makepkglinks

#!/bin/sh

# makepkglinks: make symlinks to packages
#
#  Copyright (C) 2002
#  ASTRON (Netherlands Foundation for Research in Astronomy)
#  P.O.Box 2, 7990 AA Dwingeloo, The Netherlands, seg@astron.nl
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#  $Id$


# This script is used by lofar_package.m4 to create symlinks for
# packages used by the given package.
# It also writes the used libraries in a depfile which can be used to
# generate the library dependencies.
# It writes lines into lofar_config.h containing HAVE_LOFAR_PACKAGE
# definitions which can be used in source code.
# It is all done in a recursive way.
#
# usage:
#  makepkglinks pkgname incdir libdir pkginc pkglib depfile conffile
#               option count

# The package name is the last part of the full package name.
# The library name is the lowercase version of the package name.
# option=0 means that makepkglinks descends recursively into
#          all packages used by this package.
# option=1 means not recursively
# option=2 means not recursively, no library in depfile, and no
#          HAVE lines in config file
#
# count is used to determine if endless recursion is taking place
# (e.g. if packages include each other).

fullnm=$1
pkgnm=`echo $fullnm | sed -e "s%.*/%%g"`
upkgnm=`echo $pkgnm | tr a-z A-Z`
libnm=`echo $pkgnm | tr A-Z a-z`
incdir=$2
if [ -d $incdir ]; then
  incdir=`cd $incdir  &&  pwd`
fi
libdir=$3
if [ -d $libdir ]; then
  libdir=`cd $libdir  &&  pwd`
fi
inclin=$4
liblin=$5
libdep=$6
conffile=$7
option=$8
count=$9

# The count is used to detect mutual dependencies
if [ "$count" -gt 25 ]; then
  echo "Mutual package dependencies found for package $fullnm"
  exit 1;
fi

# Remove the full package name from the include and library path to be able
# to derive the library path of subpackages from it.
incdir1=`echo $incdir | sed -e "s%/$fullnm/.*%%" -e "s%/$fullnm$%%"`
incdir2=`echo $incdir | sed -e "s%.*/$fullnm%%"`
libdir1=`echo $libdir | sed -e "s%/$fullnm/.*%%" -e "s%/$fullnm$%%"`
libdir2=`echo $libdir | sed -e "s%.*/$fullnm%%"`

# Create symlink to the include directory and to the build directory
\rm -f $inclin/$pkgnm
ln -s $incdir/src $inclin/$pkgnm
\rm -f $liblin/$pkgnm
ln -s $libdir/src $liblin/$pkgnm

if [ "$option" != 2 ]; then
  echo "$libdir/src/lib$libnm.la" >> $libdep;
  echo "" >> $conffile
  echo "#if !defined(HAVE_LOFAR_$upkgnm)" >> $conffile;
  echo "# define HAVE_LOFAR_$upkgnm 1" >> $conffile;
  echo "#endif" >> $conffile;
fi

# Make symlinks to packages used by this package.
if [ "$option" = "0" ]; then
  confs=`find $incdir1/$fullnm -name configure.in -print`
  for conf in $confs
  do
    pkgs=`grep "^[ \t]*lofar_PACKAGE[ \t]*(.*)" $conf`
    for pkg in $pkgs
    do
      # Only keep package name possibly followed by ,option.
      nm=`echo $pkg | sed -e "s/.*lofar_PACKAGE//" -e "s/ //g" -e "s/.*(//" -e "s/).*//"`
      # Check if the package has to be examined recursively.
      opt=`echo $nm | sed -e "s/.*,//"`
      if [ "$opt" = ""  -o  "$opt" = "$nm" ]; then
        opt=$option;
      fi
      nm=`echo $nm | sed -e "s/,.*//"`
      cnt=`expr $count + 1`
      $0 $nm $incdir1/$nm$incdir2 $libdir1/$nm$libdir2 $inclin $liblin $libdep $conffile $opt $cnt  ||  exit 1
    done
  done
fi