#!/bin/sh

# Slackware build script for GraphicsMagick

# Originally written by Giovanne Castro <email removed>.

# Updated by B. Watson <yalhcru@gmail.com>, as the original author is
# MIA. Original version had no license; I'm licensing the update under the
# terms of the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# 20181201 bkw:
# - update for v1.3.31 (BUILD=1 again).

# 20181126 bkw:
# - fix the perl module. at one point it really did work, but lately
#   people (including me) were getting 'undefined symbol' errors when
#   trying to load the perl module (e.g. by running findimagedupes).
#   Thanks to Kevin Smallman for a very helpful bug report.
# - update find/chmod stuff to my personal template.
# - BUILD=2

# 20180627 bkw:
# - updated for v1.3.30.
# - get rid of the need to build/install/build again for the Tcl bindings.
# - actually install the damn perl module (when did *that* break?)
# - get rid of static tcl/tk libs
# - get rid of --disable-openmp (but add OPENMP=no just in case)

# 20180123 bkw: updated for v1.3.28
# 20171219 bkw: updated for v1.3.27, added last few missing delegates
# 20170708 bkw: updated for v1.3.26
# 20161016 bkw: updated for v1.3.25
# 20151127 bkw: fix build on -current, in anticipation of 14.2

# 20150803 bkw:
# - updated for v1.3.21
# - install docs to /usr/doc/$PRGNAM-$VERSION, not /usr/share/doc
# - build perl bindings (PerlMagick)
# - build Tcl bindings (TclMagick)
# - document optional deps in README

PRGNAM=GraphicsMagick
VERSION=${VERSION:-1.3.31}
BUILD=${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

OLDVER="$(pkg-config --silence-errors --modversion $PRGNAM || true)"
if [ "$OLDVER" != "" ]; then
  cat <<EOF 1>&2
************************************************************************
*
* $PRGNAM is already installed (version $OLDVER).
*
* If the build fails, 'removepkg $PRGNAM' and try again.
*
* Don't say I didn't warn you.
*
************************************************************************
EOF
  sleep 3
fi


rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.bz2
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 {} \+

# libfpx isn't autodetected, so let's help it a bit:
if [ -e /usr/include/fpxlib.h ]; then
  FPXOPT=yes
else
  FPXOPT=no
fi

# 20180628 bkw: OpenMP seems to work OK now, so enable it by default. In
# fact it may have worked in GraphicsMagick all along: I copied the
# config arguments from Pat's SlackBuild for ImageMagick... But since
# I haven't done exhaustive testing, make it possible to disable:
if [ "${OPENMP:-yes}" = "yes" ]; then
  OMPOPT=--enable-openmp
  WITHOMP=WITH
else
  OMPOPT=--disable-openmp
  WITHOMP=WITHOUT
fi

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \
./configure \
  $OMPOPT \
  --prefix=/usr \
  --libdir=/usr/lib${LIBDIRSUFFIX} \
  --mandir=/usr/man \
  --docdir=/usr/doc/$PRGNAM-$VERSION \
  --program-prefix= \
  --with-x \
  --with-frozenpaths=no \
  --without-modules \
  --enable-static=no \
  --enable-shared \
  --with-perl \
  --with-quantum-depth=16 \
  --with-fpx=$FPXOPT \
  --build=$ARCH-slackware-linux

make INSTALLDIRS=vendor
make install INSTALLDIRS=vendor DESTDIR=$PKG

### Build the perl module, if not disabled.

# In the olden days, PerlMagick was a separate module, not part of
# GraphicsMagick, and it had its own SlackBuild. These days, PerlMagick
# is integrated into the GraphicsMagick source. Supposedly, PerlMagick
# has to be built after GraphicsMagick is installed system-wide, but
# I've come up with functional (if unattractive) way around that.
# 20181126 bkw: ...which stopped working with 1.3.30. Updated this
# so it works again, and as a side effect, it's slightly less repulsive
# to look at.

WITHPERL=WITHOUT
if [ "${PERL:-yes}" = "yes" ]; then
  cd PerlMagick

  perl Makefile.PL \
    PREFIX=/usr \
    INSTALLDIRS=vendor \
    INSTALLVENDORMAN1DIR=/usr/man/man1 \
    INSTALLVENDORMAN3DIR=/usr/man/man3

  sed -i "/^LDDLFLAGS/s,\$, -L$PKG/usr/lib$LIBDIRSUFFIX -l$PRGNAM," Makefile

  make

  # 'make test' will attempt to display an image, if it thinks it's running
  # in X. Let's not do this. Also, use the shared libs in $PKG.
  # The rungm.sh script sets up the environment so GraphicsMagick will look
  # for its support files in the source tree instead of /usr.
  DISPLAY="" \
  LD_PRELOAD="$PKG/usr/lib$LIBDIRSUFFIX/lib$PRGNAM.so" \
    ../rungm.sh make test

  make install DESTDIR=$PKG

  cd -
  WITHPERL=WITH
fi
### Done with perl module

### Build the tcl module, if not disabled.

WITHTCL=WITHOUT
if [ "${TCL:-yes}" = "yes" ]; then
  # 20180627 bkw: the TclMagick build chokes on the .la file.
  # In 15.0, we will be removing all .la files. For 14.2, I'll
  # temporarily rename it out of the way.
  # You can thank libtool and its .la files (with hard-coded
  # paths) for this stupidity.

  rename .la .la_renamed $PKG/usr/lib$LIBDIRSUFFIX/*.la

  INC=$(pwd)

  cd TclMagick

  # LIBS needed to avoid libTclMagick.so: undefined symbol: tclStubsPtr
  source /usr/lib$LIBDIRSUFFIX/tclConfig.sh

  LIBS="$TCL_STUB_LIB_FLAG -L$PKG/usr/lib$LIBDIRSUFFIX" \
  CFLAGS="$SLKCFLAGS -I$INC" \
  CXXFLAGS="$SLKCFLAGS -I$INC" \
  ../rungm.sh ./configure \
    --with-magick=$(pwd)/../wand/GraphicsMagickWand-config \
    --prefix=/usr \
    --libdir=/usr/lib${LIBDIRSUFFIX} \
    --mandir=/usr/man \
    --enable-shared \
    --disable-static \
    --with-tcl=/usr/lib$LIBDIRSUFFIX \
    --with-tk=/usr/lib$LIBDIRSUFFIX

  ../rungm.sh make
  ../rungm.sh make install INSTALL=$( which install ) DESTDIR=$PKG

  WITHTCL=WITH
  cd -
  rename .la_renamed .la $PKG/usr/lib$LIBDIRSUFFIX/*.la_renamed
fi
### Done with tcl module

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

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

find $PKG -name perllocal.pod \
  -o -name ".packlist" \
  -o -name "*.bs" \
  | xargs rm -f

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

mkdir -p $PKG/install
sed \
  -e "s,@WITHOMP@,$WITHOMP," \
  -e "s,@WITHTCL@,$WITHTCL," \
  -e "s,@WITHPERL@,$WITHPERL," \
  $CWD/slack-desc > $PKG/install/slack-desc

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