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#!/bin/sh

# Slackware build script for sage
# Written by Jack Maddox <jack@auburn.edu>
# Currently maintained by Christopher L Duston <christopher.duston@protonmail.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=sage
VERSION=${VERSION:-9.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

#### These lines are to ensure the build can happen on multilib systems.
if [ "$ARCH" = "i586" ]; then
LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
LIBDIRSUFFIX="64"
else
LIBDIRSUFFIX=""
fi
####

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

SAGEROOT=${SAGEROOT:-/opt/sage}

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
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 \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
 -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

mkdir -p $PKG/$SAGEROOT $PKG/usr/share/{applications,pixmaps} \
         $PKG/usr/doc/$PRGNAM-$VERSION $PKG/etc/profile.d

# Added freeBSD patch to build as root, thanks to Heinz for pointing it
patch -p0 < $CWD/pynac.patch

# Added more patch to build as root.
patch -p1 < $CWD/sage-build-root.patch

# Thanks to Philip Lacroix <slackph@posteo.de>
rm build/pkgs/python2/patches/sys_path_security-issue_16202.patch

# Test Fix - this did not work.
# sed -i "s|/lib|/lib${LIBDIRSUFFIX}|" build/pkgs/iml/spkg-install



# The docs do not build correctly, so instead of make, do the following:
LDFLAGS="-L/usr/lib${LIBDIRSUFFIX}" \
make build

# test all examples in the documentation (over 93,000 line of input)
[ "${TEST:-no}" = "yes" ] && make test

# build the pdf version of the documentation
# (Note: this requires a LaTeX installation)
if [ "${PDFDOC:-no}" = "yes" ]; then
  ./sage -docbuild all pdf
  cp -av devel/sage/doc/output/pdf $PKG/usr/doc/$PRGNAM-$VERSION
fi

# install optional packages as defined by the OPTIONALSPKG flag
OPTIONALSPKG=${OPTIONALSPKG:-no}
if [ "$OPTIONALSPKG" != "no" ]; then
    for i in ${OPTIONALSPKG}; do
        ./sage -i $(./sage -optional | grep ${i})
    done
fi

cp -av * $PKG/$SAGEROOT
rm -rf $PKG/$SAGEROOT/{upstream,logs}

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

# Add profile scripts
sed "s%SAGEROOT%${SAGEROOT}%" $CWD/profile.d/sage.sh > $PKG/etc/profile.d/sage.sh
sed "s%SAGEROOT%${SAGEROOT}%" $CWD/profile.d/sage.csh > $PKG/etc/profile.d/sage.csh
chmod 0755 $PKG/etc/profile.d/*

# install scripts to SAGEROOT/bin that allow the internal sage versions of: gap,
# gp, singular, maxima, M2, kash, mwrank, ipython, hg, and R to be run independently
# and add SAGEROOT/bin to the PATH
if [ "${INSTALLSCRIPTS:-no}" = "yes" ]; then
  mkdir $PKG$SAGEROOT/bin
  echo "install_scripts('$PKG$SAGEROOT/bin')" | ./sage
  sed -i 's%$PATH:${SAGE_ROOT}%$PATH:${SAGE_ROOT}:${SAGE_ROOT}/bin%' $PKG/etc/profile.d/sage.sh
  sed -i 's%$path ${SAGE_ROOT}%$path ${SAGE_ROOT} ${SAGE_ROOT}/bin%' $PKG/etc/profile.d/sage.csh
fi

sed "s%SAGEROOT%${SAGEROOT}%" $CWD/$PRGNAM-notebook.desktop > $PKG/usr/share/applications/$PRGNAM-notebook.desktop
cp src/doc/common/themes/sage/static/sageicon.png $PKG/usr/share/pixmaps/

# Put a line here which *actually* adds sage to the path

# install sagetex to a location that is accessible to the system TeX installation
cp -a local/share/texmf $PKG/usr/share

cp -a COPYING.txt README.md $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
sed "s%SAGEROOT%${SAGEROOT}%" $CWD/doinst.sh > $PKG/install/doinst.sh

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