dnl 
dnl xps
dnl 
dnl $Id: configure.in 2007-07-14 $
dnl
dnl Generate a "configure" script that check for installation of the
dnl ROOT framework.
dnl
dnl    USAGE:  autoconf
dnl
dnl note: adapted from config.in file of package ROracle
dnl

AC_INIT(src/rwrapper.cxx)

# See "Writing R Extensions"
: ${R_HOME=`R RHOME`}
if test -z "${R_HOME}"; then
   echo "could not determine R_HOME"
   exit 1
fi
CC=`"${R_HOME}/bin/R" CMD config CC`
CFLAGS=`"${R_HOME}/bin/R" CMD config CFLAGS`
AC_PROG_CPP
AC_PROG_CC

# check if ROOT is installed in fixed location:
if test -z "${ROOTSYS}"; then
   AC_CHECK_PROG(rootfound, [root-config --prefix], yes, no)
   if test "$rootfound" = "yes"; then
       echo "found ROOT version `root-config --version` in directory `root-config --prefix`"
      exit 0
   fi
fi

# else check if ROOT PATH variables are defined:
# check for ROOTSYS:
if test -z "${ROOTSYS}"; then
   echo ""
   echo "${R_PACKAGE_NAME} configuration error:"
   echo ""
   echo "   You must set the shell variable ROOTSYS to the"
   echo "   directory where ROOT resides and re-run R CMD INSTALL"
   echo "   e.g., (using Bourne shell syntax):"
   echo ""
   echo "      export ROOTSYS=/opt/root"
   echo '      export "PATH=$ROOTSYS/bin:$PATH" '
   echo "      R CMD INSTALL ${R_PACKAGE_NAME}"
   echo ""
   echo "   Please consult the README file for more information"
   echo ""
   exit 1
else
   echo "found ROOT version `root-config --version` in directory `root-config --prefix`"
fi

# check for LD_LIBRARY_PATH:
if test -z "${LD_LIBRARY_PATH}"; then
   echo ""
   echo "${R_PACKAGE_NAME} configuration error:"
   echo ""
   echo "   You must set the shell variable LD_LIBRARY_PATH to the"
   echo "   directory where ROOT resides and re-run R CMD INSTALL"
   echo "   e.g., (using Bourne shell syntax):"
   echo ""
   echo '      export "LD_LIBRARY_PATH=$ROOTSYS/lib:$LD_LIBRARY_PATH" '
   echo "      R CMD INSTALL ${R_PACKAGE_NAME}"
   echo ""
   echo "   Please consult the README file for more information"
   echo ""
   exit 1
fi

# for MacOS X check for DYLD_LIBRARY_PATH:
OS=`uname`
if test "${OS}" = Darwin; then 
   if test -z "${DYLD_LIBRARY_PATH}"; then
      echo ""
      echo "${R_PACKAGE_NAME} configuration error:"
      echo ""
      echo "   You must set the shell variable DYLD_LIBRARY_PATH to the"
      echo "   directory where ROOT resides and re-run R CMD INSTALL"
      echo "   e.g., (using Bourne shell syntax):"
      echo ""
      echo '      export "DYLD_LIBRARY_PATH=$ROOTSYS/lib:$DYLD_LIBRARY_PATH" '
      echo "      R CMD INSTALL ${R_PACKAGE_NAME}"
      echo ""
      echo "   Please consult the README file for more information"
      echo ""
      exit 1
   fi
fi

exit 0