#!/bin/bash

# Slackware build script for fbpdf

# Written by B. Watson (yalhcru@gmail.com)

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

# Source tarball made from: git clone git://repo.or.cz/fbpdf.git

# 20200218 bkw: mupdf got updated to an incompatible version, use mupdf-legacy.
# 20170313 bkw: update for 20161202 (commit e31a61b), need due to mupdf update.

PRGNAM=fbpdf
VERSION=${VERSION:-20161202}
BUILD=${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
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

# This patch has been sent upstream. In my opinion, fbpdf is needlessly
# difficult to use without it.
# ...a year later, and upstream never responded to my email (not even to
# say "no"). It's staying here though.
[ "${PRISTINE:-no}" != "yes" ] && \
  patch -p1 < $CWD/navigation.diff

mkdir -p $PKG/usr/bin

# always build these two.
make ${PRGNAM}2 fbdjvu
install -s -m0755 ${PRGNAM}2 $PKG/usr/bin
install -s -m0755 fbdjvu $PKG/usr/bin

# autodetect mupdf-legacy, build fbpdf if found
if [ -d /opt/mupdf-legacy ]; then
  # Use old libs/headers. Works even if a newer mupdf is installed in /usr.
  PKG_CONFIG_PATH=/opt/mupdf-legacy/lib$LIBDIRSUFFIX/pkgconfig:$PKG_CONFIG_PATH
  export PKG_CONFIG_PATH

  # mupdf API keeps changing
  sed -i \
    -e '/^CFLAGS/s,$, $(shell pkg-config --cflags mupdf),' \
    -e 's,-lmupdf -lmupdfthird,$(shell pkg-config --libs mupdf) -lharfbuzz,' \
    Makefile

  make clean
  make $PRGNAM
  install -s -m0755 $PRGNAM $PKG/usr/bin
fi

# man page written for this build.
mkdir -p $PKG/usr/man/man1
gzip -9c < $CWD/$PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz
ln -s $PRGNAM.1.gz $PKG/usr/man/man1/${PRGNAM}2.1.gz
ln -s $PRGNAM.1.gz $PKG/usr/man/man1/fbdjvu.1.gz

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

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

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