#! /bin/sh
# 
# (C) 2006 by Argonne National Laboratory.
#     See COPYRIGHT in top-level directory.
#
# Update all of the derived files
# For best performance, execute this in the top-level directory.
# There are some experimental features to allow it to be executed in
# subdirectories
#
# Eventually, we want to allow this script to be executed anywhere in the
# mpich tree.  This is not yet implemented.
error_summary=""
acVersion=unknown

# finalStatus records whether there have been problems in updatefiles
# 1 = warning, 3 = fatal, 2 = reserved for future use, 
# 0 = no problems detected.
finalStatus=0
at_top=no
if [ -d maint -a -s maint/simplemake.in ] ; then
    at_top=yes
fi
#
# Default choices
# depend choices are dynamic, static, no
do_depend=dynamic
do_geterrmsgs=yes
do_getparms=no
do_bindings=yes
do_f77=yes
do_f77tof90=yes
do_build_configure=yes
do_genstates=yes
do_makefiles=yes
do_smpdversion=yes

# Allow MAKE to be set from the environment
MAKE=${MAKE-make}

# ltdirs are the directories that make use of libtool and 
# require libtoolize 
# externals are the directories for external packages that we have 
# included into MPICH2
externals="src/pm/hydra/tools/bind/hwloc/hwloc"
ltdirs="src/pm/hydra"
# amdirs are the directories that make use of autoreconf
amdirs="src/openpa src/pm/hydra src/mpl"

# List of steps that we will consider
# (We do not include depend because the values for depend are not just yes/no)
AllSteps="geterrmsgs bindings f77 f77tof90 build_configure genstates makefiles smpdversion getparms"
stepsCleared=no

# Extract defaults from the environment
autoconfdir=$MPICH2_AUTOCONF_DIR
automakedir=$MPICH2_AUTOMAKE_DIR
libtooldir=$MPICH2_LIBTOOL_DIR
autotoolsdir=$MPICH2_AUTOTOOLS_DIR

# Extract the arguments intended for updatefiles.  Any others are
# given to simplemake.  
temp_args=""
for arg in "$@" ; do
    case $arg in 
    -echo)
	set -x
	;;
	
    -do=*|--do=*)
    opt=`echo A$arg | sed -e 's/^A--*do=//'`
    # Handle some synonyms
    case $opt in 
	build-configure|configure) opt=build_configure ;;
	makefile|Makefile|Makefiles) opt=makefiles;;
    esac
    var=do_$opt
    # Check that this opt is known
    eval oldval=\$"$var"
    if [ -z "$oldval" ] ; then
	echo "-do=$opt is unrecognized"
	exit 1
    else 
        if [ $stepsCleared = no ] ; then
	    for step in $AllSteps ; do
	        var=do_$step
	        eval $var=no
	    done
	    stepsCleared=yes
        fi
        var=do_$opt
        eval $var=yes
    fi
    ;;

    -with-genstates|--with-genstates)
    do_genstates=yes
    ;;
    -without-genstates|--without-genstates)
    do_genstates=no
    ;;
 
    -with-errmsgs|--with-errmsgs)
    do_geterrmsgs=yes
    ;;
    -without-errmsgs|--without-errmsgs)
    do_geterrmsgs=no
    ;;

    -with-bindings|--with-bindings)
    do_bindings=yes
    ;;
    -without-bindings|--without-bindings)
    do_bindings=no
    ;;

    -with-f77|--with-f77)
    do_f77=yes
    ;;
    -without-f77|--without-f77)
    do_f77=no
    ;;

    -with-autoconf=*|--with-autoconf=*)
    # Select a location for a different autoconf
    autoconfdir=`echo "A$arg" | sed -e 's/.*=//'`
    ;;
    -with-automake=*|--with-automake=*)
    automakedir=`echo "A$arg" | sed -e 's/.*=//'`
    ;;
    -with-libtool=*|--with-libtool=*)
    libtooldir=`echo "A$arg" | sed -e 's/.*=//'`
    ;;
    -with-autotools=*|--with-autotools=*)
    autotoolsdir=`echo "A$arg" | sed -e 's/.*=//'`
    ;;

    -distrib)
    do_depend=no
    do_build_configure=no
    temp_args="$temp_args $arg"
    ;;

    -help|--help|-usage|--usage)
    cat <<EOF
    updatefiles [ --with-autoconf=dir ] [ --with-automake=dir ] \\
                [ --with-libtool=dir ] [ --with-autotools=dir ] \\
                [ --do=stepname ] [ args for simplemake ]
    Update the files in the MPICH2 build tree.  This file builds the 
    configure files, creates the Makefile.in files (using the simplemake
    program), extracts the error messages.

    You can use --with-autoconf=dir to specify a directory that
    contains an alternate autoconf and autoheader.  Similarly
    --with-automake can be used to specify the location of automake
    and aclocal and --with-libtool to specify the location of
    libtoolize. If all the autotools are installed in the same
    location, they can be specified by the --with-autotools option.

    Use --do=stepname to update only a single step.  For example, 
    --do=build_configure only updates the configure scripts.  The available
    steps are:
EOF
    for step in $AllSteps
    do
       echo "        $step"
    done
    exit
    ;;
    *)
    temp_args="$temp_args $arg"
    ;;
    esac
done

if [ -n "$autotoolsdir" ] ; then
    if [ -n "$autoconfdir" -o -n "$automakedir" -o -n "$libtooldir" ] ; then
        # Don't permit --with-autotools together with --with-autoconf,
        # --with-automake or --with-libtool because which argument
        # takes precedence is not obvious without immediate
        # explanation.  --with-autotools is really only present to
        # make life a little easier for those who preferred the old
        # behavior where --with-autoconf was used to specify the
        # location of both autoconf and automake.
        cat <<EOT
Error: --with-autotools was specified together with --with-autoconf,
--with-automake or --with-libtool.  --with-autotools is incompatible
with the other options.  Please specify only one set or the other.
EOT
        exit 1
    else
        autoconfdir=$autotoolsdir
        automakedir=$autotoolsdir
	libtooldir=$autotoolsdir
    fi
fi

# Reset the arguments.  Note that this doesn't handle arguments that contain
# blanks.  I hope that we don't need those.
set -- $temp_args
#
if [ $at_top = "no" ] ; then
    echo "Must execute at top level directory for now"
    exit 1
fi
# 
# On some systems (including Solaris), using -nt in a test statement causes
# the shell script to abort.  We test for this here to make updatefiles more
# robust in this case.  We use conftest as the name of the test program
# because autoconf also uses this name, so we know that it will be ok.
testNTfails=yes
rm -rf conftest
cat <<EOF >>conftest
#! /bin/sh
test a -nt b
exit 2
EOF
chmod +x conftest
./conftest 1>/dev/null 2>&1 >/dev/null
st=$?
if [ "$st" = 2 ] ; then
    testNTfails=no
fi
rm -rf conftest
#
# Determine the autoconf to use.  If --with-autoconf was set, use 
# autoconf and autoheader from that directory
# This may also be needed for tools in the maint directory
if [ -n "$autoconfdir" ] ; then
    if [ -x $autoconfdir/autoconf -a -x $autoconfdir/autoheader ] ; then
        autoconf=$autoconfdir/autoconf
        autoheader=$autoconfdir/autoheader
        autoreconf=$autoconfdir/autoreconf
        autom4te=$autoconfdir/autom4te
	# Simplemake looks in environment variables for the autoconf
	# and autoheader to use
	AUTOCONF=$autoconf
	AUTOHEADER=$autoheader
        AUTORECONF=$autoreconf
        AUTOM4TE=$autom4te
	export AUTOCONF
	export AUTOHEADER
        export AUTORECONF
        export AUTOM4TE
    else
        echo "Could not find executable autoconf and autoheader in $autoconfdir"
	exit 1
    fi
else
    autoconf=${AUTOCONF:-autoconf}
    autoheader=${AUTOHEADER:-autoheader}
    autoreconf=${AUTORECONF:-autoreconf}
    autom4te=${AUTOM4TE:-autom4te}
fi
if [ -n "$automakedir" ] ; then
    if [ -x "$automakedir/aclocal" -a -x "$automakedir/automake" ] ; then
        # OpenPA uses autoreconf (and consequently aclocal and automake)
        # but autoreconf uses whatever aclocal/automake is in your path,
        # not the one from the same autoconf installation as the
        # autoreconf you are invoking.  So we export ACLOCAL (etc...) so
        # that it uses the right tools when specifying --with-automake.
        automake=$automakedir/automake
        aclocal=$automakedir/aclocal
        AUTOMAKE=$automake
        ACLOCAL=$aclocal
        export AUTOMAKE
        export ACLOCAL
    else
        echo "could not find executable aclocal and automake in $automakedir"
        exit 1
    fi
else
    automake=${AUTOMAKE:-automake}
    aclocal=${ACLOCAL:-aclocal}
fi
if [ -n "$libtooldir" ] ; then
    if [ -x "$libtooldir/libtoolize" ] ; then
        libtoolize=$libtooldir/libtoolize
        LIBTOOLIZE=$libtoolize
        export LIBTOOLIZE
    else
        echo "could not find executable libtoolize in $libtooldir"
        exit 1
    fi
else
    libtoolize=${LIBTOOLIZE:-libtoolize}
fi

#
# Check that you have a working autoconf.  Autoconf 2.57 is not compatible with
# previous versions of autoconf (!!), even 2.52 (!!!).  
acVersion=ok
if [ -d .tmp ] ; then rm -rf .tmp ; fi
if [ -s .tmp ] ; then rm -f .tmp ; fi
if [ ! -d .tmp ] ; then
    mkdir .tmp 2>&1 >/dev/null
fi
# As of autoconf 2.59, the command line arguments changed (again)
# We now require 2.59 most places, and 2.62 in several (including the 
# top-level), so we just double check
# Somewhere between 2.12 and 2.58, -l changed to -B
# Argh.  In autoconf 2.59, -B doesn't work.  You must use -I instead of -B (!!)
# Find the configure version
# acSubversion is the version number minus 2.  (we assume autoconf 2.xx)
# -1 is used for unknown
acSubversion=-1
acIncDirFlag=-I
# Try to keep at least one version ahead of autoconf (e.g., if current is
# 2.64, include a test for 2.65)
for ver in 65 64 63 62 61 60 59 ; do
    rm -f .tmp/configure.in .tmp/configure
    cat >.tmp/configure.in <<EOF
AC_PREREQ(2.$ver)
EOF
    if (cd .tmp && $autoconf >/dev/null 2>&1 ) ; then
	acSubversion=$ver
	break
    fi
done
rm -f .tmp/configure.in .tmp/configure
if [ "$acSubversion" -gt 0 ] ; then
    acVersion="2.$acSubversion"
    echo "You have autoconf version $acVersion or greater."
    # this used to be a check for >=63, but we only work with exactly 2.63 right now
    if [ "$acSubversion" -ne 63 ] ; then
       cat <<EOF
autoconf version 2.63 (exactly) is required
EOF
       if [ "$do_build_configure" = yes ] ; then 
            echo "Exiting updatefiles...."
            exit 1
       fi
    fi
else
    cat <<EOF
You either do not have autoconf in your path or updatefiles was unable to 
determine which version of autoconf you have.  You may be able to use
     autoconf --version
to see the version of autoconf (unfortunately, there is no standard 
format for the version output and it changes between autoconf versions.
In addition, some versions of autoconf choose among many versions and
provide incorrect output).
EOF
	error_summary="$error_summary \
No autoconf in path or unable to determine the version of autoconf."
        acVersion="Unknown"
fi
rm -rf .tmp

#
# Create the bindings if necessary 
if [ $do_bindings = "yes" ] ; then
    build_f77=no
    build_f90=no
    build_cxx=no
    if [ $do_f77 = "yes" ] ; then
        if [ ! -s src/binding/f77/abortf.c ] ; then 
	    build_f77=yes
        elif find src/binding/f77 -name 'buildiface' -newer 'src/binding/f77/abortf.c' >/dev/null 2>&1 ; then
	    build_f77=yes
        fi
        if [ ! -s src/binding/f90/mpi_base.f90 ] ; then
 	    build_f90=yes
        elif find src/binding/f90 -name 'buildiface' -newer 'src/binding/f90/mpi_base.f90' >/dev/null 2>&1 ; then
	    build_f90=yes
        fi
 
    fi

    if [ $build_f77 = "yes" ] ; then
	echo "Building Fortran 77 interface"
	( cd src/binding/f77 && chmod a+x ./buildiface && ./buildiface )
    fi
    if [ $build_f90 = "yes" ] ; then
	echo "Building Fortran 90 interface"
	( cd src/binding/f90 && chmod a+x ./buildiface && ./buildiface )
	( cd src/binding/f90 && ../f77/buildiface -infile=cf90t.h -deffile=cf90tdefs)
    fi

    if [ ! -s src/binding/cxx/mpicxx.h ] ; then 
	build_cxx=yes
    elif find src/binding/cxx -name 'buildiface' -newer 'src/binding/cxx/mpicxx.h' >/dev/null 2>&1 ; then
	build_cxx=yes
    fi
    if [ $build_cxx = "yes" ] ; then
	echo "Building C++ interface"
	( cd src/binding/cxx && chmod a+x ./buildiface &&
	  ./buildiface -nosep $otherarg )
    fi
fi
#
# Capture the error messages
if [ $do_geterrmsgs = "yes" ] ; then
    if [ ! -x maint/extracterrmsgs -a -s maint/extracterrmsgs ] ; then
        # grrr.  CVS doesn't maintain permissions correctly across Windows/Unix
        chmod a+x maint/extracterrmsgs
    fi
    if [ -x maint/extracterrmsgs ] ; then
        echo "Extracting the error messages..."
        rm -rf .tmp
        rm -f .err
	rm -f unusederr.txt
        maint/extracterrmsgs -careful=unusederr.txt \
	    -skip=src/util/multichannel/mpi.c `cat maint/errmsgdirs` > \
	    .tmp 2>.err
        # (error here is ok)
        update_errdefs=yes
        if [ -s .err ] ; then 
            cat .err
            rm -f .err2
            grep -v "Warning:" .err > .err2
            if [ -s .err2 ] ; then
                echo "Because of errors in extracting error messages, the file"
                echo "src/mpi/errhan/defmsg.h was not updated."
	        error_summary="$error_summary \
Error message files in src/mpi/errhan were not updated."
                update_errdefs=no
	        finalStatus=1
   	        rm -f .tmp
            fi
            rm -f .err .err2
        else
            # Incase it exists but has zero size
            rm -f .err
        fi
	if [ -s unusederr.txt ] ; then
	    echo "There are unused error message texts in src/mpi/errhan/errnames.txt"
	    echo "See the file unusederr.txt for the complete list"
        fi
        if [ -s .tmp -a "$update_errdefs" = "yes" ] ; then
            mv .tmp src/mpi/errhan/defmsg.h
        fi
        if [ ! -s src/mpi/errhan/defmsg.h ] ; then
            echo "Creating a dummy defmsg.h file"
	    cat > src/mpi/errhan/defmsg.h <<EOF
typedef struct { const unsigned int sentinal1; const char *short_name, *long_name; const unsigned int sentinal2; } msgpair;
static const int generic_msgs_len = 0;
static msgpair generic_err_msgs[] = { {0xacebad03, 0, "no error catalog", 0xcb0bfa11}, };
static const int specific_msgs_len = 0;
static msgpair specific_err_msgs[] = {  {0xacebad03,0,0,0xcb0bfa11}, };
#if MPICH_ERROR_MSG_LEVEL > MPICH_ERROR_MSG_NONE
#define MPIR_MAX_ERROR_CLASS_INDEX 54
static int class_to_index[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0 };
#endif
EOF
        fi
    fi
fi  # do_geterrmsgs
#
# Build scripts such as simplemake if necessary
made_simplemake=no
run_configure=no
# Later versions of autoconf put the autoconf version into the autom4te*.cache
# name.
# Later versions of autoconf (2.57+?) will silently ignore the command to 
# rebuild the configure if it thinks that nothing has changed.  However,
# it does not accurately decide this (e.g., if aclocal.m4 includes files 
# that have changed, autoconf will ignore that and not regenerate the 
# configure file).  The information that autoconf uses is saved in the
# autom4te*.cache file; since this cache is not accurate, we delete it.
if [ ! -x maint/configure ] ; then
    (cd maint && $autoconf && rm -rf autom4te*.cache )
elif find maint -name 'configure.in' -newer 'maint/configure' >/dev/null 2>&1 ; then
    # The above relies on the Unix find command
    (cd maint && $autoconf && rm -rf autom4te*.cache)
fi
if [ ! -x maint/simplemake -o ! -x maint/genstates ] ; then
    run_configure=yes
fi
#
# The following relies on the Unix find command
if [ -s maint/simplemake ] ; then
    if find maint -name 'simplemake.in' -newer 'maint/simplemake' >/dev/null 2>&1 ; then
        run_configure=yes
    fi
else
    run_configure=yes
fi
if [ -s maint/genstates ] ; then 
    if find maint -name 'genstates.in' -newer 'maint/genstates' >/dev/null 2>&1 ; then
        run_configure=yes
    fi
else
    run_configure=yes
fi

if [ "$run_configure" = "yes" ] ; then
    (cd maint && ./configure)
    made_simplemake=yes
fi

#
if [ ! -x maint/simplemake -a $do_makefiles = yes ] ; then
    echo "Could not create simplemake"
    echo "You can copy simplemake.in to simplemake, replacing @PERL@ with the"
    echo "path to Perl (version5).  Make sure the resulting file has"
    echo "execute permissions set."
    exit 1
fi

# Run some of the simple codes
#
# if [ -x maint/genstates -a $do_genstates = "yes" ] ; then
#     echo "Creating the enumeration of logging states into src/include/mpiallstates.h"
#     maint/genstates
# fi
if [ -x maint/extractstates -a $do_genstates = "yes" ] ; then
    echo "Creating the enumeration of logging states into src/include/mpiallstates.h"
    maint/extractstates
fi
if [ -x maint/extractparms -a $do_getparms = "yes" ] ; then
    maint/extractparms -outfile=parms.htm
fi
# Create and/or update the f90 tests
if [ -x maint/f77tof90 -a $do_f77tof90 = "yes" ] ; then
    echo "Create or update the Fortran 90 tests derived from the Fortran 77 tests"
    for dir in test/mpi/f77/* ; do
        if [ ! -d $dir ] ; then continue ; fi
	leafDir=`basename $dir`
        if [ ! -d test/mpi/f90/$leafDir ] ; then
	    mkdir test/mpi/f90/$leafDir
        fi
        maint/f77tof90 $dir test/mpi/f90/$leafDir Makefile.sm Makefile.ap
    done
fi

if [ $made_simplemake != "no" -a $do_makefiles = yes ] ; then
    # Check that only the first three lines were changed:
    rm -f .t1 .t2
    sed -e 1,3d maint/simplemake.in > .t1
    sed -e 1,3d maint/simplemake > .t2
    if diff .t1 .t2 >/dev/null 2>&1 ; then
        :
    else
        echo "Something is wrong with simplemake; configure may have"
        echo "replaced variables that it should not have."
        diff .t1 .t2
        exit 1
    fi
    rm -f .t1 .t2
fi
#
# Create the Makefile.in files
# Make sure that these files exist so that the gcc dependency creation
# can work
rm_prepost=no
if [ ! -s src/include/mpidpre.h ] ; then
    rm_prepost=yes
fi
otherargs="$@"
# If there is no mpi.h file (and other files, but testing on mpi.h should
# be enough), don't generate the dependency information in the Makefiles
# with the static dependency target.  The new default in simplemake is
# dynamic dependency data
# Currently, the dependency generation relies on using gcc, so we may 
# want to test on that as well.
# 
# 
if [ $do_depend = static -a ! -s src/include/mpi.h ] ; then
    # Static dependencies require a mpi.h file
    echo "Turning off static generation of dependencies because there is no mpi.h file"
    do_depend=no
fi
if [ $do_depend = no ] ; then 
    otherargs="$otherargs -nodepend"
#else
#    # The next two files may be needed to build the dependency lists
#    touch src/include/mpidpre.h src/include/mpidpost.h
fi
# 
# autoconf 2.57 drastically changed the command line arguments.
# Up through 2.52, -l dir was the "localdir for searching"
# By 2.57, -l was no longer accepted, and -B dir or --prepend-include=DIR
# was used.  
# To make things more exciting, the format of autoconf --version has
# changed, making it very hard to automatically extract the version number
# so that programs like this can work around poor software engineering, 
# such as incompatible changes in a minor-numbered release.
#
# Just to make this even more interesting, the cygwin version of 
# autoconf selects a version.  But the code to so this causes --version 
# (and --help!) to fail unless there is a configure.in file in the current
# directory.  
if [ $do_makefiles = yes ] ; then
    if maint/simplemake -common=maint/makedefs \
        -docnamedefs='${master_top_srcdir}/maint/docnotes' \
        -autoconf="$acIncDirFlag ROOTDIR/confdb" \
        -libdir='${MPILIBNAME}'=ROOTDIR/lib \
	-smroot='${master_top_srcdir}/maint' $otherargs \
        Makefile.sm ; then
        :
    else
        echo "Simplemake step failed!"
        exit 1
    fi
fi

# Create the configure files and run autoheader
# Eventually, make this a test for find available.  Perhaps
# find . -name configure.in > /dev/null 2>&1
# The problem is that even though cygwin has find, the DOS find
# is identified first.  We probably need a test for this case
fixBackWhackCtrlMBug=no
if [ $do_build_configure = yes ] ; then
    find . -name 'configure.in' >/dev/null 2>&1
    if [ $? = 0 ] ; then has_unix_find=yes ; else has_unix_find=no ; fi
    # if [ $? = 0 ] ; then .. code with find
    if [ "$has_unix_find" = "yes" -a "$do_build_configure" = "yes" ] ; then
	# Check for out-of-date configures (the dependency handling
	# isn't 100% accurate, so we use this step as an additional
	# check)
	if [ ! -s maint/conftimestamp ] ; then
	    echo "Rebuilding all configure script because of missing confdbtimestamp"
	    find . -name configure -print | grep -v maint/configure | xargs rm -f
	    # If we don't delete the autom4te.cache files, bugs in 
	    # autoconf may fail to correctly update configure
	    # Gah. Some xargs don't accept -r, other break if there is no
	    # input.  To avoid that, we do this in two steps: first the
	    # find, then the rm (if there are any files)
	    rm -f .atmp
	    find . -name autom4te.cache > .atmp 2>/dev/null
	    if [ -s .atmp ] ; then xargs rm -f < .atmp ; fi
	    rm -f .atmp
	    date > maint/conftimestamp
	else
	    # We can't use a status check here because find will always
	    # report success, even if there are no newer files in confdb
	    files=`find confdb -newer  maint/conftimestamp 2>&1` 
	    if [ -n "$files" ] ; then
		echo "Rebuilding all configure script because of changes in confdb"
 	        find . -name configure -print | grep -v maint/configure | xargs rm -f
	        date > maint/conftimestamp
	    fi
	fi
	#
        for dir in `find . -name 'configure.in' -print` ; do
            dir=`dirname $dir`
  	    allowFailure=no
	    builtConfigure=no
  	    #echo $dir
 	    qmpe2dir=`echo $dir | sed -e 's%.*src/mpe2.*%FOUNDMPE2%'`
	    if [ "$qmpe2dir" = "FOUNDMPE2" ] ; then
	        # echo "Found MPE2 directory; skipping"
	        # MPE2 has its own updatefiles script, which should 
	        # be used instead of this one.
	        continue
            fi
	    qtestmaint=`echo $dir | sed -e 's%.*test/mpi/maint.*%FOUNDTESTMAINT%'`
	    if [ "$qtestmaint" = "FOUNDTESTMAINT" ] ; then
	        # echo "Found test/maint directory; skipping"
	        # test/maint has its own updatefiles script, which should 
	        # be used instead of this one when building that configure
	        continue
            fi

	    found=0
	    for amdir in $amdirs ; do
		foo=`echo $dir | sed -e 's%.*'"$amdir"'.*%FOUNDFOO%'`
		if [ "$foo" = "FOUNDFOO" ] ; then
		    # We'll use autoreconf later in this script for these directories
		    found=1
		    break
		fi
	    done
	    if [ "$found" = "1" ] ; then
		continue
	    fi

	    if [ -s $dir/Makefile.in ] ; then 
                #echo "Found $dir/configure.in"
	        #
	        # Check for known problems
                if [ $dir = "./src/mpi/romio" ] ; then
		    echo "Creating configure in $dir"
		    # Using an explicit acIncDirFlag will force
		    # a consistent choice of autoconf
		    # Only use autoheader if AC_CONFIG_HEADER is
	 	    # present
		    if grep AC_CONFIG_HEADER $dir/configure.in >/dev/null 2>&1 ; then
		        (cd $dir && $autoheader $acIncDirFlag . )
		    fi
		    (cd $dir && \
			$autoconf $acIncDirFlag . && rm -rf autom4te*.cache )
	            if grep 'mpi2-other/info/Makefile \\
' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
                    fi
	            # Add other tests here (sigh) as necessary
	            if [ "$fixBackWhackCtrlMBug" = yes ] ; then
		        rm -f c.tmp 
		        sed -e '/"\\
/d' -e 's/\\
//g' $dir/configure > c.tmp
		        rm -f $dir/configure
		        mv c.tmp $dir/configure
		        chmod a+x $dir/configure
	            fi
		    builtConfigure=yes
	            continue
	        elif [ $dir = "./src/mpe2" ] ; then
		    # Use acIncDirFlag to ensure that a consistent
		    # choice of autoconf is made by systems that 
		    # support 2.1x and 2.57+
		    echo "Creating configure in $dir"
 		    if grep AC_CONFIG_HEADER $dir/configure.in >/dev/null 2>&1 ; then
		        (cd $dir && $autoheader $acIncDirFlag . )
		    fi
		    builtConfigure=yes
		    (cd $dir && $autoconf $acIncDirFlag . && rm -rf autom4te*.cache)
		    continue
	        fi
	        # First, check for a configure target in Makefile.in
	        if grep 'configure:' $dir/Makefile.in >/dev/null 2>&1 ; then
 	            # The make -q checks whether the target is upto date first;
	            # if it isn't, we remake it.
		    # The make target should be for ${srcdir}/configure,
		    # so in the make line, the target needs to be ./configure
		    # Using just "configure" is incorrect and will fail with
		    # some makes.
		    rm -f $dir/mf.out 
		    rm -f $dir/mf.newer
		    date > $dir/mf.newer
                    (cd $dir && rm -f mf.tmp ; \
	            sed -e 's%@SHELL@%/bin/sh%' \
		        -e "s%@srcdir@%.%g" \
		        -e '/include .*alldeps/d' \
		        -e '/@SET_MAKE@/d' Makefile.in > mf.tmp ;\
		        if ${MAKE} -q -f mf.tmp ./configure >mf.out 2>&1 ; then \
                    : ; else \
	            echo "Found $dir/configure.in; executing make configure target" ; \
	            ${MAKE} -f mf.tmp ./configure ; fi ; \
			if [ -s configure ] ; then rm -f mf.tmp ; \
			else echo "See `pwd`/mf.tmp for Makefile that failed" ;\
                        fi ;\
	            )
		    # Newer versions of test support -nt, which is
		    # filea newer-than fileb.  If this doesn't 
		    # work on your platform, simply comment out this test
		    # and set builtConfigure to true (or use find with
		    # -newer if you want to replace the test)
		    # Test for support of -nt
		    if [ "$testNTfails" = "no" ] ; then
		        rm -f .foo
		        test $dir/configure -nt $dir/mf.newer 2>.foo
		        # If .foo is empty, there was no error in test with -nt
		        if [ ! -s ".foo" ] ; then
		            if [ $dir/configure -nt $dir/mf.newer ] ; then
			        builtConfigure=yes
		            fi
                        fi
		        rm -f .foo
                    fi
		    #
		    rm -f $dir/mf.newer
		    if [ ! -x $dir/configure ] ; then
		        echo "Error! Could not build configure in $dir with make configure"
	                finalStatus=3
	            elif grep PAC_ $dir/configure >/dev/null 2>&1 ; then
			# If the user manually builds the configure without
			# properly specifying the include path, then
			# this code will detect the problem but will
			# the message may be confusing since the make 
			# step above will *not* have rebuilt the configure
			# (once the user builds it manually, the make step
			# will see the configure as newer than its 
			# dependencies and not rebuild it).
			mydir=$dir
			if [ "$dir" = "." ] ; then
			    mydir=`pwd`
			fi
			if [ "$buildConfigure" = "yes" ] ; then
			    echo "Error! autoconf did not find local macro definitions for configure in $mydir"
			    echo "Try removing configure in `pwd` and rerunning maint/updatefiles"
			    echo "The following (at most 40 lines) local macros were not found:"
			    grep PAC_ $dir/configure | head -40
			    if [ -s $dir/mf.out ] ; then
				echo "Output of make configure step was:"
				cat mf.out
			    fi
			else 
			    echo "Error! The file $mydir/configure contains local macro names (PAC_) and was not built by this "
			    echo "updatefiles step.  Try removing $mydir/configure (but do not"
			    echo "remove $mydir/configure.in) and rerun maint/updatefiles."
			    if [ -s $dir/aclocal.m4 ] ; then
				echo "Also, make sure that $mydir/aclocal.m4 is correct; only src/mpi/romio, "
				echo "src/pm/mpd, and src/mpe2/... directories should have an aclocal.m4"
				echo "file in the same directory with configure.in (others use the "
				echo "aclocal.m4 in confdb)."
			    fi
			    echo "*Never* run autoconf or autoheader manually because many of the configure.in "
			    echo "files require extra definitions from confdb/aclocal.m4 ."
			fi
		        finalStatus=3
		    fi
	  	    # Remove make output now that we no longer need it.
		    rm -f $dir/mf.out
                else 
		    if [ -x $dir/makeconfigure ] ; then
		        echo "Using makeconfigure in $dir"
		        (cd $dir && ./makeconfigure )
		    else
		        # Check for old 1.7 configure files (in MPE, at least for
		        # now)
		        if egrep 'AC_ARG|AC_CHECK_FUNCS' $dir/configure.in >/dev/null 2>&1 ; then
		            echo "Trying simple autoheader/autoconf in $dir"
			    if grep AC_CONFIG_HEADER $dir/configure.in >/dev/null 2>&1 ; then
		                (cd $dir && $autoheader $acIncDirFlag . )
			    fi
			    (cd $dir && $autoconf $acIncDirFlag . && rm -rf autom4te*.cache)
		        else
		            # Try autoconf-1.7; accepts failures gracefully
		            echo "Trying simple autoconf using 1.7 in $dir"
			    # Don't panic if we can't build this configure; it
			    # is too old.
			    allowFailure=yes
			    (cd $dir && autoconf-1.7)
		        fi
		    fi
                fi
	        #
                # Under cygwin, sometimes (?) configure ends up containing \^M
	        # (that's <ctrl>-M).  We may need to add this sed step
	        # sed -e '/"\
"/d' -e 's/\
//g'
	        # (the first removes case statements on \^M, the second
	        # removes the \^M from the ac_config_files statement
	        fixBackWhackCtrlMBug=no
	        if [ ! -s $dir/configure -a "$allowFailure" != yes ] ; then 
		    echo "PANIC: Could not make configure from configure.in"
		    echo "In directory $dir"
		    exit 1
	        elif [ -s $dir/configure ] ; then
	            if grep 'src/Makefile \\ src' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
	            elif grep 'src/Makefile \\
 src' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
	            elif grep 'attr/Makefile \\ util' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
	            elif grep 'attr/Makefile \\
' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
	            elif grep 'mpi2-other/info/Makefile \\
' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
	            elif grep 'maint/testmerge \\
' $dir/configure 2>&1 >/dev/null ; then 
		        fixBackWhackCtrlMBug=yes
                    fi
 	            # Add other tests here (sigh) as necessary
	            if [ "$fixBackWhackCtrlMBug" = yes ] ; then
		        rm -f c.tmp 
  	  	        sed -e '/"\\
/d' -e 's/\\
//g' $dir/configure > c.tmp
		        rm -f $dir/configure
		        mv c.tmp $dir/configure
		        chmod a+x $dir/configure
	            fi
                fi
            fi
        if [ ! -x $dir/configure -a "$allowFailure" != yes ] ; then
            # Check for a few allowed exceptions
            if [ "$dir" = "./src/pmi/winmpd" ] ; then
	        continue
            fi
	    if [ -s $dir/Makefile.sm -a ! -s $dir/Makefile.in ] ; then
		# This is an old directory that is no longer processed
		# by simplemake; these are ignored
		continue
	    fi
            echo "Could not build configure from configure.in in $dir"
	    echo "Aborting updatefiles!"
	    exit 1
        fi
        done
    elif [ "$has_unix_find" = no ] ; then
        echo "You need to install find (in findutils)"
        exit 1
    else 
        echo "Skipping creation of configure files"
    fi
fi

if [ "$do_build_configure" = "yes" -o "$do_makefiles" = "yes" ] ; then
    # must come after the above autoreconf-like logic because the above
    # logic will delete the results of this actual autoreconf

    for external in $externals ; do
       if [ -d "$external" -o -L "$external" ] ; then
           echo "running third-party initialization"
           (cd $external && ./autogen.sh) || exit 1
       fi
    done

    for ltdir in $ltdirs ; do
	if [ -d "$ltdir" -o -L "$ltdir" ] ; then
	    echo "running $libtoolize in $ltdir"
	    (cd $ltdir && $libtoolize) || exit 1
	fi
    done

    for amdir in $amdirs ; do
	if [ -d "$amdir" -o -L "$amdir" ] ; then
	    echo "running $autoreconf in $amdir"
	    (cd $amdir && $autoreconf -vif) || exit 1
	fi
    done
fi

if [ -f src/mpe2/maint/updatefiles -a "$do_build_configure" = "yes" ] ; then
    # If we have the mpe2 updatefiles, execute it from the mpe directory
    (cd src/mpe2 && chmod a+x maint/updatefiles && maint/updatefiles )
fi
if [ $rm_prepost = yes ] ; then
    rm -f src/include/mpidpre.h src/include/mpidpost.h
fi
if [ "$do_smpdversion" = yes ] ; then
    echo "Creating src/pm/smpd/smpd_version.h"
    smpdVersion=`cat maint/Version | grep ^MPICH2_VERSION | cut -f2 -d' '`
    cat >src/pm/smpd/smpd_version.h <<EOF
/* -*- Mode: C; c-basic-offset:4 ; -*- */
/*  
 *  (C) 2005 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */
#define SMPD_VERSION "$smpdVersion"
EOF
fi

VERSION=`cat maint/Version | grep ^MPICH2_VERSION | cut -f2 -d' '`
if [ -f README.vin ] ; then
    echo "Updating README's version ID."
    sed -e "s/%VERSION%/${VERSION}/g" README.vin > README
else
    echo "README.vin file not present, unable to update README version number (perhaps we are running in a release tarball source tree?)"
fi

# The following must be the last statements executed
if [ -n "$error_summary" ] ; then
    echo " "
    echo "Problems encountered while running updatefiles."
    echo "These may cause problems when configuring or building MPICH2."
    echo "$error_summary"
fi
case $finalStatus in 
   0) # all is well
	;;
   1) # warnings
 	;;
   2) # reserved for future use
	;;
   3) # fatal, cannot continue
	echo "updatefiles step failed!  Review the output and fix the problem"
        echo "before continuing"
        exit 1
	;;	
   *) # unknown
	echo "Internal error in updatefiles; finalStatus=$finalStatus"
	exit 1
	;;
esac