#!/bin/sh

# Slackware build script for fbv

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

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

# The real DOWNLOAD link is http://s-tech.elsat.net.pl/fbv/fbv-1.0b.tar.gz
# but it seems to be intermittently broken, so the .info file has a mirrored
# copy.

PRGNAM=fbv
VERSION=${VERSION:-1.0b}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

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

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$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 . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# Check for new giflib API, apply patch only if needed. This changed
# between Slack 14.1 and 14.2.
grep -q DGifOpenFileName.*Error /usr/include/gif_lib.h && \
  patch -p1 < $CWD/giflib5_api.diff

# Patch is needed for linpng-1.6, and does no harm on 1.4.
patch -p1 < $CWD/png16_api.diff

# Man page is missing a few options, and --help output is wrong.
# Also next/prev/quit options weren't documented in either place.
patch -p1 < $CWD/manhelp.diff

# Not an autoconf script, doesn't take standard options.
./configure \
  --prefix=/usr \
  --mandir=/usr/man

# have to do this instead, to use our CFLAGS:
sed -i "s,-O2,$SLKCFLAGS," Makefile

# Fix build with giflib-5.1 and libpng16 (thanks to Arch)
patch -p1 < $CWD/giflib-5.1.patch
sed -i 's|setjmp(png_ptr->jmpbuf)|setjmp(png_jmpbuf(png_ptr))|' png.c

make
strip $PRGNAM
mkdir -p $PKG/usr/bin $PKG/usr/man/man1
make install DESTDIR=$PKG

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a COPYING ChangeLog README TODO VERSION $PKG/usr/doc/$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}