#!/bin/sh

# Slackware build script for flite
# Originally written by Martin Lefebvre (email removed)
# Now maintained by B. Watson (yalhcru@gmail.com), original author is MIA.
# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20181114 bkw:
# - BUILD=2
# - add WTFPL to script
# - always build the .info API docs
# - get rid of DOCS env variable
# - only build HTML docs if texi2html is available
# - update README to document the above
# - minor updates to man page and slack-desc
# - add HTML=no to skip building HTML docs

# 20180612 bkw: update for 2.1 (or is it 2.1.0?)

# 20170614 bkw:
# - add ldflags patch from King Beowulf, to allow external programs
#   to link correctly with libflite.so. BUILD=2.

# 20150623 bkw:
# - fix doc build failure with standalone SBo texi2html, thanks
#   to John Vogel for investigating this
# - add DOCS=no option, in case a future texi2html has more
#   issues

# 20150509 bkw:
# - update for 2.0.0
# - add HTML and .info docs
# - add man page
# - update HOMEPAGE
# - add optional extra voice support

# 20141020 bkw: fix handy-ruler, make VERSION respect environment.

# 20130411 bkw: Updated for flite 1.4, added fix for parallel builds.
# Removed --with-vox=cmu_us_kal16 configure flag (it doesn't seem to
# do anything).
# The updated version is released under the WTFPL, see
# http://www.wtfpl.net/txt/copying/ for details.

PRGNAM=flite
VERSION=${VERSION:-2.1}
BUILD=${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-release
tar xvf $CWD/$PRGNAM-$VERSION-release.tar.bz2
cd $PRGNAM-$VERSION-release
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 {} \+

# fix LDLAGS to allow external programs to find libflite.so
patch -p1 < $CWD/flite-ldflags-fix.patch

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --with-audio=alsa \
  --enable-shared \
  --build=$ARCH-slackware-linux

# Fix builds with SBo standalone texi2html. The -number option works
# with Slackware's ancient texi2html (from t/tetex), but would have to
# be --number-sections in the newer SBo texi2html. It turns out section
# numbering is enabled by default in both versions, so get rid of it...
sed -i '/texi2html/s,-number,,' doc/Makefile

make
make install prefix=$PKG/usr INSTALLLIBDIR=$PKG/usr/lib${LIBDIRSUFFIX}

# --disable-static is accepted by configure but totally ignored, so:
rm -rf $PKG/usr/lib$LIBDIRSUFFIX/*.a

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# include any *.flitevox files the user downloaded.
for file in $CWD/*.flitevox; do
  [ -e "$file" ] && \
    mkdir -p $PKG/usr/share/$PRGNAM && \
    cat $file > $PKG/usr/share/$PRGNAM/"$( basename "$file" )" &&
    EXTRA=yes
done

# -current's tex is texlive, which lacks texi2html. Also lots of
# users prefer to run texlive on 14.2, which has the same problem.
# So only try to build the HTML docs if (a) the user forces with
# HTML=yes, or (b) if HTML=auto (the default) and texi2html is
# actually found on the $PATH.
HTML="${HTML:-auto}"

if [ "$HTML" = "auto" ]; then
  if which texi2html 2>/dev/null; then
    HTML="yes"
  else
    HTML="no"
  fi
fi

# build the docs. NB don't replace subshells with "cd dir" and
# "cd -", as they don't nest.
HTMLDOC=""
if [ "$HTML" = "yes" ]; then
  HTMLDOC="doc/html"
  ( cd doc
    # build the HTML docs.
    make $PRGNAM.html
    ( cd html
  
      # Upstream hardlinks index.html, use a symlink instead.
      rm -f index.html
      ln -s ${PRGNAM}_toc.html index.html
  
      # Also, we don't ship the PDF doc, so link to upstream's.
      # Fix link to source package.
      sed -i \
        -e 's,HREF="flite.pdf",HREF="http://www.festvox.org/flite/doc/flite.pdf",' \
        -e 's,\.tar\.gz,.tar.bz2,g' \
        ${PRGNAM}_toc.html
    )
  )
fi

# 20181114 bkw: always build the GNU info docs.
( cd doc
  makeinfo $PRGNAM.texi
  mkdir -p $PKG/usr/info
  gzip -9c < $PRGNAM.info > $PKG/usr/info/$PRGNAM.info.gz
)

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a ACKNOWLEDGEMENTS COPYING README* $HTMLDOC doc/*.txt doc/alice \
      $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# man page written by SlackBuild author.
mkdir -p $PKG/usr/man/man1
gzip -9c < $CWD/$PRGNAM.1 > $PKG/usr/man/man1/$PRGNAM.1.gz

mkdir -p $PKG/install

# slack-desc gets a note if extra voices are included.
if [ "$EXTRA" = "yes" ]; then
  sed '15s,$, This package includes extra voices in /usr/share/flite/,' \
      $CWD/slack-desc > $PKG/install/slack-desc
else
  cat $CWD/slack-desc > $PKG/install/slack-desc
fi

# doinst.sh needed because we append to /usr/info/dir.
cat $CWD/doinst.sh > $PKG/install/doinst.sh

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