#!/bin/bash

# Slackware build script for f2c

# Copyright 2017, Judah Milgram, Washington DC
# 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.

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

PRGNAM=f2c
VERSION=${VERSION:-20160102} # This is the f2c version, not libf2c.
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
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 [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -fPIC -DNON_UNIX_STDIO -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -fPIC -DNON_UNIX_STDIO -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC -DNON_UNIX_STDIO"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2 -fPIC -DNON_UNIX_STDIO"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION

mkdir -p $PRGNAM-$VERSION/libf2c
cd $PRGNAM-$VERSION/libf2c
unzip $CWD/libf2c.zip

cd $TMP/$PRGNAM-$VERSION
tar xfvz $CWD/src.tgz

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 {} \;

# make libf2c:
cd $TMP/$PRGNAM-$VERSION/libf2c
make CFLAGS="${SLKCFLAGS}" -f makefile.u

# install libf2c:
mkdir -p $PKG/usr/lib
make -f makefile.u LIBDIR=$PKG/usr/lib install

# make f2c:
cd $TMP/$PRGNAM-$VERSION/src
make CFLAGS="${SLKCFLAGS}" -f makefile.u

# install f2c:
mkdir -p $PKG/usr/bin
mkdir -p $PKG/usr/include
install -s f2c $PKG/usr/bin
install f2c.h $PKG/usr/include

# strip binaries:
strip --strip-unneeded $PKG/usr/lib/libf2c.a
strip --strip-unneeded $PKG/usr/bin/f2c

# install f2c man page:
cd $TMP
mkdir -p $PKG/usr/man/man1
install $PRGNAM-$VERSION/src/f2c.1 $PKG/usr/man/man1/f2c.1
gzip -9 $PKG/usr/man/man1/f2c.1

# install docs:
cd $TMP
mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $PRGNAM-$VERSION/src/Notice $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $PRGNAM-$VERSION/src/README $PKG/usr/doc/$PRGNAM-$VERSION/README.f2c
cp -a $PRGNAM-$VERSION/src/changes $PKG/usr/doc/$PRGNAM-$VERSION
cp -a $PRGNAM-$VERSION/libf2c/README $PKG/usr/doc/$PRGNAM-$VERSION/README.libf2c
cat $CWD/fc > $PKG/usr/doc/$PRGNAM-$VERSION/fc
cat $CWD/f2c.pdf > $PKG/usr/doc/$PRGNAM-$VERSION/f2c.pdf
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# Copy the slack-desc into ./install
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

# Make the package
cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE