#!/usr/bin/env bash
#
# Shell script to make a FPC .tar package for Linux
# Copyright 1996-2004 Michael Van Canneyt and Peter Vreman
#

set -e

# Set this to "yes" if you want to force making the documentation.
# if it is not equal to yes, the documentation is assumed present in a file doc-pdf.tar.gz
MAKEDOCS=no

# Set this to "no" if you want don't want to check for libgdb.a
if [ "$CHECKLIBGDB" = "" ]; then
  CHECKLIBGDB=yes
fi

# avoid abort of script if FPCDIR isn't set
FPCDIR=dummy
unset FPCDIR

# Goto the toplevel if necessary
[ -d install ] || cd ..

# Retrieve version from fpcsrc/Makefile.fpc
FULLVERSION=`grep '^version' fpcsrc/Makefile.fpc | sed 's+[^=]*= *\(.*\)+\1+'`
VERSION=`grep '^version' fpcsrc/Makefile.fpc | sed 's+[^=]*= *\([0-9\.]*\).*+\1+'`

# Retrieve current system info by calling FPC. We need
# to use the | head -n1 to fix a bug in fpc 1.9.4 and earlier
# that uses exitcode 1 also when printing info resulting in
# fpc binary to print an error line (PFV)
SOURCECPU=`fpc -iSP | head -n1`
SOURCEOS=`fpc -iSO | head -n1`

# retrieve real OS.
HOSTOS=`uname -s | tr "[:upper:]" "[:lower:]"`

MAKE=make

case "$HOSTOS" in
 *freebsd*) MAKE=gmake
	EXTRAOPT="-Fl/usr/local/lib -Fl/usr/X11R6/lib  -dFREEBSD5"
  ;;
esac

if [ $# -ne 0 ]; then
  if [ $# -ne 1 ]; then
    echo "Usage: makepack [<cpu>-<os>]"
    exit 1
  fi
  TARGETCPU=`echo $1 | sed 's+\([^-]*\)-.*+\1+'`
  TARGETOS=`echo $1 | sed 's+[^-]*-\(.*\)+\1+'`
else
  TARGETCPU=$SOURCECPU
  TARGETOS=$SOURCEOS
fi

FULLTARGET=$TARGETCPU-$TARGETOS
FULLSOURCE=$SOURCECPU-$SOURCEOS

echo "FPC Source: $FULLSOURCE"
echo "FPC Target: $FULLTARGET"

# Cross building
#  - add prefix
#  - no IDE
if [ "$FULLTARGET" != "$FULLSOURCE" ]; then
   CROSS="cross"
   CROSSPREFIX=$FULLTARGET-
   IDE=
else
   CROSS=
   CROSSPREFIX=
   IDE=ide
fi


# Check for libgdb.a
if [ "$CROSS" = "" ]; then
  if [ "$CHECKLIBGDB" = "yes" ]; then
    if [ "$GDBLIBDIR" = "" ]; then
      GDBLIBDIR=fpcsrc/libgdb/$TARGETOS/$TARGETCPU
    fi
    if [ ! -e "$GDBLIBDIR/libgdb.a" ]; then
      echo "Libgdb ($GDBLIBDIR/libgdb.a) not found, aborting"
      exit 1
    fi
  else
    NOGDB=1
  fi
fi

# First check for doc-pdf.tar.gz before building anything
if [ "$CROSS" = "" ]; then
  if [ ! -f doc-pdf.tar.gz ]; then
    if [ "$MAKEDOCS" != "yes" ]; then
      echo "No documentation available. Please copy the file doc-pdf.tar.gz to this directory."
      exit 1
    else
      ${MAKE} makepackdocs
      if [ $? != 0 ]; then
        echo "Failed to make documentation archive."
        exit 1
      fi
    fi
  fi
  ${MAKE}  demozip CPU_TARGET=$TARGETCPU OS_TARGET=$TARGETOS FPC_VERSION=$VERSION MAKEPACK=1
  if [ $? != 0 ]; then
    echo "Failed to make demo source archive."
    exit 1
  fi
fi

# check existence of binutils if cross packing
if [ ! "$CROSS" = "" ]; then
  if [ ! -f binutils-${CROSSPREFIX}$FULLSOURCE.tar.gz ]; then
    echo "No cross binutils available: binutils-${CROSSPREFIX}$FULLSOURCE.tar.gz missing."
    exit 1
  fi
fi

# Build everything using the makefiles
${MAKE} distclean CPU_TARGET=$TARGETCPU OS_TARGET=$TARGETOS
${MAKE} ${CROSS}zipinstall CPU_TARGET=$TARGETCPU OS_TARGET=$TARGETOS OPT="${EXTRAOPT}" FPC_VERSION=$VERSION
if [ $? != 0 ]; then
  echo "Failed to make distribution archive."
  exit 1
fi

# Files to be in the release
RELFILES="install.sh"

# install.sh
echo "Copying install.sh"
sed -e s+%version%+$VERSION+ -e s+%fullversion%+$FULLVERSION+ install/install.sh > install.sh
chmod 755 install.sh

# readme.txt
cp install/doc/readme.txt .
chmod 644 readme.txt

# binary.*.tar
BINARYTAR=${CROSSPREFIX}binary.$FULLSOURCE.tar
echo "Creating $BINARYTAR"
BINPACKAGES="base $IDE units utils"
BINFILES=
for p in $BINPACKAGES; do
  BINFILES="$BINFILES ${CROSSPREFIX}$p*.$FULLSOURCE.tar.gz"
done
tar cf $BINARYTAR $BINFILES
if [ $? != 0 ]; then
  echo "Failed to create $BINARYTAR"
  exit 1
fi
RELFILES="$RELFILES $BINARYTAR"

if [ "$CROSS" = "" ]; then
  # no cross packing
  # demo, docs
  RELFILES="$RELFILES demo.tar.gz doc-pdf.tar.gz"
else
  # cross packing
  # add cross binutils 
  RELFILES="$RELFILES binutils-${CROSSPREFIX}$FULLSOURCE.tar.gz"
fi

# Files to be added to the .tar
DIRNAME=${CROSSPREFIX}fpc-$FULLVERSION.$FULLSOURCE
TARNAME=${DIRNAME}.tar
echo "Creating $TARNAME"
mkdir $DIRNAME
mv $RELFILES $DIRNAME
tar cf $TARNAME $DIRNAME
if [ $? != 0 ]; then
  echo "Failed to create $TARNAME"
  exit 1
fi