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#!/bin/sh

# Slackware build script for Blocks Runtime Library

# Copyright 2017 Felipe Bugno <capent@yahoo.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=blocksruntime
MSTPRGNAM=compiler-rt
VERSION=${VERSION:-3.8.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

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

if [ "$ARCH" = "x86_64" ]; then
  LIBDIRSUFFIX="64"
fi

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

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $MSTPRGNAM-$VERSION.src
tar -xvf $CWD/$MSTPRGNAM-$VERSION.src.tar.xz
cd $MSTPRGNAM-$VERSION.src

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 {} \;

#We require a config.h to set some variables. Calling cmake just for that below is a overkill

cat > ./lib/BlocksRuntime/config.h << End-of-config
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) /* GCC >= 4.1 */

/* runtime.c ignores these if __WIN32__ or _WIN32 is defined */
#define HAVE_SYNC_BOOL_COMPARE_AND_SWAP_INT 1
#define HAVE_SYNC_BOOL_COMPARE_AND_SWAP_LONG 1

#else /* GCC earlier than version 4.1 */

#error GCC version 4.1 (or compatible) or later is required on non-apple, non-w32 targets

#endif /* GCC earlier than version 4.1 */
End-of-config

#Now, the compiling infrastructure

if [ -z "$CC" ]; then
  if command -v gcc > /dev/null; then
    CC=gcc
  elif command -v clang > /dev/null; then
    CC=clang
  elif command -v cc > /dev/null; then
    CC=cc
  else
    echo "Could not guess name of compiler, please set CC" >&2
    exit 2
  fi
fi

echo "CC=$CC"
: ${AR:=ar}
echo "AR=$AR"
: ${RANLIB:=ranlib}
echo "RANLIB=$RANLIB"

if [ "${CFLAGS+set}" != "set" ]; then
  case "$CC" in
    *gcc*|*clang*)
      CFLAGS="-O2 -fPIC"
      ;;
    *)
      CFLAGS="-O -fPIC"
      ;;
  esac
fi

echo "CFLAGS=$CFLAGS"
set -v

LIB=libBlocksRuntime.a
SRC=./lib/BlocksRuntime
if test -f $LIB; then rm $LIB; fi
"$CC" -c $CFLAGS -o $SRC/data.o $SRC/data.c \
&& "$CC" -c $CFLAGS -o $SRC/runtime.o -I . $SRC/runtime.c \
&& "$AR" cr $LIB $SRC/data.o $SRC/runtime.o \
&& "$RANLIB" $LIB

#Now the install block to prime the package for makepkg

install -d $PKG/usr/include $PKG/usr/lib$LIBDIRSUFFIX
install -m 644 ./lib/BlocksRuntime/Block.h $PKG/usr/include
install -m 755 ./libBlocksRuntime.a $PKG/usr/lib$LIBDIRSUFFIX

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a CREDITS.TXT LICENSE.TXT README.txt CODE_OWNERS.TXT $PKG/usr/doc/$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

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