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#! /bin/sh
#
# Copyright by The HDF Group.
# Copyright by the Board of Trustees of the University of Illinois.
# All rights reserved.
#
# This file is part of HDF5.  The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
#

############################################################################
##                                                                        ##
## Things You May Have to Modify:                                         ##
##                                                                        ##
## If the following paths don't point to the place were HDF5 is installed ##
## on your system (i.e., you received a binary distribution or moved the  ##
## files from the originally installed directory to another directory)    ##
## then modify them accordingly to represent the new paths.               ##
##                                                                        ##
############################################################################
prefix="/usr"
exec_prefix="${prefix}"
libdir="${prefix}/lib/x86_64-linux-gnu"
libdevdir="${prefix}/lib/x86_64-linux-gnu/hdf5/serial"
includedir="${prefix}/include/hdf5/serial"
HL="hl"

############################################################################
##                                                                        ##
## Things You Can Modify to Override HDF5 Library Build Components:       ##
##                                                                        ##
## (Advanced usage - know what you're doing - you're on your own here.)   ##
## The three variables below can be used to insert paths and flags in     ##
## FCFLAGS, LDFLAGS, or LIBS in the h5fc compile line:                    ##
##    $FLINKER $FCFLAGS $H5BLD_FCFLAGS $F9XSUFFIXFLAG $LDFLAGS $LIBS      ##
##    $fmodules $link_objs $link_args $shared_link                        ##
##                                                                        ##
## These settings can be overriden by setting HDF5_FCFLAGS,               ##
## HDF5_LDFLAGS, or HDF5_LIBS in the environment.                         ##
##                                                                        ##
############################################################################
FCFLAGSBASE=""
LDFLAGSBASE=""
LIBSBASE=""

############################################################################
##                                                                        ##
## You shouldn't have to modify anything below this line.                 ##
##                                                                        ##
############################################################################

# Constants definitions
EXIT_SUCCESS=0
EXIT_FAILURE=1

host_os="linux-gnu"

prog_name="`basename $0`"

allargs=""
compile_args=""
link_args=""
link_objs=""

do_link="yes"
do_compile="no"
dash_o="no"
dash_c="no"
get_output_file="no"

SHOW="eval"
FCBASE="gfortran"
FLINKERBASE="gfortran"

# FCFLAGS and LDFLAGS are reserved for use by the script user.
# FLAGS brought from the hdf5 build are put in H5BLD_*FLAGS.

# User's FCFLAGS come after their H5BLD counterparts. User's LDFLAGS come just
# before clibpath, user's LIBS come after $link_objs and before the hdf5
# libraries in $link_args, followed by any external library paths and libraries
# from AM_LDFLAGS, LDFLAGS, AM_LIBS or LIBS carried in from the hdf5 build.
# The order of the flags is intended to give precedence to the user's flags.
H5BLD_FCFLAGS=" "
F9XMODFLAG="-I"
F9XSUFFIXFLAG=""
H5BLD_LDFLAGS=" "
H5BLD_LIBS="-lcrypto -lcurl -lpthread -lsz -lz -ldl -lm "

FC="${HDF5_FC:-$FCBASE}"
FLINKER="${HDF5_FLINKER:-$FLINKERBASE}"
FCFLAGS="${HDF5_FCFLAGS:-$FCFLAGSBASE}"
LDFLAGS="${HDF5_LDFLAGS:-$LDFLAGSBASE}"
LIBS="${HDF5_LIBS:-$LIBSBASE}"

# If a static library is available, the default will be to use it.  If the only
# available library is shared, it will be used by default.  The user can
# override either default, although choosing an unavailable library will result
# in link errors.
STATIC_AVAILABLE="yes"
if test "${STATIC_AVAILABLE}" = "yes"; then
  USE_SHARED_LIB="${HDF5_USE_SHLIB:-no}"
else
  USE_SHARED_LIB="${HDF5_USE_SHLIB:-yes}"
fi

usage() {
  # A wonderfully informative "usage" message.
  echo "usage: $prog_name [OPTIONS] <compile line>"
  echo "  OPTIONS:"
  echo "    -help        This help message."
  echo "    -echo        Show all the shell commands executed"
  echo "    -prefix=DIR  Prefix directory to find HDF5 lib/ and include/"
  echo "                   subdirectories [default: $prefix]"
  echo "    -show        Show the commands without executing them"
  echo "    -showconfig  Show the HDF5 library configuration summary"
  echo "    -shlib       Compile with shared HDF5 libraries [default for hdf5 built"
  echo "                                                     without static libraries]"
  echo "    -noshlib     Compile with static HDF5 libraries [default for hdf5 built"
  echo "                                                     with static libraries]"
  echo " "
  echo "  <compile line>  - the normal compile line options for your compiler."
  echo "                    $prog_name uses the same compiler you used to compile"
  echo "                    HDF5. Check with your compiler's man pages for more"
  echo "                    information on which options are needed."
  echo " "
  echo " You can override the compiler and linker to compile your program by"
  echo " setting the following environment variables accordingly:"
  echo " "
  echo "   HDF5_FC                  -  use a different Fortran 90 or 95 compiler"
  echo "   HDF5_FLINKER             -  use a different linker"
  echo "   HDF5_USE_SHLIB=[yes|no]  -  use shared or static version of the HDF5 library"
  echo "                                 [default: no except when built with only"
  echo "                                           shared libraries]"
  echo " "
  echo " You can also add or change paths and flags to the compile line using"
  echo " the following environment varibles or by assigning them to their counterparts"
  echo " in the 'Things You Can Modify to Override...'" section of $prog_name
  echo " "
  echo "  Variable              Current value to be replaced"
  echo "  HDF5_FCFLAGS          \"$CFLAGSBASE\""
  echo "  HDF5_LDFLAGS          \"$LDFLAGSBASE\""
  echo "  HDF5_LIBS             \"$LIBSBASE\""
  echo " "
  echo " Note that adding library paths to HDF5_LDFLAGS where another hdf5 version"
  echo " is located may link your program with that other hdf5 library version."
  echo " "
  exit $EXIT_FAILURE
}

# Show the configuration summary of the library recorded in the
# libhdf5.settings file reside in the lib directory.
showconfigure()
{
  cat ${libdir}/libhdf5_serial.settings
  status=$?
}

# Main
status=$EXIT_SUCCESS

if test "$#" = "0"; then
  # No parameters specified, issue usage statement and exit.
  usage
fi

for arg in $@ ; do
  if test "x$get_output_file" = "xyes"; then
    link_args="$link_args $arg"
    output_file="$arg"
    get_output_file="no"
    continue
  fi

  case "$arg" in
    -c)
      allargs="$allargs $arg"
      compile_args="$compile_args $arg"

      if test "x$do_link" = "xyes" -a -n "$output_file"; then
        compile_args="$compile_args -o $output_file"
      fi

      do_link="no"
      dash_c="yes"
      ;;
    -o)
      allargs="$allargs $arg"
      dash_o="yes"

      if test "x$dash_c" = "xyes"; then
        compile_args="$compile_args $arg"
      else
        link_args="$link_args $arg"
        do_link="yes"
        get_output_file="yes"
      fi
      ;;
    -E|-M|-MT)
      allargs="$allargs $arg"
      compile_args="$compile_args $arg"
      dash_c="yes"
      do_link="no"
      ;;
    -l*)
      link_args="$link_args $arg"
      allargs="$allargs $arg"
      ;;
    -prefix=*)
      prefix="`expr "$arg" : '-prefix=\(.*\)'`"
      ;;
    -echo)
      set -x
      ;;
    -show)
      SHOW="echo"
      ;;
    -showconfig)
      showconfigure
      exit $status
      ;;
    -shlib)
      USE_SHARED_LIB="yes"
      ;;
    -noshlib)
      USE_SHARED_LIB="no"
      ;;
    -help)
      usage
      ;;
    *\"*)
      qarg="'"$arg"'"
      allargs="$allargs $qarg"
      ;;
    *\'*)
      qarg='\"'"$arg"'\"'
      allargs="$allargs $qarg"
      ;;

        *) allargs="$allargs $arg"
	if [ -s "$arg" ] ; then
	    ext=`expr "$arg" : '.*\(\..*\)'`
	    if [ "$ext" = ".f" -o "$ext" = ".F" -o \
                 "$ext" = ".for" -o "$ext" = ".FOR" -o \
                 "$ext" = ".ftn" -o "$ext" = ".FTN" -o \
                 "$ext" = ".f90" -o "$ext" = ".F90" -o \
                 "$ext" = ".f95" -o "$ext" = ".F95" -o \
                 "$ext" = ".f03" -o "$ext" = ".F03" -o \
                 "$ext" = ".f08" -o "$ext" = ".F08" ] ; then
	        do_compile="yes"
	        compile_args="$compile_args $arg"
	        fname=`basename $arg $ext`
	        link_objs="$link_objs $fname.o"
	    elif [ "$ext" = ".o" ] ; then
		if test "x$dash_c" = "xyes"  ; then
	            compile_args="$compile_args $arg"
                else
	            do_link="yes"
	            link_objs="$link_objs $arg"
                fi
            elif test "x$ext" = "x.a"; then
              # This is an archive that we're linking in
              libraries=" $libraries $arg "
            else
              compile_args="$compile_args $arg"
              link_args="$link_args $arg"
            fi
	    else
	        compile_args="$compile_args $arg"
	        link_args="$link_args $arg"
	    fi
	;;
  esac
done

# It's possible that there isn't a modules flag...
  fmodules=""
  if test -n "$F9XMODFLAG"; then
    fmodules="${F9XMODFLAG}${includedir}"
  fi

if test "x$do_compile" = "xyes"; then
  if test "x$dash_c" != "xyes"; then
    compile_args="-c $compile_args"
  fi


  $SHOW $FC $H5BLD_FCFLAGS $FCFLAGS ${F9XSUFFIXFLAG} ${fmodules} $compile_args
  status=$?

  if test "$status" != "0"; then
    exit $status
  fi
fi


if test "x$do_link" = "xyes"; then
  shared_link=""
# conditionnaly link with the hl library
  if test "X$HL" = "Xhl"; then
   libraries=" $libraries -lhdf5hl_fortran -lhdf5_hl -lhdf5_fortran -lhdf5 "
  else
   libraries=" $libraries -lhdf5_fortran -lhdf5 "
  fi
  link_args="$link_args -L${libdevdir}"

  case "$host_os" in
    linux*)               flag="-Wl,-rpath -Wl," ;;
    hpux*)                flag="-Wl,+b -Wl," ;;
    freebsd*|solaris*)    flag="-R" ;;
    rs6000*|aix*)         flag="-L" ;;
    sgi)                  flag="-rpath " ;;
    *)                    flag="" ;;
  esac

  if test -n "$flag"; then
    shared_link="${flag}${libdevdir}"
  fi

  if test "x$USE_SHARED_LIB" != "xyes"; then
    # The hdf5 library "-l" flags are in here already.  This is a static
    # compile though, so change it to the static versions (.a) of the libraries.
    new_libraries=""
    for lib in $libraries; do
      case "$lib" in
        -lhdf5)
          new_libraries="$new_libraries ${libdevdir}/libhdf5.a"
          ;;
        -lhdf5_hl)
          new_libraries="$new_libraries ${libdevdir}/libhdf5_hl.a"
          ;;
        -lhdf5_fortran)
          new_libraries="$new_libraries ${libdevdir}/libhdf5_fortran.a"
          ;;
        -lhdf5hl_fortran)
          new_libraries="$new_libraries ${libdevdir}/libhdf5hl_fortran.a"
          ;;
        *)
          new_libraries="$new_libraries $lib"
          ;;
      esac
    done
    libraries="$new_libraries"
  fi

  for lib in $libraries; do
    if echo $link_args | grep " $lib " > /dev/null ||
       echo $link_args | grep " $lib$" > /dev/null; then
      :
    else
      link_args="$link_args $lib "
    fi
  done

  # The LIBS are just a bunch of -l* libraries necessary for the HDF5
  # module. It's okay if they're included twice in the compile line.
  link_args="$link_args $H5BLD_LDFLAGS $H5BLD_LIBS"

  # User's FCFLAGS come after their H5BLD counterparts. User's LDFLAGS come just
  # before clibpath, user's LIBS come after $link_objs and before the hdf5
  # libraries in $link_args, followed by any external library paths and libraries
  # from AM_LDFLAGS, LDFLAGS, AM_LIBS or LIBS carried in from the hdf5 build.
  # The order of the flags is intended to give precedence to the user's flags.
  $SHOW $FLINKER $FCFLAGS $H5BLD_FCFLAGS $F9XSUFFIXFLAG $LDFLAGS $fmodules $link_objs $LIBS $link_args $shared_link
  status=$?
fi

exit $status