#! /bin/sh

#

# (C) 2006 by Argonne National Laboratory.

#     See COPYRIGHT in top-level directory.

#

# mpif77

# Simple script to compile and/or link MPI programs.

# This script knows the default flags and libraries, and can handle

# alternative C compilers and the associated flags and libraries.

# The important terms are:

#    includedir, libdir - Directories containing an *installed* mpich

#    prefix, execprefix - Often used to define includedir and libdir

#    F77                - Fortran 77 compiler

#    WRAPPER_FFLAGS     - Any special flags needed to compile 

#    WRAPPER_LDFLAGS    - Any special flags needed to link

#    WRAPPER_LIBS       - Any special libraries needed in order to link

#    F77_OTHER_LIBS     - Yet more libraries, needed just with F77

#    

#    

# We assume that (a) the C compiler can both compile and link programs

#

# Handling of command-line options:

#   This is a little tricky because some options may contain blanks.

#

# Special issues with shared libraries - todo

#

# --------------------------------------------------------------------------

# Set the default values of all variables.

#

# Directory locations: Fixed for any MPI implementation.

# Set from the directory arguments to configure (e.g., --prefix=/usr/local)

prefix=__PREFIX_TO_BE_FILLED_AT_INSTALL_TIME__

exec_prefix=__EXEC_PREFIX_TO_BE_FILLED_AT_INSTALL_TIME__

sysconfdir=__SYSCONFDIR_TO_BE_FILLED_AT_INSTALL_TIME__

includedir=__INCLUDEDIR_TO_BE_FILLED_AT_INSTALL_TIME__

libdir=__LIBDIR_TO_BE_FILLED_AT_INSTALL_TIME__

# Default settings for compiler, flags, and libraries

# Determined by a combination of environment variables and tests within

# configure (e.g., determining whehter -lsocket is needee)

F77="@F77@"

F77CPP="@F77CPP@"

MPICH_VERSION="@MPICH_VERSION@"

enable_wrapper_rpath="@enable_wrapper_rpath@"

@f77_shlib_conf@

# Internal variables

# Show is set to echo to cause the compilation command to be echoed instead 

# of executed.

Show=eval

#

# End of initialization of variables

#---------------------------------------------------------------------

# Environment Variables.

# The environment variables MPICH_F77 may be used to override the 

# default choices.

# In addition, if there is a file $sysconfdir/mpif77-$F77name.conf, 

# where F77name is the name of the compiler with all spaces replaced by hyphens

# (e.g., "f77 -64" becomes "f77--64", that file is sources, allowing other

# changes to the compilation environment.  See the variables used by the 

# script (defined above)

# Added MPICH_F77_OLD, MPICH_F77 can be used to prefix F77

# with external utility, e.g. setenv MPICH_F77 'eval linkcache $MPICH_F77_OLD'

if [ -n "$MPICH_F77" ] ; then

    MPICH_F77_OLD="$F77"

    F77="$MPICH_F77"

    F77name=`echo $F77 | sed 's/ /-/g'`

    if [ -s $sysconfdir/mpif77-$F77name.conf ] ; then

        . $sysconfdir/mpif77-$F77name.conf

    fi

fi

# Allow a profiling option to be selected through an environment variable

if [ -n "$MPIF77_PROFILE" ] ; then

    profConf=$MPIF77_PROFILE

fi

#

# ------------------------------------------------------------------------

# Argument processing.

# This is somewhat awkward because of the handling of arguments within

# the shell.  We want to handle arguments that include spaces without 

# loosing the spacing (an alternative would be to use a more powerful

# scripting language that would allow us to retain the array of values, 

# which the basic (rather than enhanced) Bourne shell does not.  

#

# Look through the arguments for arguments that indicate compile only.

# If these are *not* found, add the library options

linking=yes

allargs=""

interlib_deps=yes

for arg in "$@" ; do

    # Set addarg to no if this arg should be ignored by the C compiler

    addarg=yes

    qarg=$arg

    case $arg in 

 	# ----------------------------------------------------------------

	# Compiler options that affect whether we are linking or no

    -c|-S|-E|-M|-MM)

    # The compiler links by default

    linking=no

    ;;

	# ----------------------------------------------------------------

	# Options that control how we use mpif77 (e.g., -show, 

	# -f77=* -config=*

    -static)

    interlib_deps=no

    ;;

    -echo)

    addarg=no

    set -x

    ;;

    -f77=*)

    F77=`echo A$arg | sed -e 's/A-f77=//g'`

    addarg=no

    ;;

    -fc=*)

    F77=`echo A$arg | sed -e 's/A-fc=//g'`

    addarg=no

    ;;

    -show)

    addarg=no

    Show=echo

    ;;

    -config=*)

    addarg=no

    F77name=`echo A$arg | sed -e 's/A-config=//g'`

    if [ -s "$sysconfdir/mpif77-$F77name.conf" ] ; then

        . "$sysconfdir/mpif77-$F77name.conf"

    else

	echo "Configuration file mpif77-$F77name.conf not found"

    fi

    ;;

    -compile-info|-compile_info)

    # -compile_info included for backward compatibility

    Show=echo

    addarg=no

    ;;

    -link-info|-link_info)

    # -link_info included for backward compatibility

    Show=echo

    addarg=no

    ;;

    -v)

    # Pass this argument to the compiler as well.

    echo "mpif77 for MPICH version $MPICH_VERSION"

    # if there is only 1 argument, it must be -v.

    if [ "$#" -eq "1" ] ; then

        linking=no

    fi

    ;;

    -profile=*)

    # Pass the name of a profiling configuration.  As

    # a special case, lib<name>.so or lib<name>.la may be used

    # if the library is in $libdir

    profConf=`echo A$arg | sed -e 's/A-profile=//g'`

    addarg=no

    # Loading the profConf file is handled below

    ;;

    -nativelinking)

    # Internal option to use native compiler for linking without MPI libraries

    nativelinking=yes

    addarg=no

    ;;

    -help)

    NC=`echo "$F77" | sed 's%\/% %g' | awk '{print $NF}' -`

    if [ -f "$sysconfdir/mpixxx_opts.conf" ] ; then

        . $sysconfdir/mpixxx_opts.conf

        echo "    -f77=xxx      - Reset the native compiler to xxx."

        echo "    -fc=xxx       - Reset the native compiler to xxx."

    else

        if [ -f "./mpixxx_opts.conf" ] ; then

            . ./mpixxx_opts.conf

            echo "    -f77=xxx      - Reset the native compiler to xxx."

            echo "    -fc=xxx       - Reset the native compiler to xxx."

        fi

    fi

    exit 0

    ;;

        # -----------------------------------------------------------------

	# Other arguments.  We are careful to handle arguments with 

	# quotes (we try to quote all arguments in case they include 

	# any spaces)

    *\"*) 

    qarg="'"$arg"'"

    case $arg in 

       -D*)

       cppflags="$cppflags $qarg"

       ;;

    esac

    ;;

    *\'*) 

    qarg='\"'"$arg"'\"'

    case $arg in 

       -D*)

       cppflags="$cppflags $qarg"

       ;;

    esac

    ;;

    # The following are special args used to handle .F files when the

    # Fortran compiler itself does not handle these options

    -I*)

    cppflags="$cppflags $arg"

    ;;

    -D*)

    cppflags="$cppflags $arg"

    ;;

    *.F|*.F90|*.fpp|*.FPP)

# If F77CPP is not empty, then we need to do the following:

#    If any input files have the .F or .F90 extension, then    

#        If F77CPP = false, then

#            generate an error message and exit

#        Use F77CPP to convert the file from .F to .f, using 

#            $TMPDIR/f$$-$count.f as the output file name

#            Replace the input file with this name in the args

# This is needed only for very broken systems

#     

    if [ -n "$F77CPP" ] ; then

        if [ "$F77CPP" = "false" ] ; then

            echo "This Fortran compiler does not accept .F or .F90 files"

	    exit 1

        fi

        addarg=no

	# Remove and directory names and extension

	$ext=`expr "$arg" : '.*\(\..*\)'`

        bfile=`basename $arg $ext`

	#

	TMPDIR=${TMPDIR:-/tmp}

        tmpfile=$TMPDIR/f$$-$bfile.f

        if $F77CPP $cppflags $arg > $tmpfile ; then

            # Add this file to the commandline list

	    count=`expr $count + 1`

	    allargs="$allargs $tmpfile"

	    rmfiles="$rmfiles $tmpfile"

        else

	    echo "Aborting compilation because of failure in preprocessing step"

	    echo "for file $arg ."

	    exit 1

        fi

    fi

    # Otherwise, just accept the argument

    ;;

    # - end of special handling for .F files

    *)

    qarg="'$arg'"

    ;;

    esac

    if [ $addarg = yes ] ; then

        allargs="$allargs $qarg"

    fi

done

if [ $# -eq 0 ] ; then

    echo "Error: Command line argument is needed!"

    "$0" -help

    exit 1

fi

# -----------------------------------------------------------------------

# Derived variables.  These are assembled from variables set from the

# default, environment, configuration file (if any) and command-line

# options (if any)

f77libs=

if [ "@MPIFCLIBNAME@" != "@MPILIBNAME@" ] ; then

    f77libs="-l@MPIFCLIBNAME@"

fi

PROFILE_FOO=

# Handle the case of a profile switch

if [ -n "$profConf" ] ; then

    profConffile=

    if [ -s "$libdir/lib$profConf.a" -o -s "$libdir/lib$profConf.so" ] ; then

	PROFILE_FOO="-l$profConf"

    elif [ -s "$sysconfdir/$profConf.conf" ] ; then

	profConffile="$sysconfdir/$profConf.conf"

    elif [ -s "$profConf.conf" ] ; then

        profConffile="$profConf.conf"

    else

        echo "Profiling configuration file $profConf.conf not found in $sysconfdir"

    fi

    if [ -n "$profConffile" -a -s "$profConffile" ] ; then

	. $profConffile

    fi

fi

final_fflags="@MPICH_MPIF77_FFLAGS@ @WRAPPER_FFLAGS@"

final_ldflags="@MPICH_MPIF77_LDFLAGS@ @WRAPPER_LDFLAGS@"

final_libs="@MPICH_MPIF77_LIBS@"

if test "@INTERLIB_DEPS@" = "no" -o "${interlib_deps}" = "no" ; then

    final_ldflags="${final_ldflags} @LDFLAGS@"

    final_libs="${final_libs} @LIBS@ @WRAPPER_LIBS@"

fi

# A temporary statement to invoke the compiler

# Place the -L before any args incase there are any mpi libraries in there.

# Eventually, we'll want to move this after any non-MPI implementation 

# libraries

#

if [ "$linking" = yes ] ; then

    # Attempt to encode rpath info into the executable if the user has not

    # disabled rpath usage and some flavor of rpath makes sense on this

    # platform.

    # TODO configure and config.rpath are computing more sophisticated rpath

    # schemes than this simple one.  Consider updating this logic accordingly.

    if test "X$enable_wrapper_rpath" = "Xyes" ; then

        eval rpath_flags=\"${hardcode_libdir_flag_spec}\"

    else

	rpath_flags=""

    fi

    if [ "$nativelinking" = yes ] ; then

        $Show $F77 $PROFILE_INCPATHS ${final_fflags} ${final_ldflags} $allargs -I$includedir

        rc=$?

    else

        $Show $F77 $PROFILE_INCPATHS ${final_fflags} ${final_ldflags} $allargs -I$includedir -L$libdir $f77libs $PROFILE_PRELIB $PROFILE_FOO $rpath_flags -l@MPILIBNAME@ @LPMPILIBNAME@ $PROFILE_POSTLIB ${final_libs} @F77_OTHER_LIBS@

        rc=$?

    fi

else

    $Show $F77 $PROFILE_INCPATHS ${final_fflags} $allargs -I$includedir

    rc=$?

fi

if [ -n "$rmfiles" ] ; then

    for file in $rmfiles ; do

        objfile=`basename $file .f`

	if [ -s "${objfile}.o" ] ; then

	    # Rename 

	    destfile=`echo $objfile | sed -e "s/.*$$-//"`

	    mv -f ${objfile}.o ${destfile}.o

	fi

        rm -f $file

    done

    rm -f $rmfiles

fi

exit $rc