdf-x11-curl; do
  [ -e build/release/$i ] && install -s -m0755 build/release/$i $PKG/usr/bin
done

strip $PKG/usr/bin/*

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

# Compatibility symlinks. Older versions, the binary is just "mupdf".
# Separate -curl binary exists in 1.5 but not 1.4.
ln -s $PRGNAM-x11 $PKG/usr/bin/$PRGNAM
ln -s $PRGNAM.1.gz $PKG/usr/man/man1/$PRGNAM-x11.1.gz
[ -e $PKG/usr/bin/$PRGNAM-x11-curl ] && \
  ln -s $PRGNAM.1.gz $PKG/usr/man/man1/$PRGNAM-x11-curl.1.gz

# mujstest is useless if we don't have JS support. Also libmupdfthird.a
# ends up 8 bytes long & has no object code in it.
[ "$MUJS" = "yes" ] || \
  rm -f $PKG/usr/bin/mujstest \
        $PKG/usr/lib$LIBDIRSUFFIX/libmupdfthird.a

# Installed permissions are atrocious (everything 755).
find $PKG -type f | xargs chmod 644
chmod 755 $PKG/usr/bin/*
if [ "$STATIC" != "yes" ]; then
  chmod 755 $PKG/usr/lib$LIBDIRSUFFIX/lib*.so.*.*
fi

# .desktop taken from debian and modified:
# - make it validate.
# - add mime types for cbz and xps.
mkdir -p $PKG/usr/share/applications
cat $CWD/$PRGNAM.desktop > $PKG/usr/share/applications/$PRGNAM.desktop

# Icon converted from platform/x11/mupdf.ico, with icotool.
mkdir -p $PKG/usr/share/pixmaps
cat $CWD/$PRGNAM.png > $PKG/usr/share/pixmaps/$PRGNAM.png

# .pc file taken from debian and parameterized.
PCLIBS="-l$PRGNAM -lfreetype -lharfbuzz -ljbig2dec -ljpeg -lcrypto -lopenjp2 -lz -lm"
[ "$MUJS" = "yes" ] && PCLIBS="$PCLIBS -lmupdfthird"

mkdir -p $PKG/usr/lib$LIBDIRSUFFIX/pkgconfig/
sed -e "s,@LIB@,lib$LIBDIRSUFFIX,g" \
    -e "s,@VERSION@,$VERSION,g" \
    -e "s,@PCLIBS@,$PCLIBS,g" \
    $CWD/$PRGNAM.pc > $PKG/usr/lib$LIBDIRSUFFIX/pkgconfig/$PRGNAM.pc

# 'make install' already installed most of the docs.
cp -a CONTRIBUTORS $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# slack-desc will conveniently say whether javascript is built in,
# and whether libs are shared or static.
mkdir -p $PKG/install
sed -e "s,@WITH@,$WITH," \
    -e "s,@LIBTYPE@,$LIBTYPE," \
    $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}