#!/bin/sh
set -e				# exit on any error

APPNAME='linuxcnc'
VERSION=${VERSION:-'2.7.15'}
ARCH=""				# will test later, or put your own
BUILD=${BUILD:-1}
TAG=${TAG:-'_vii'}

# Setting paths:	
CWD=$(pwd)
OUTPUT=$CWD			# tar.gz goes to current directory 
[ "$TMP" = "" ] && TMP=/tmp	# set to /tmp if $TMP is empty

# The installation directory of the package: 
PKG=$TMP/package-$APPNAME-$VERSION

# Delete the leftover directories if they exist (due to a previous
# build) and (re)create the packaging directory
rm -rf $PKG 
mkdir -p $TMP $PKG
rm -rf $TMP/$APPNAME-$VERSION

cd $TMP				# change to the TMP directory

## Getting the sources.
##
## 1. either by cloning the repository:
#SOURCE_DIR="$APPNAME-$VERSION"
#GIT_REPO="https://github.com/LinuxCNC/$APPNAME.git" 
#git clone $GIT_REPO $SOURCE_DIR
#cd $SOURCE_DIR
## checking out our version:
#git checkout v$VERSION		# for example checkout v2.7.15
#git pull

# 2. or downloading the archive:
wget -c https://github.com/LinuxCNC/$APPNAME/archive/v$VERSION.tar.gz
tar xvzf v$VERSION.tar.gz
SOURCE_DIR=$APPNAME-$VERSION
# Eng getting the sorces.

cd $SOURCE_DIR

## Version check:
#[ `cat VERSION` = $VERSION ] || echo "Version mismatch!"; exit 1 

cd src				# changing to compiling directory

# Fixing the linkage issue (github.com/LinuxCNC/linuxcnc/issues/181):
sed -i 's/LIBREADLINE=-lreadline/LIBREADLINE=$(READLINE_LIBS)/' \
    emc/sai/Submakefile
# Fixing module_helper (adding rtai_shm to the module_whitelist[]:
sed -i 's/\("rtai_smi",\)/\1 "rtai_shm", /' \
    module_helper/module_helper.c

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
      i386) ARCH=i386 ;;
      i486) ARCH=i486 ;;
      i586) ARCH=i586 ;;
      i686) ARCH=i686 ;;
      x86_64) ARCH=x86_64;;
      arm*) ARCH=arm ;;
      # Unless $ARCH is set, use uname -m for all other archs:
      *) ARCH=$( uname -m ) ;;
    esac
fi

if [ "$ARCH" = "i386" ]; then
    SLKCFLAGS="-O2 -march=i386 -mtune=i686"
elif [ "$ARCH" = "i486" ]; then
    SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "i586" ]; then
    SLKCFLAGS="-O2 -march=i586 -mtune=i686"
elif [ "$ARCH" = "i686" ]; then
    SLKCFLAGS="-O2 -march=i686 -mtune=i686"
elif [ "$ARCH" = "x86_64" ]; then
    SLKCFLAGS="-O2 -fPIC"
else
    SLKCFLAGS="-O2"
fi

# Building the thing:
./autogen.sh

CFLAGS="$SLKCFLAGS" \
  ./configure \
  --prefix=/usr \
  --libdir=/usr/lib \
  --sysconfdir=/etc \
  --localstatedir=/var \
  --mandir=/usr/man \
  --docdir=/usr/doc/$APPNAME-$VERSION \
  --enable-shared \
  --disable-static \
  --enable-non-distributable=yes \
  --with-realtime=/usr/realtime \
  --with-x \
  --build=$ARCH-slackware-linux \
  --host=$ARCH-slackware-linux 
make clean
make
make setuid
make install DESTDIR=$PKG

# Create the install directory and copy the slack-desc into it
mkdir -p $PKG/install

cat <<EOT >> $PKG/install/slack-desc
linuxcnc: linuxcnc (CNC machine controller)
linuxcnc:
linuxcnc: LinuxCNC controls CNC machines. It can drive milling machines,
linuxcnc: lathes, 3d printers, laser cutters, plasma cutters, robot arms,
linuxcnc: hexapods, and more.
linuxcnc:
linuxcnc: http://linuxcnc.org
linuxcnc:
linuxcnc:
linuxcnc:
linuxcnc:
EOT

# Reserved for doinst.sh

# Build the package
cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$APPNAME-$VERSION-$ARCH-$BUILD$TAG.tgz