#!/bin/bash

# Slackware build script for mediaextract

# Written by B. Watson (urchlay@slackware.uk)

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

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=mediaextract
VERSION=${VERSION:-1.1.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

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

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

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 $PRGNAM-v$VERSION
unzip $CWD/$PRGNAM-v$VERSION.zip -x '*/build-*/*'
cd $PRGNAM-v$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 {} \+

# 20220319 bkw: gcc and clang were both hitting the 4GB per-process
# memory limit, due to ridiculous preprocessor abuse in riff.c. The
# thing was doing a bunch of nested macro expansions, to determine
# the maximum size for an array... turns out the size it calculated
# was 9. The patch just hardcodes it to 9 and gets rid of the nested
# macro calls. This should be revisited when/if there's a new
# version of mediaextract.
patch -p1 < $CWD/compilefix.diff

cd source
mkdir -p build-linux32 build-linux64

# The last -e here stops it building the man page. Do this because
# we have our own (better-formatted) man page, and also to fix
# parallel builds.
sed -i \
    -e "s,-Werror,," \
    -e "/^CFLAGS/s,-O2 -g,$SLKCFLAGS," \
    -e "/all:/s, [^ ]*MANPAGE.*$,," \
    Makefile

make

# upstream's install target is weird and inflexible.
mkdir -p $PKG/usr/bin $PKG/usr/man/man1 $PKG/usr/doc/$PRGNAM-$VERSION
install -s -m0755 build-linux*/$PRGNAM $PKG/usr/bin
install    -m0644 LICENSE.txt ../README* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# upstream's generated man page has horrible formatting, and the
# author's own name gets mangled (the ö came out as ??). I spent
# some time reformatting it in RST, and also added the examples from
# the README.md.
gzip -9c < $CWD/$PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz

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