#!/bin/bash

# Slackware build script for GraphicsMagick

# Originally written by Giovanne Castro <email removed>.

# Updated by B. Watson <urchlay@slackware.uk>, 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.

# 20260803: bkw:
# - fix long-standing issue where GraphicsMagick would fail to build if
#   an old version was already installed. At least, I *think* it's fixed.

# 20260731 bkw: update for v1.3.48.
# 20251216 bkw: update for v1.3.46.
# 20240908 bkw: update for v1.3.45.
# 20240822 bkw: update for v1.3.44.
# 20231108 bkw: update for v1.3.42.
# 20230710 bkw: update for v1.3.40.
# 20230105 bkw: update for v1.3.39, using sourceforge link again.
# 20210910 bkw: update for v1.3.36.
# 20201019 bkw: update for v1.3.35.
# 20200111 bkw: update for v1.3.34, quit using sourceforge dl link.
# 20191130 bkw: update for v1.3.33.
# 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

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

PRGNAM=GraphicsMagick
VERSION=${VERSION:-1.3.48}
BUILD=${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

complain() {
  local rv="$?"
  if pkg-config --silence-errors --modversion $PRGNAM; then
cat <<EOF
**************************************************************************
*                                                                        *
*  This isn't supposed to happen any more, but the build failed and you  *
*  have an old GraphicsMagick package installed. Try removing it:        *
*                                                                        *
*    removepkg GraphicsMagick                                            *
*                                                                        *
*  ...and run this build again. If this fixes the problem, *please*      *
*  contact the maintainer (urchlay@slackware.uk) and let him know!       *
*                                                                        *
**************************************************************************
EOF
  fi
  exit "$rv"
}

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.xz
cd $PRGNAM-$VERSION
chown -R root:root .
find . ! -type l    -a \( \
  \(     -perm /111 -a ! -perm 755 -a -exec chmod -f 755 {} + \) -o \
  \(   ! -perm /111 -a ! -perm 644 -a -exec chmod -f 644 {} + \) \)

# 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 || complain
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 || complain

  # '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

  source /usr/lib$LIBDIRSUFFIX/tclConfig.sh

  # LIBS needed to avoid libTclMagick.so: undefined symbol: tclStubsPtr
  # 20260803 bkw: fix annoying problem where we couldn't build a new
  # GraphicsMagick when an old version was installed. This was caused
  # by TclMagick putting our flags on the gcc command line *after*
  # tcl's.. which include -I/usr/include, which is what broke the build.
  # The fix is to use CC="gcc -I$INC", to force our -I option to appear
  # first in the gcc options (before tcl "helpfully" adds its own).
  LIBS="$TCL_STUB_LIB_FLAG -L$PKG/usr/lib$LIBDIRSUFFIX" \
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  CC="gcc -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 || complain
  ../rungm.sh make install INSTALL=$( which install ) DESTDIR=$PKG

  WITHTCL=WITH
  cd -
fi
### Done with tcl module

gzip -9 $PKG/usr/man/man*/*

rm -f $PKG/usr/lib*/*.la* $PKG/usr/lib*/Tcl*/*.la

find $PKG/usr/lib* $PKG/usr/bin -type f -print0 | \
  xargs -0 file -m /etc/file/magic/elf | grep ELF | cut -f 1 -d : | \
  xargs strip --strip-unneeded 2> /dev/null || true

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

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