#!/bin/sh

# Slackware build script for GraphicsMagick

# Originally written by Giovanne Castro <giovannefc@terra.com.br>

# 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.

# 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

# 20151127 bkw:
# - fix build on -current, in anticipation of 14.2

PRGNAM=GraphicsMagick
VERSION=${VERSION:-1.3.21}
BUILD=${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.bz2
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 \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

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

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

### Build the perl module

# 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.

cd PerlMagick

# munge Makefile.PL to build using the includes/libs we just installed
# to $PKG, instead of systemwide ones.
sed -i \
  -e "/magick_CFLAGS/s,=',&-I$PKG/usr/include ," \
  -e "/magick_LDFLAGS/s,=',&-L$PKG/usr/lib$LIBDIRSUFFIX ," \
  Makefile.PL

# don't know why we have to explicitly force -lGraphicsMagick here...
perl Makefile.PL \
  LIBS=-lGraphicsMagick \
  PREFIX=/usr \
  INSTALLDIRS=vendor \
  INSTALLVENDORMAN1DIR=/usr/man/man1 \
  INSTALLVENDORMAN3DIR=/usr/man/man3

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 -
### Done with perl module

### Build the tcl module, if & only if GraphicsMagick was already
#   installed system-wide. This means, to get tcl bindings, you have to
#   build twice. You can thank libtool and its .la files (with hard-coded
#   paths) for this stupidity. I could probably spend more time with
#   this and fix it (like the perl stuff above), but I suspect nobody
#   really cares about TclMagick.

GMVER="$(pkg-config --silence-errors --modversion $PRGNAM || true)"
if [ "$GMVER" = "$VERSION" ]; then
  cd TclMagick

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

  LIBS="$TCL_STUB_LIB_FLAG" \
  CFLAGS="$SLKCFLAGS" \
  CXXFLAGS="$SLKCFLAGS" \
  ./configure \
    --prefix=/usr \
    --libdir=/usr/lib${LIBDIRSUFFIX} \
    --mandir=/usr/man \
    --with-magick=/usr/bin/${PRGNAM}Wand-config \
    --with-tcl=/usr/lib$LIBDIRSUFFIX \
    --with-tk=/usr/lib$LIBDIRSUFFIX

  make
  make install DESTDIR=$PKG

  WITHTCL=WITH
  cd -
else
  cat <<EOF
Building without Tcl/Tk bindings. If you need TclMagick, install this
package, then re-run the SlackBuild and reinstall the package. The 2nd
build will include TclMagick.
EOF
  WITHTCL=WITHOUT
fi
### Done with tcl module

find $PKG | xargs 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 $PKG/install
sed "s,@WITHTCL@,$WITHTCL," $CWD/slack-desc > $PKG/install/slack-desc

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